In April 2025, I had the opportunity to present to a research workshop on Health Services, Policy, and Genomics and its Ethical, Environmental, Economic, Legal and Social Implications. The topic of my presentation was my perspective on the potential power of data (and Generative AI in particular).
If you’re familiar with my post on ChatGPT: The Future, Like It Or Not, this presentation was an extension of that initial exploration into ChatGPT. In the April 2025 presentation, I went further into exploring additional Generative AI models to compare their results on providing a retrospective differential diagnosis for my son Toby’s fibrolamellar carcinoma case. At that time, I argued that had this technology been available 5 years sooner, it might have meaningfully been able to extent Toby’s life.
In this post, I’ve created an iteration of my April 2025 presentation using the latest Generative AI models as of December 2025.
A disclaimer, of sorts.
Since April, and certainly since writing my post regarding my experience of using ChatGPT, Generative AI models have evolved quickly and continue to progress at a rapid pace. Perhaps faster than policy, best practice, and governance can keep up. My goal in writing this post is neither to be an advocate nor opponent for Generative AI, nor to dismiss the challenges of keeping it’s training data relevant. I simply wish to focus on the objective utility that Generative AI offers, while also being realistic about it’s limitations.
I have identical prompts ready to use regarding “patient symptoms”, but I can’t anticipate how each model will respond or how they will request clarification information. Where one model requests more information, I’ll provide that prompt to all models to try to ensure consistency of input provided to each model.
What is Fibrolamellar Carcinoma?
Fibrolamellar carcinoma, or FLC, is a rare cancer of the liver that usually grows in teens and adults under 40 years old. This type of cancer is different than other types of liver cancer because it happens in people who have healthy livers.
FLC is so rare that there is little data on how many people have it. It is thought to make up 1% to 5% of all liver cancers.
It has been estimated that 200 new cases are diagnosed worldwide each year.
https://en.wikipedia.org/wiki/Fibrolamellar_hepatocellular_carcinoma
Or, approximately 1 Canadian every year.
Many people with FLC do not have symptoms when the cancer first starts. Later, when the tumor gets larger, symptoms can include:
- Nausea and vomiting
- Appetite and weight loss
- Malaise (having less energy or just feeling unwell)
- Pain in the abdomen, shoulder, or back
- Jaundice (yellowing of the skin)
Toby was diagnosed at Sick Kids Hospital (Toronto) in October 2020 after his liver failed and he woke up jaundiced one morning.
Toby did have the symptoms listed above, but not at the same time, and not consistently. It appears his immune system would respond and adapt to changes in his body, which is common in children. This made his illness difficult to diagnose.
Adding to this challenge was that we were in the process of finding a new family doctor, after deciding that our last family doctor was not taking our concerns seriously.
“The earlier a cancer is detected, the better your chance of survival.”
https://cancer.ca/en/cancer-information/find-cancer-early/screening-for-cancer/benefits-and-limitations-of-regular-cancer-screening
“Imagine if fewer people suffered and died from cancer because we detected and diagnosed the disease or its precursors at the earliest possible stage.”
National Cancer Institute, Fiscal Year 2025 Professional Judgment Budget Proposal: Leading Progress against Cancer
https://visualsonline.cancer.gov/details.cfm?imageid=13071
What Generative AI is, and what it is not.
Generative AI complements another branch of Artificial Intelligence called Machine Learning. Machine Learning provides a platform for recognizing patterns in data, and making decisions and predictions from it.
Generative AI takes this one step further. Usually using a large dataset, it can produce entirely new content based on input provided and patterns it recognizes within its data. The accuracy of the generated result depends on the quality of the data it draws upon. However, the end result is that Generative AI can “generate statistically probable outputs“.
While Generative AI can produce new, probably correct, and even original content through unique combinations of data, it does not innovate. It cannot truly create beyond the constraints of it’s data model (yet). For this reason, while it can be an effective augmentation tool, it doesn’t replace human creativity, or accountability.
Could Access To Generative AI Have Diagnosed Toby’s Cancer Sooner?
For this experiment, I’ll start with this same prompt and input it into these popular Generative AI tools:
- ChatGPT, Professional Style and Tone
- Google Gemini, Thinking Mode
- xAI Grok, Expert Mode
I’ll then report their responses. If any of the agents replies back with a clarifying question, I’ll provide that clarification to all models for consistency, and then continue providing symptoms. The symptoms follow Toby’s timeline as we were trying to get him a diagnosis, before his liver failed.
Prompt 1: The Primer
“Assume the role of a medical expert and Primary Care Physician. I’m going to give you a patient’s symptoms, one at a time. You will present a possible list of diagnoses in order or most likely to least likely. You will also ask me any clarifying questions to aid in your diagnosis. With each additional symptom I present, you will revise your diagnoses from most likely to least likely, and ask further clarifying questions to aid in your diagnoses.”
| ChatGPT | Google Gemini | xAI Grok |
|---|---|---|
| Understood. I will assume the role of a Primary Care Physician and approach this as a structured clinical differential diagnosis exercise. I will: Maintain a ranked differential diagnosis (most likely → least likely) Revise and reprioritize the differential with each new symptom you provide Explicitly note why diagnoses move up or down Ask targeted clarifying questions after each update to refine likelihoods Flag red-flag features that would warrant urgent evaluation, if they arise Important framing: This will remain educational and analytical, not a definitive diagnosis. I will think in terms of common conditions first, then serious but less common causes, consistent with primary care practice. Age, sex, duration, and progression will materially affect the differential and will be incorporated as soon as they are known. Please provide the first symptom when ready. | I am ready to step into the role of your Primary Care Physician. We will work through this methodically to narrow down the possibilities. Note: While I can provide clinical reasoning and potential diagnoses based on medical literature, I am an AI, not a doctor. This information is for educational purposes and should not replace a professional medical consultation. If you are experiencing a medical emergency, please stop and contact emergency services immediately. Please provide the first symptom you would like me to evaluate. | As your primary care physician, I’m here to help evaluate the patient’s symptoms step by step. To provide an accurate differential diagnosis, I’ll need some basic information first, as we haven’t discussed any symptoms yet. Could you please provide: The patient’s age and gender? Any relevant medical history (e.g., chronic conditions, recent illnesses, medications, allergies)? The first symptom, including details like when it started, how severe it is, and any associated factors (e.g., what makes it better or worse)? Once I have that, I can start building a list of possible diagnoses. |
Prompt 2: Providing Additional Information, and First Symptom (Summer 2019)
Due to a request for additional information from xAI Grok, all the GenAI models were provided with this prompt:
“Patient is an 11-year-old male. No known chronic conditions, recent illnesses, medications, or allergies. Patient is unusually sweaty.”
| ChatGPT | Google Gemini | xAI Grok |
|---|---|---|
| Thank you. I will incorporate the patient’s age and baseline health into the differential. Current Information Age/Sex: 11-year-old male Past medical history: Unremarkable Medications/allergies: None Primary symptom: Unusual sweating (no other symptoms yet described) At this stage, the differential must remain broad. In pediatrics, generalized or excessive sweating (hyperhidrosis or diaphoresis) can range from benign to a marker of systemic disease. Differential Diagnosis (Most Likely → Least Likely) 1. Primary (Idiopathic) Hyperhidrosis Common in children and adolescents Often generalized or affects palms, soles, axillae Typically not associated with systemic illness Can be present even at rest Diagnosis of exclusion 2. Physiologic / Environmental Causes Warm environment, heavy clothing Anxiety, stress, emotional triggers Increased physical activity Often overlooked but very common 3. Endocrine Causes Hyperthyroidism (less common in children, but important) Would expect associated symptoms over time (weight loss, tachycardia, tremor) Hypoglycemia Sweating can occur, especially nocturnally or with fasting 4. Infection (Occult or Early) Tuberculosis (rare but classically causes night sweats) Chronic or subacute infections Would usually progress to include fever, fatigue, weight changes 5. Autonomic Nervous System Dysregulation Dysautonomia (rare in this age group) Often associated with dizziness, palpitations, GI symptoms 6. Hematologic or Oncologic Causes Leukemia or lymphoma Typically associated with night sweats, fatigue, pallor, bruising, weight loss Less likely with sweating alone, but must be considered if additional red flags appear 7. Cardiopulmonary Causes Congenital or acquired heart conditions Would expect exercise intolerance, shortness of breath, cyanosis Clarifying Questions (Very Important at This Stage) Please answer as many as you can: Sweating Characteristics Is the sweating generalized or localized (palms, feet, armpits, face)? Does it occur during sleep (night sweats)? Is the sweating constant or episodic? How long has this been occurring? Associated Symptoms Any fever, even low-grade? Weight loss, poor appetite, or fatigue? Palpitations, tremor, heat intolerance? Shortness of breath or exercise intolerance? Nausea, vomiting, or abdominal pain? Headaches or dizziness? Context Any recent travel, sick contacts, or exposures? Any changes in school performance or behavior? Is the sweating new or clearly worse than peers? Red Flags to Watch For (Do Not Answer Yet—Just Awareness) Night sweats soaking sheets Unexplained weight loss Persistent fever Pallor or bruising Bone pain or lymph node swelling Please provide the next symptom or detail, and I will immediately update and re-rank the differential. | Hello. I understand your concern. Hyperhidrosis (excessive sweating) in an 11-year-old can be attributed to several factors ranging from normal developmental changes to underlying metabolic shifts. Given the patient’s age and the single symptom of unusual sweating, here is the initial differential diagnosis list, ranked from most to least likely: Differential Diagnosis Primary Focal Hyperhidrosis: This is the most common cause of excessive sweating in children and adolescents. It typically affects specific areas (palms, soles, or underarms) and is often related to overactive sweat glands rather than an underlying disease. Early Puberty (Adrenarche): At 11, the body begins increasing production of adrenal androgens. This can cause “adult-pattern” sweating and body odor before other physical signs of puberty are obvious. Environmental/Idiopathic Factors: This includes over-dressing, high activity levels, or a naturally higher “set point” for thermoregulation in a healthy child. Hyperthyroidism: An overactive thyroid can speed up the metabolism, leading to heat intolerance and increased sweating. Type 1 Diabetes Mellitus: While less common to present solely with sweating, fluctuations in blood sugar (specifically hypoglycemia) or early metabolic changes can manifest as diaphoresis (profuse sweating). Clarifying Questions To help narrow this down, I need a bit more detail: Localization: Is the sweating generalized (all over the body) or focal (just the palms, feet, or armpits)? Timing: Does the sweating occur primarily at night (night sweats), or is it constant throughout the day? Triggers: Does it seem linked to stress, anxiety, or physical activity, or does it happen even when he is resting in a cool room? Associated Symptoms: Have you noticed any recent weight changes, increased thirst, increased urination, or behavioral irritability? What is the next symptom or detail you would like to add? | Differential Diagnosis Based on the initial information provided—an 11-year-old male with no known medical history presenting with unusual sweating (hyperhidrosis)—here is a ranked list of possible diagnoses from most likely to least likely. This is a preliminary assessment, as excessive sweating can be benign or indicative of underlying issues, and further details are needed for refinement. Primary focal hyperhidrosis: A common condition where sweating is excessive in specific areas (e.g., palms, soles, underarms) without an underlying cause. It often starts around puberty and can be triggered by stress or heat; family history is common. Physiologic sweating due to environmental factors or activity: Normal response to heat, exercise, anxiety, or puberty-related hormonal changes, which can make sweating seem unusual if it’s a new pattern. Anxiety or emotional stress: Psychological factors can cause generalized or focal sweating, especially in children facing school or social pressures. Infection (e.g., viral illness like a mild upper respiratory infection): Could cause low-grade fever and sweating, even if not yet symptomatic otherwise. Hyperthyroidism: Overactive thyroid leading to increased metabolism and sweating; less common in children but possible. Neurologic conditions (e.g., autonomic dysfunction): Rare, but issues like sympathetic overactivity could cause excessive sweating. Metabolic disorders (e.g., diabetes or hypoglycemia): Uncommon without other symptoms, but can present with sweating episodes. Malignancy (e.g., lymphoma): Very rare in children, but night sweats can be a sign; usually accompanied by other systemic symptoms. Clarifying Questions To narrow this down, could you please provide more details on: Where on the body is the sweating occurring (e.g., generalized, palms/soles, underarms, face)? When did it start, and how long has it been going on? Is it constant, episodic, or related to specific triggers like heat, exercise, stress, or nighttime? How severe is it (e.g., damp clothing, dripping sweat, interfering with daily activities)? Any other associated symptoms (e.g., fever, weight changes, fatigue, heart palpitations, changes in appetite or thirst)? Family history of similar issues or any endocrine disorders? Recent exposures (e.g., travel, new environments, diet changes)? |
Prompt 3: Providing Additional Information, and Next Symptom (February 2020)
Due to a request for additional information, all the Generative AI models were provided with this prompt:
“The sweating appears to be generalized. Sweating occurs at night. Sweating is episodic. Unclear how long sweating has been occurring. Patient experiences occasional low-grade fever. No known family history endocrine disorders. Patient is experiencing nausea at night.”
| ChatGPT | Google Gemini | xAI Grok |
|---|---|---|
| Thank you. These additional features materially change the risk profile and the differential. I will explicitly re-rank diagnoses based on generalized, episodic night sweats + low-grade fever + nocturnal nausea in an 11-year-old male. Updated Key Clinical Features Generalized sweating Occurs at night Episodic Occasional low-grade fever Nocturnal nausea No known endocrine family history These findings move us away from benign primary hyperhidrosis and toward systemic causes. Revised Differential Diagnosis (Most Likely → Least Likely) 1. Chronic or Subacute Infection ↑ Significantly increased likelihood Examples: Tuberculosis (TB) – classic triad includes night sweats, low-grade fever, nausea, fatigue Occult bacterial infection (e.g., endocarditis—rare but serious) Viral infections (EBV, CMV) in subacute phase Rationale: Night sweats + low-grade fever are red-flag features Nausea may accompany cytokine-mediated illness Episodic nature fits inflammatory surges 2. Hematologic Malignancy (Leukemia or Lymphoma) ↑ Increased concern Rationale: Night sweats and fever are B symptoms Nausea may reflect systemic illness May initially present subtly in children Sweating can precede other obvious signs At this stage, cannot be ruled out and must remain high on the list until further symptoms are assessed. 3. Endocrine Disorder Moderate likelihood Hyperthyroidism Can cause heat intolerance, sweating, nausea, low-grade fever Less common in boys but possible Adrenal disorders (rare) Rationale: Episodic symptoms possible Absence of family history does not exclude 4. Gastroesophageal or GI-Related Causes with Autonomic Activation Moderate–low likelihood Nocturnal nausea triggering sympathetic response Reflux or gastritis could provoke sweating Would not typically explain fever 5. Autonomic Dysfunction / Dysregulation Lower likelihood Episodic sweating and nausea could be autonomic Fever argues against this as a primary cause 6. Primary Hyperhidrosis ↓ Now unlikely Presence of fever and nausea makes benign hyperhidrosis less likely Night sweats are atypical for idiopathic hyperhidrosis Red Flags Now Present Night sweats Low-grade fever Systemic symptoms (nausea) These justify further diagnostic escalation in real-world practice. High-Priority Clarifying Questions Please answer carefully: Constitutional / Oncologic Any unintentional weight loss? Is the patient fatigued or less active than usual? Any bone pain, especially at night? Any easy bruising or bleeding? Any swollen lymph nodes (neck, armpits, groin)? Infectious Any chronic cough, shortness of breath, or chest pain? Any recent travel, TB exposure, or high-risk contacts? Any night sweats severe enough to soak bedding? GI / Hepatic Any abdominal pain, especially upper abdomen? Any changes in stool color or urine? Any vomiting or reflux symptoms? Endocrine Any heat intolerance, tremor, or palpitations? Any changes in appetite? Next Step Please provide the next symptom or finding. Each additional detail will significantly narrow the differential and determine whether this leans more strongly toward infectious, oncologic, endocrine, or GI pathology. | The addition of nocturnal nausea and occasional low-grade fever to generalized night sweats significantly changes the clinical picture. In an 11-year-old, this “cluster” of symptoms is more concerning than isolated sweating and requires a thorough evaluation to rule out more serious underlying conditions. The presence of night sweats and fever often points toward a systemic inflammatory, infectious, or neoplastic (cancerous) process. Here is your revised differential diagnosis: Revised Differential Diagnosis Infectious Process (Chronic or Recurrent): This is statistically the most likely cause. It could range from a lingering viral infection like Epstein-Barr Virus (EBV/Mononucleosis) to more chronic bacterial infections such as Tuberculosis (TB) or Brucellosis, especially if there have been specific exposures. Lymphoma (Hodgkin or Non-Hodgkin): In pediatrics, the combination of night sweats and fever (known as “B symptoms”) must be taken seriously. Lymphoma can also cause nausea if there is abdominal involvement or if the body is in a high metabolic state. Gastroesophageal Reflux Disease (GERD): While it doesn’t typically cause fever, GERD is a very common cause of nocturnal nausea and sweating in children as the body reacts to the stress of acid reflux during sleep. The “fever” might be a separate, coincidental finding or a slight elevation in body temperature from the physical stress of reflux. Autoimmune or Autoinflammatory Disorders: Conditions like Systemic Juvenile Idiopathic Arthritis or Periodic Fever Syndromes can cause episodic fevers and sweats. These often present with other symptoms like joint pain or rashes, but can start vaguely. Endocrine/Metabolic Issues: Although you mentioned no family history, we must still consider Hyperthyroidism or Type 1 Diabetes. Nocturnal hypoglycemia (low blood sugar) in early diabetes can cause profound night sweats and nausea. Clarifying Questions To help me differentiate between a lingering infection and something more systemic like lymphoma, I need to know: Weight Loss: Has the patient lost any weight recently without trying, or have his clothes started fitting more loosely? Lumps or Bumps: Have you noticed any swollen “glands” or firm, painless lumps in his neck, armpits, or groin? Abdominal Symptoms: Does he complain of a “full” feeling in his stomach quickly after eating, or any specific belly pain? Fatigue: Is he unusually tired during the day or struggling to keep up with his normal activities? Itching: Has he complained of any persistent itching (pruritus) without a visible rash? Exposures: Has he recently traveled abroad, been around anyone with a chronic cough, or consumed unpasteurized dairy products? Which of these symptoms or details can you provide next? | Differential Diagnosis With the additional details—generalized, episodic night sweating accompanied by occasional low-grade fever and nighttime nausea in an 11-year-old male with no known medical history—the presentation suggests a systemic process rather than localized or benign hyperhidrosis. This shifts the focus toward infectious, inflammatory, or neoplastic causes. Here’s the revised ranked list from most likely to least likely: Infectious causes (e.g., viral infection like Epstein-Barr virus/mononucleosis, or bacterial like tuberculosis or brucellosis): Common in children; night sweats, low-grade fever, and nausea can occur with systemic infections, especially if there’s an ongoing or resolving illness. Malignancy (e.g., lymphoma or leukemia): Night sweats are a classic B symptom; combined with fever and nausea, this warrants consideration, though rare in children without other signs like lymphadenopathy or weight loss. Gastrointestinal issues (e.g., gastroesophageal reflux disease or viral gastroenteritis): Could explain nighttime nausea with associated sweating and mild fever if there’s an inflammatory component. Hyperthyroidism: Can cause generalized sweating, heat intolerance leading to night episodes, and nausea; fever is less typical but possible. Autoimmune or inflammatory disorders (e.g., juvenile idiopathic arthritis or inflammatory bowel disease): May present with episodic fever, sweats, and GI symptoms like nausea. Endocrine disorders (e.g., pheochromocytoma): Rare, but can cause episodic sweating, nausea, and autonomic symptoms; no family history reduces likelihood. Neurologic or autonomic dysfunction: Less common, but conditions like dysautonomia could lead to episodic sweating and nausea. Metabolic issues (e.g., hypoglycemia): Episodic night symptoms possible, but fever is atypical. Clarifying Questions To refine this further and potentially rule out serious causes, could you provide more details on: A more precise timeline: When did the symptoms (sweating, fever, nausea) first start? How frequent are the episodes (e.g., nightly, weekly)? Severity and patterns: What is the typical fever range (e.g., 99-100°F)? Does the nausea lead to vomiting, or is it just queasiness? Any relation to meals, position (e.g., lying down), or other triggers? Additional symptoms: Any weight loss, fatigue, cough, sore throat, swollen lymph nodes, abdominal pain, diarrhea, rash, joint pain, headaches, or changes in urination/thirst? Recent history: Any travel, exposure to sick contacts, animal contacts, or changes in diet/environment? Has the patient had any recent vaccinations or tests? Vital signs or measurements: If available, current weight/height, recent temperature readings, or heart rate during episodes? |
Reflection on Prompt 3
At this point, all 3 Generative AI models are pointing to a higher likelihood of a malignancy, though it’s not clear at this point what kind. I recall quite clearly that when we took Toby to the hospital at this point, his lab work came back clear, though his urine was a little dark.
Prompt 4: Providing Additional Information, and Next Symptom (Spring/Summer 2020)
Due to a request for additional information, all the GenAI models were provided with this prompt:
“Patient has become more sensitive to abdominal pain. Patient is losing weight, has less energy, and has diminished appetite.”
| ChatGPT | Google Gemini | xAI Grok |
|---|---|---|
| These new symptoms substantially narrow the differential and increase concern for serious systemic disease. I will explicitly re-prioritize and explain why. Updated Key Clinical Features 11-year-old male Generalized, episodic night sweats Low-grade fevers Nocturnal nausea Abdominal pain sensitivity Unintentional weight loss Fatigue / low energy Diminished appetite This constellation represents constitutional (“B”) symptoms plus GI involvement. Benign explanations are now very unlikely. Revised Differential Diagnosis (Most Likely → Least Likely) 1. Hematologic Malignancy (Leukemia or Lymphoma) ↑ Now the leading concern Strong supporting features: Night sweats Persistent low-grade fever Weight loss Fatigue Anorexia Abdominal pain (can reflect hepato-splenomegaly or lymphadenopathy) Nausea In children: Acute leukemia often presents with vague systemic symptoms before lab abnormalities are obvious Lymphoma (especially Hodgkin or abdominal non-Hodgkin) commonly presents with night sweats and weight loss This diagnosis must be actively ruled out. 2. Chronic Infection Still highly concerning Most notably: Tuberculosis Occult intra-abdominal infection EBV / CMV (less likely now due to progressive weight loss) Rationale: Night sweats + fever + weight loss are classic Abdominal pain may reflect lymph node involvement, liver/spleen enlargement, or GI involvement 3. Inflammatory or Autoimmune Disease Moderate likelihood Examples: Inflammatory bowel disease (Crohn’s disease) Weight loss Abdominal pain Fatigue Low-grade fevers Night symptoms However: Sweating is not a dominant early feature Would expect diarrhea, blood in stool, or growth delay (still worth assessing) 4. Endocrine / Metabolic Disorder ↓ Now less likely Hyperthyroidism can cause weight loss and sweating, but: Abdominal pain is less typical Fever and progressive fatigue make this less likely as a unifying diagnosis 5. Chronic GI or Hepatobiliary Disease Lower but rising relevance Liver disease or biliary obstruction can cause: Weight loss Abdominal pain Nausea Would expect jaundice, pale stools, dark urine (not yet reported) 6. Functional or Psychogenic Causes Now very unlikely Objective constitutional symptoms argue strongly against this Red Flags Present (Multiple) Unintentional weight loss Night sweats Persistent fever Fatigue Abdominal pain Appetite loss 👉 In real clinical practice, this constellation warrants urgent evaluation. High-Yield Clarifying Questions (Critical) Please answer these carefully: Hematologic / Oncologic Any easy bruising, nosebleeds, or gum bleeding? Any bone or joint pain, especially at night? Any swollen lymph nodes (neck, armpits, groin)? Does the abdomen appear distended or firm? GI / Hepatic Any diarrhea, constipation, or blood/mucus in stool? Any pale (clay-colored) stools? Any dark urine? Any yellowing of eyes or skin? Infectious Any chronic cough, chest pain, or shortness of breath? Any known TB exposure or high-risk travel? Pattern Is the abdominal pain localized (right upper, left upper, generalized)? Is pain worse at night or after eating? Clinical Direction (Transparency) Based on current data, the working priorities are: Rule out leukemia/lymphoma Rule out chronic infection (especially TB) Evaluate inflammatory bowel disease Please provide the next symptom, physical finding, or test result, and I will continue refining the differential with precision. | The addition of unintentional weight loss, diminished appetite, and abdominal pain significantly increases the clinical urgency. In a pediatric patient, the combination of “B symptoms” (night sweats, fever, weight loss) and localized abdominal discomfort requires a focused investigation into systemic inflammatory or neoplastic (cancerous) processes. Here is the revised differential diagnosis, ranked by clinical priority: Revised Differential Diagnosis Lymphoma (Hodgkin or Non-Hodgkin): This remains a primary concern. The abdominal pain could indicate splenomegaly (enlarged spleen), hepatomegaly (enlarged liver), or enlarged lymph nodes in the abdomen (mesenteric lymphadenopathy) pressing on other organs. Inflammatory Bowel Disease (IBD), specifically Crohn’s Disease: Crohn’s frequently presents in early adolescence with abdominal pain, weight loss, fatigue, and low-grade fevers. Unlike Ulcerative Colitis, Crohn’s can be “silent” regarding gross blood in the stool initially, focusing more on systemic inflammation and malabsorption. Abdominal Tuberculosis (TB) or Chronic Infection: While less common in some regions, extrapulmonary TB can settle in the gastrointestinal tract or abdominal lymph nodes, causing night sweats, weight loss, and pain. Other possibilities include a chronic intra-abdominal abscess. Celiac Disease: Severe malabsorption from gluten intolerance can lead to weight loss, fatigue, and abdominal pain. While less likely to cause true “night sweats,” the systemic toll on an 11-year-old’s body can be profound. Type 1 Diabetes Mellitus: The weight loss and fatigue fit, though the abdominal pain and night sweats are usually secondary to metabolic crisis (ketoacidosis) or fluctuating blood sugars. Clarifying Questions To help differentiate between an intestinal issue (like Crohn’s) and a lymphatic issue (like Lymphoma), I need the following details: Bowel Habits: Have there been any changes in stool consistency (diarrhea or constipation), or have you noticed any blood or mucus in the stool? Pain Characteristics: Is the abdominal pain constant or crampy? Does it worsen after eating? Can the patient point to one specific spot (e.g., the lower right side), or is it everywhere? Physical Findings: If you gently press on his stomach, does he have “rebound” pain (pain when you let go)? Do you feel any hard masses or fullness in the belly? Growth: Has his height growth slowed down or plateaued alongside the weight loss? Mouth Sores: Does he have any recurrent painful sores or ulcers inside his mouth? What information can you provide regarding his bowel habits or the specific nature of his pain? | Differential Diagnosis The addition of increased abdominal pain (sensitivity/tenderness), unexplained weight loss, fatigue, and diminished appetite to the prior symptoms (generalized episodic night sweats, occasional low-grade fever, nighttime nausea) significantly raises concern for a systemic illness. This constellation—particularly the combination of fever, night sweats, and weight loss (known as “B symptoms”) along with gastrointestinal involvement—is highly suggestive of malignancy or chronic infection in children. Benign causes are now much less likely. cancer.org +1Here is the revised ranked list from most likely to least likely: Lymphoma (Hodgkin or non-Hodgkin): Classic presentation in children includes B symptoms (fever, drenching night sweats, unexplained weight loss >10%), fatigue, diminished appetite, and nausea. Abdominal pain can occur from lymph node enlargement or organ involvement in the abdomen. This is a leading concern given the symptom cluster. cancer.org +1 Leukemia (acute lymphoblastic or other): Systemic symptoms like fever, night sweats, weight loss, fatigue, anorexia, and abdominal pain (from hepatosplenomegaly or infiltration) are common. Less focal lymphadenopathy may be present compared to lymphoma. Tuberculosis (pulmonary or extrapulmonary/abdominal): Frequently mimics lymphoma with night sweats, low-grade fever, weight loss, fatigue, and anorexia. Abdominal TB can cause pain, nausea, and GI symptoms. Differentiation often requires testing (e.g., imaging, TST/IGRA, biopsy). pmc.ncbi.nlm.nih.gov Inflammatory bowel disease (e.g., Crohn’s disease): Can present with abdominal pain, weight loss, fatigue, diminished appetite, nausea, and occasionally fever or night sweats from systemic inflammation. Night sweats are reported in some pediatric cases but are less prominent than in malignancy or TB. childrenscolorado.org Other chronic infections (e.g., brucellosis, disseminated fungal, or HIV-related): Possible with similar constitutional symptoms, but less common without specific exposures. Autoimmune/inflammatory disorders (e.g., systemic lupus erythematosus or juvenile idiopathic arthritis): Can cause fever, fatigue, weight loss, and abdominal pain, but night sweats and anorexia are less typical. Other malignancies (e.g., neuroblastoma or Wilms tumor): Less likely without more specific signs, but abdominal involvement could explain pain. This is now a red-flag presentation requiring urgent medical evaluation (e.g., pediatrician, ER, or specialist referral) for exam, labs (CBC, inflammatory markers, LDH, blood cultures), imaging (chest X-ray, abdominal ultrasound/CT), and possible TB testing or biopsy. Delaying could miss a treatable but serious condition. Clarifying Questions To prioritize and guide next steps, please provide details on: Abdominal pain: exact location (e.g., upper/lower abdomen, right/left side, diffuse), quality (cramping, sharp, burning), severity (mild/moderate/severe), timing (constant, post-meal, at night), any relieving/aggravating factors, or associated bloating/distention? Gastrointestinal: Any vomiting (how often, contents—bilious, bloody?), diarrhea, constipation, blood/mucus in stool, or changes in bowel habits? Lymph nodes: Any noticeable swelling in neck, armpits, groin, or elsewhere? Painful or painless? Bleeding/bruising: Easy bruising, petechiae (small red spots on skin), bleeding gums, nosebleeds, or blood in urine? Other systemic: Bone/joint pain, headaches, rashes, mouth sores, cough, shortness of breath, or chest pain? Exposures/history: Recent travel, contact with TB cases, animal exposure (e.g., unpasteurized dairy for brucellosis), sick contacts, or immune-compromising factors? Measurements: Approximate weight loss (pounds/kilograms and over what timeframe)? Recent temperatures? Any palpable abdominal masses or enlarged liver/spleen noted by parent/guardian? Other: Any recent infections, vaccinations, or changes in school performance/behavior? |
Prompt 5: Next Symptom (August 2020)
“Patient is thin, pale, and has pale bowel movements. Urine appears darker than normal.”
| ChatGPT | Google Gemini | xAI Grok |
|---|---|---|
| These new findings are highly significant and sharply refocus the differential toward hepatobiliary and malignant processes. I will re-rank accordingly and be very explicit about the implications. Updated Key Clinical Features (Cumulative) 11-year-old male Thin, pale appearance Unintentional weight loss Fatigue / low energy Poor appetite Generalized episodic night sweats Low-grade fevers Nocturnal nausea Abdominal pain Pale (acholic) stools Dark urine 👉 Pale stools + dark urine = impaired bile flow or bilirubin metabolism until proven otherwise This is no longer a vague systemic picture. This is now a cholestatic pattern. Revised Differential Diagnosis (Most Likely → Least Likely) 1. Hepatobiliary Obstruction (Malignant or Infiltrative) ↑ Now the leading concern Mechanism: Pale stools → lack of bile pigments reaching the intestine Dark urine → conjugated bilirubin excreted renally Weight loss, night sweats, fever → systemic disease Most concerning causes in a child: Lymphoma with hepatic or porta hepatis involvement Leukemic infiltration of the liver Abdominal malignancy compressing bile ducts This unifies all symptoms exceptionally well. 2. Primary Liver Disease High likelihood Examples: Hepatitis (autoimmune, viral, or infiltrative) Cholestatic liver disease Sclerosing cholangitis (less common in this age but possible) Would explain: Pale stools Dark urine Fatigue Weight loss Abdominal pain Nausea However: Night sweats and fevers still raise concern for malignancy or infection rather than isolated liver disease. 3. Hematologic Malignancy (Leukemia or Lymphoma) Still extremely concerning, now with organ involvement Lymphoma can obstruct bile ducts via lymphadenopathy Hepatosplenomegaly can cause abdominal pain Pallor may reflect anemia Constitutional “B symptoms” strongly support this At this point, this is no longer theoretical. 4. Chronic Infection with Hepatic Involvement Moderate likelihood Tuberculosis (hepatic TB is rare but real) Other granulomatous infections Would explain: Night sweats Weight loss Fever Liver dysfunction 5. Gallbladder / Biliary Tract Disease Lower likelihood Gallstones are uncommon in this age unless hemolytic disease exists Would usually cause episodic RUQ pain Would not fully explain systemic symptoms unless complicated 6. Inflammatory Bowel Disease with Hepatobiliary Complications Low but possible Primary sclerosing cholangitis can coexist with IBD Would expect bowel symptoms earlier Red Flags Now Clearly Present Cholestasis (pale stools, dark urine) Constitutional symptoms Weight loss Pallor Night sweats Fever 👉 In real-world care, this constellation warrants urgent same-day hospital evaluation. Critical Clarifying Questions (High Yield) Please answer carefully: Hepatic / Biliary Any yellowing of the eyes or skin (even subtle)? Is the abdominal pain right upper quadrant or generalized? Is the abdomen enlarged or firm? Any itching (pruritus)? Hematologic / Oncologic Any easy bruising or bleeding? Any bone pain? Any noticeable lymph node swelling? Stool / Urine Pattern Are stools persistently pale or intermittent? Is urine tea-colored or cola-colored? Clinical Direction (Transparency) Based on all data so far, the leading diagnostic priorities are now: Malignancy with hepatic/biliary involvement (especially lymphoma) Primary liver disease causing cholestasis Chronic infection affecting the liver This scenario would typically prompt: Immediate labs (CBC, CMP, bilirubin fractions, LFTs) Abdominal ultrasound or CT Urgent pediatric specialist involvement Please provide the next symptom, physical finding, or test result (or answer the questions above), and I will continue refining the diagnosis precisely. | The combination of pale (acholic) stools and dark urine is a clinical “red flag” known as obstructive jaundice. This suggests that bile (which gives stool its brown color) is being blocked from entering the intestines and is instead backing up into the bloodstream and being excreted by the kidneys. When paired with night sweats, fever, weight loss, and abdominal pain, we must look closely at the liver, gallbladder, and particularly the area where the bile duct meets the small intestine. Revised Differential Diagnosis Lymphoma (Extranodal/Abdominal): This is now the highest concern. A mass of enlarged lymph nodes in the porta hepatis (the “gateway” to the liver) could be compressing the bile duct, causing jaundice, while also explaining the systemic “B symptoms” (fever, night sweats, weight loss). Choledochal Cyst or Biliary Obstruction: A congenital abnormality of the bile duct (choledochal cyst) can sometimes become symptomatic in late childhood, leading to obstruction, pain, and jaundice. If the cyst becomes infected (cholangitis), it would cause the fevers you’re seeing. Autoimmune Hepatobiliary Disease: Conditions like Primary Sclerosing Cholangitis (PSC) or Autoimmune Hepatitis can cause chronic liver inflammation. PSC is often associated with inflammatory bowel disease, which would also explain the abdominal pain and weight loss. Hepatoblastoma or Liver Malignancy: Although rarer in an 11-year-old than in younger children, a primary liver tumor could cause both the systemic symptoms and the biliary obstruction. Infectious Hepatitis or Liver Abscess: A severe viral infection or a localized pocket of infection in the liver could cause these symptoms, though the prolonged weight loss and night sweats usually point toward a more chronic process. Clarifying Questions Because these symptoms suggest a potentially serious blockage or systemic illness, please check the following: Scleral Icterus: If you look at the whites of his eyes, do they appear yellow? Pruritus (Itching): Is he complaining of intense itching, especially on his hands or feet? (Bile salts backing up into the skin cause significant itching). Pain Location: Is the abdominal pain specifically located in the Upper Right Quadrant (under the right ribs)? Recent History: Has he had any recent contact with anyone who had yellow skin or “stomach flu,” or has he eaten any raw/underfiltered shellfish or traveled? Physical Exam: If you gently palpate the upper right side of his abdomen, do you feel any firm mass or does it cause him significant sharp pain? Given these new symptoms (pale stools and dark urine), this patient needs to be seen by a physician urgently for blood work (Liver Function Tests, Bilirubin, CBC) and likely an abdominal ultrasound. Would you like me to explain what those specific tests look for? | Differential Diagnosis The new symptoms—thin appearance (likely from ongoing weight loss), pallor, pale (acholic/clay-colored) bowel movements, and dark urine—strongly indicate conjugated hyperbilirubinemia with biliary obstruction or severe liver dysfunction. Pale stools occur when bile (containing bilirubin) fails to reach the intestines, while dark urine results from excess conjugated bilirubin spilling into the urine. Combined with the prior symptoms (abdominal pain, weight loss, fatigue, diminished appetite, low-grade fever, night sweats, nighttime nausea), this is a highly concerning pattern in an 11-year-old. It points toward a serious underlying process affecting the liver, biliary tree, or causing extrinsic compression/obstruction.This presentation is now an emergency requiring immediate medical attention (urgent pediatrician/ER visit, preferably with pediatric gastroenterology/hepatology input). Delaying risks progression of liver damage or missing a malignancy.Revised ranked list from most likely to least likely: Abdominal malignancy causing biliary obstruction (e.g., lymphoma with porta hepatis/retroperitoneal lymphadenopathy, or primary liver tumor such as hepatoblastoma): Lymphoma remains high due to B symptoms (fever, night sweats, weight loss) plus now clear evidence of obstructive jaundice from lymph node compression of bile ducts. Hepatoblastoma is the most common liver malignancy in children this age and can present with abdominal pain, weight loss, anorexia, fatigue, and obstructive features (pale stools, dark urine). Pallor may reflect anemia of chronic disease or bone marrow involvement. Leukemia (acute lymphoblastic leukemia with hepatic infiltration or extramedullary involvement): Can cause liver enlargement, biliary obstruction, anemia (pallor), fatigue, weight loss, fever, and night sweats. Abdominal pain and GI symptoms are common. Infectious causes with hepatic involvement (e.g., disseminated tuberculosis, chronic viral hepatitis with cirrhosis/fibrosis, or bacterial abscess): TB can mimic malignancy with constitutional symptoms and abdominal involvement leading to obstruction. Hepatitis B/C or other viruses could cause liver dysfunction, but pale stools are more typical of obstruction than parenchymal disease alone. Autoimmune or inflammatory liver disease (e.g., autoimmune hepatitis, primary sclerosing cholangitis): Can present with fatigue, anorexia, abdominal pain, fever, and progressive jaundice/obstruction. PSC is often associated with inflammatory bowel disease, which could explain pain/nausea/weight loss. Other obstructive causes (e.g., choledochal cyst, biliary stricture, or pancreatic mass—rare in children): Less likely without a history of prior episodes or congenital issues, but possible. Metabolic/genetic disorders (e.g., Wilson’s disease, alpha-1 antitrypsin deficiency): Can cause liver failure with jaundice, but usually present differently (e.g., neurologic signs in Wilson’s) and less acutely with fever/sweats. Inflammatory bowel disease with hepatobiliary complications (e.g., Crohn’s with sclerosing cholangitis): Possible but less likely as primary driver of obstructive jaundice. This constellation (B symptoms + obstructive jaundice + pallor) has a high pretest probability for malignancy in pediatrics—urgent imaging (abdominal ultrasound with Doppler, then CT/MRI if needed), labs (CBC, liver function tests including total/direct bilirubin, ALT/AST, alkaline phosphatase, GGT, INR, LDH, inflammatory markers), and possibly tumor markers (AFP for hepatoblastoma) are indicated. Clarifying Questions To help prioritize and guide urgent evaluation: Is there any yellowing of the skin (jaundice), whites of the eyes (scleral icterus), or itching (pruritus, often from bile salts)? Stool details: Exactly how pale are they (clay/gray/white, or just lighter than usual)? Any greasy/floating stools (suggesting fat malabsorption)? Urine details: How dark (tea/coca-cola colored)? Any blood or foam? Abdominal exam observations: Any visible distention, palpable masses, enlarged liver/spleen (hepatosplenomegaly), or increased tenderness in upper abdomen (right upper quadrant)? Severity/timeline: How much weight has been lost and over what period? How pronounced is the pallor (e.g., compared to baseline photos)? Any recent bruising, bleeding gums, or petechiae? Other symptoms: Any vomiting (color/contents), diarrhea/constipation, joint pains, rashes, mouth ulcers, cough, or shortness of breath? History: Any recent infections, travel, medications/supplements, family history of liver disease/cancer/autoimmune conditions, or exposure to toxins (e.g., mushrooms, certain herbs)? Vital signs if measured: Recent temperature, heart rate, blood pressure, or weight trends? Please seek medical care promptly—ideally today—with these symptoms described. I can help interpret any lab/imaging results you obtain. |
Reflection on Prompt 5
The Generative AI models are now consistently recommending prompt medical care. While not specifically naming FLC, they are indicating a high likelihood of a malignancy of the liver or hepatobiliary process (includes the liver) 2 months before Toby’s liver failed.
I don’t have answers to any of the clarifying questions asked by the GenAI models, so I’ll continue with the next symptom.
Prompt 6: Next Symptom (August/September 2020)
“Patient is experiencing severe back pain.”
| ChatGPT | Google Gemini | xAI Grok |
|---|---|---|
| This new symptom is critical and significantly escalates concern. Severe back pain in this context is not benign and strongly shifts the differential toward malignant or infiltrative disease involving bone, marrow, or retroperitoneal structures. I will re-rank and explain explicitly. Updated Key Clinical Features (Cumulative) 11-year-old male Thin, pale Unintentional weight loss Fatigue, anorexia Generalized episodic night sweats Low-grade fevers Nocturnal nausea Abdominal pain Pale (acholic) stools Dark urine Severe back pain This is now a high-risk systemic picture. Revised Differential Diagnosis (Most Likely → Least Likely) 1. Malignancy — VERY HIGH CONCERN Now the dominant working diagnosis Most likely entities: a) Lymphoma (especially non-Hodgkin or advanced Hodgkin) Night sweats, fever, weight loss (B symptoms) Abdominal pain (lymphadenopathy, organ involvement) Biliary obstruction via porta hepatis nodes → pale stools, dark urine Back pain from: Retroperitoneal lymphadenopathy Vertebral involvement Paraspinal mass effect b) Leukemia Pallor (anemia) Fatigue, weight loss Bone and back pain (marrow expansion) Hepatic infiltration → cholestasis Night sweats, fever At this point, malignancy must be assumed until ruled out. 2. Metastatic or Primary Bone / Marrow Infiltrative Disease High likelihood Severe back pain is classic for marrow involvement Could be secondary to leukemia/lymphoma Pain often worse at night, persistent, not activity-related 3. Severe Hepatobiliary Disease with Referred or Structural Pain Moderate likelihood Liver enlargement can cause back or flank pain However, this alone does not explain severity of pain or B symptoms as well as malignancy does 4. Spinal or Paraspinal Infection (e.g., Osteomyelitis, Discitis, TB) Lower but serious Back pain + fever + weight loss TB could unify systemic symptoms and hepatic involvement Less likely than malignancy but still dangerous 5. Gallbladder or Pancreatic Disease Low likelihood Could cause back pain Does not adequately explain night sweats, pallor, or systemic decline Red Flags Now Severe and Multiple Severe back pain Cholestasis B symptoms Weight loss Pallor Systemic decline 👉 In real clinical practice, this constellation requires immediate emergency evaluation and hospital admission. Extremely Important Clarifying Questions (Please Answer) Back Pain Characterization Is the back pain constant or intermittent? Is it worse at night? Is it localized (upper, mid, lower back)? Any difficulty walking, weakness, numbness, or bowel/bladder changes? Neurologic (Urgent) Any leg weakness? Any tingling or numbness? Any loss of bladder or bowel control? Oncologic Any bone pain elsewhere? Any new bruising or bleeding? Hepatic Any yellowing of eyes/skin? Any itching? Clinical Direction (Very Clear) Given the cumulative presentation, the top priorities are: Leukemia or lymphoma with hepatic and spinal involvement Spinal or marrow infiltrative disease Severe systemic infection (e.g., TB) This scenario would typically prompt emergent imaging (MRI/CT) and urgent labs. Please provide: Answers to the neurologic/back pain questions or The next symptom, exam finding, or test result I will continue refining the differential precisely. | The addition of severe back pain to a clinical picture of obstructive jaundice (pale stools/dark urine), “B symptoms” (night sweats, fever, weight loss), and abdominal pain is an extremely significant and urgent clinical finding. In an 11-year-old, severe back pain combined with these systemic symptoms often indicates a retroperitoneal process—meaning something is growing or pressing on the area behind the abdominal organs, near the spine. This can involve enlarged lymph nodes or a mass that is both compressing the bile duct (causing the jaundice) and pressing on the spinal nerves or vertebrae. Revised Differential Diagnosis Lymphoma (Non-Hodgkin or Hodgkin): This is the leading concern. Large masses of lymph nodes in the retroperitoneum (the area behind the gut) can cause deep, boring back pain and compress the biliary tree. This explains every symptom listed: the sweats, fever, weight loss, jaundice, and the new back pain. Neuroblastoma: While more common in younger children, it can occur in older children. These tumors often arise from the adrenal glands or the sympathetic nerve chain along the spine, leading to significant back pain and abdominal masses that can obstruct bile flow. Pancreatic Pathology (e.g., Pancreatoblastoma or Pancreatitis): A mass in the head of the pancreas can block the bile duct (pale stools) and cause pain that radiates straight through to the back. Metastatic Disease: Rarely, other pediatric tumors (like Wilms tumor or bone cancers) can present with systemic symptoms and back pain, though the jaundice specifically points back to the mid-abdominal/hilar region. Pott’s Disease (Extrapulmonary Tuberculosis): TB of the spine can cause severe back pain and systemic “B symptoms.” If there is concurrent abdominal TB, it could potentially cause biliary obstruction, though this is less common than a primary mass. Critical Clarifying Questions Because back pain in this context can sometimes indicate pressure on the spinal cord, I need to know: Neurological Symptoms: Is the patient experiencing any weakness in his legs, “pins and needles” sensations, or difficulty walking? Bladder/Bowel Control: Has he had any recent accidents or loss of control over his bladder or bowels? Nature of Pain: Is the back pain worse at night? Does it keep him from sleeping, or is it worse with movement? Location: Is the pain in the mid-back (behind the stomach) or lower down near the lumbar spine? Postural Changes: Does he seem to be leaning to one side or arching his back to find relief? Immediate Recommendation This constellation of symptoms—night sweats, weight loss, jaundice (pale stools/dark urine), and severe back pain—requires an immediate medical evaluation, likely in an Emergency Department. The patient needs urgent imaging (such as a CT scan or MRI of the abdomen and spine) and comprehensive blood work (including a Complete Blood Count with manual differential, Liver Function Tests, and inflammatory markers like LDH and Uric Acid). Would you like me to prioritize a list of specific questions or “red flags” for you to share with an ER physician or specialist? | Differential DiagnosisThe addition of severe back pain to this already alarming symptom cluster (systemic B symptoms: fever, drenching night sweats, weight loss >10%, fatigue, anorexia; nighttime nausea; abdominal pain; obstructive jaundice features: pale/acholic stools, dark urine, pruritus likely; pallor, thin appearance) in an 11-year-old boy transforms this into a high-risk, potentially life-threatening emergency. Severe back pain in children is rare and a major red flag, especially with constitutional symptoms and jaundice. It strongly suggests involvement of the spine, retroperitoneum, or bone marrow—most often from malignancy or infection with vertebral/epidural extension.This presentation has a very high pretest probability for serious pathology. Immediate evaluation is mandatory—go to a pediatric emergency department today (ideally one affiliated with a children’s hospital with oncology, infectious disease, and neurosurgery capabilities). Do not wait for primary care; this could involve spinal cord compression, which is a surgical emergency if there are neurological deficits. Imaging (MRI spine/abdomen/chest with contrast, or at minimum CT if MRI unavailable) and labs are urgently needed.Revised ranked list from most likely to least likely:Lymphoma (Hodgkin or non-Hodgkin, particularly with spinal cord compression or paraspinal mass): Remains the top concern. B symptoms + obstructive jaundice (from porta hepatis lymphadenopathy) + severe back pain (from retroperitoneal/paravertebral lymphadenopathy, vertebral involvement, or epidural extension causing cord compression). Lymphoma is one of the most common pediatric malignancies to present this way; back pain can be the presenting symptom in advanced disease. Tuberculosis (extrapulmonary, specifically Pott’s disease/tuberculous spondylitis): Classic mimic of malignancy. Chronic infection causes night sweats, low-grade fever, weight loss, anorexia, fatigue, and vertebral destruction leading to severe back pain (often localized to thoracic/lumbar spine). Abdominal TB can cause jaundice/obstruction via lymph node compression or peritonitis. Pale stools/dark urine fit if there’s biliary involvement. Common in endemic areas or with exposure. Leukemia (acute lymphoblastic leukemia with bone marrow infiltration or extramedullary disease): Bone pain (including back) is very common due to marrow expansion or periosteal involvement. Can cause hepatosplenomegaly leading to biliary obstruction, anemia (pallor), fatigue, fever, sweats, weight loss. Spinal involvement possible. Other primary or metastatic malignancy (e.g., hepatoblastoma or neuroblastoma with spinal metastasis): Hepatoblastoma can invade locally or metastasize to bone/spine; neuroblastoma often presents with back pain from paraspinal mass or bone mets, plus abdominal symptoms and constitutional signs. Infectious/abscess (e.g., pyogenic vertebral osteomyelitis/discitis or epidural abscess): Can cause severe back pain, fever, sweats, and systemic symptoms. Less likely to cause obstructive jaundice unless secondary involvement. Autoimmune/inflammatory (e.g., juvenile idiopathic arthritis with enthesitis or ankylosing spondylitis-like, or sarcoidosis): Can cause back pain and constitutional symptoms, but jaundice/obstructive pattern is atypical. Pancreatic pathology (e.g., mass or pseudocyst from chronic pancreatitis or malignancy): Could cause back-radiating abdominal pain, nausea, weight loss, and rarely jaundice if obstructing bile duct. Rare in children without trauma or gallstones. This is no longer a “watch and wait” situation—neurological compromise (weakness, numbness, bowel/bladder dysfunction) could develop rapidly if there’s cord compression.Clarifying QuestionsTo help triage urgency and guide the ER team:Back pain details: Exact location (upper/mid/lower back, thoracic, lumbar, sacral)? Does it radiate (e.g., to legs, abdomen, chest)? Quality (sharp, aching, burning)? Severity on 1-10 scale? Constant or worse at night/with movement? Any relieving factors (e.g., lying down, heat)? Neurological symptoms: Any leg weakness, numbness/tingling in legs/feet, difficulty walking, bowel or bladder changes (incontinence, retention, constipation), or saddle anesthesia? Abdominal exam: Any palpable masses, hepatomegaly (enlarged liver), splenomegaly, or severe tenderness in right upper quadrant/epigastrium? Jaundice progression: Any yellowing of skin/eyes? Itching? How pale are stools (completely white/gray/clay-like, or just very light)? Weight loss quantification: How many pounds/kg lost, and over what timeframe? Other red flags: Any headaches, vomiting (projectile?), seizures, vision changes, easy bruising/bleeding, swollen lymph nodes (neck, axilla, groin)? Exposures/history: Travel to TB-endemic areas (or contact with someone who has TB), immigrant/family from high-risk area, unpasteurized dairy/animal contact, recent infections, or family history of cancer/autoimmune/liver disease? Vital signs if known: Recent temperature, heart rate, blood pressure, weight/height percentile (is he underweight now)? Action recommendation: Take the child to the nearest pediatric emergency department immediately and describe the full symptom timeline, including obstructive jaundice signs and severe back pain. Mention concern for possible spinal cord compression or malignancy/infection. If there are any neurological changes (even mild), call emergency services rather than driving. Bring any prior medical records if available. Let me know results of evaluation/labs/imaging so I can help interpret. |
Reflection on Prompt 6
This latest responses from the Generative AI models was, I admit, a gut punch. It seems clear to me that, had these Generative AI models been available to us 5 years ago, it could have helped us make our case with the weight Toby’s situation clearly merited, with statements like:
- Severe back pain in this context is not benign and strongly shifts the differential toward malignant or infiltrative disease involving bone, marrow, or retroperitoneal structures.
- Malignancy — VERY HIGH CONCERN. Now the dominant working diagnosis
- Malignancy must be assumed until ruled out.
- High-risk, potentially life-threatening emergency
- Go to a pediatric emergency department
Toby was officially diagnosed with Fibrolamellar Carcinoma in October 2020. His liver had failed, and at that point, there were no viable treatment options available.
Are LLMs perfect? No.
While not specifically naming something as rare as Fibrolameller Carcinoma, the diagnosis of a probable life-threatening liver-related malignancy was accurate, and a compelling case was made using non-specialized public Generative AI tools.
Had this technology been available as a triage tool, it might have been sufficient to get Toby’s diagnosis confirmed sooner, which could have meant starting treatment sooner before his liver failed, improving his 5-year outlook. He could have been over 12 when…
3 years later, John Hopkins University:
https://fibrofoundation.org/results-of-peptide-vaccine-clinical-trial-discussed
“Results of peptide vaccine clinical trial discussed by Hopkins team”
January 24, 2024
“…25% (3) of the patients achieved significant tumor shrinkage/strong partial responses to the treatment. For the other 9 patients…the disease appeared to stabilize in those patients having an immune response to the vaccine.”
3 years after Toby died of a cancer we couldn’t get diagnosed in time, a vaccine went to clinical trial for FLC. All participants saw either their condition either stabilize, or tumours shrink.
Had we been able to get Toby diagnosed 2 months sooner, there might have been a chance that he could have been eligible for a clinical trial that might have been able to shrink his tumour. This is the significance Generative AI holds for me, as I hope for other families to never have to go through what ours did, when we lost our dear Toby to Cancer.
“Imagine if fewer people suffered and died from cancer because we detected and diagnosed the disease or its precursors at the earliest possible stage.”
National Cancer Institute