Landmark clinical cases that shaped modern medicine. Each case is presented as a clinical scenario, try to guess the diagnosis before revealing the answer.
Case 1 ยท 1848
Neurology
A 25-year-old railroad foreman survives a 3-foot, 7-inch iron rod blasting through his left frontal lobe during a blasting accident. He walks and talks within minutes. In the months that follow, his colleagues report he is "no longer Gage", previously reliable and respectful, he becomes impulsive, profane, and unable to follow through on plans.
Clinical Question: What neuroanatomical structure was damaged, and what syndrome does this localize to?
Phineas Gage, Frontal Lobe Syndrome
The rod destroyed the left prefrontal cortex, specifically the orbitofrontal and ventromedial regions. This case provided the first clinical evidence that the frontal lobes mediate personality, executive function, and social behavior. It remains foundational in neuroscience, used to teach frontal lobe localization, the distinction between "preserved intelligence" and impaired judgment, and the concept of acquired sociopathy.
Case 2 ยท 1951
Oncology ยท Ethics
A 31-year-old African American woman presents with vaginal bleeding. Biopsy reveals an aggressive cervical carcinoma. Despite radiation therapy, she dies 8 months later. Cells taken from her tumor, without her knowledge or consent, prove to be uniquely immortal in culture, doubling every 20โ24 hours. They become the most widely used human cell line in biomedical research.
Clinical Question: What cell line was derived from this patient, and what ethical issues does it highlight?
Henrietta Lacks, HeLa Cells & Informed Consent
HeLa cells (from Henrietta Lacks) were the first immortalized human cell line. They have been used in polio vaccine development, cancer research, HIV/AIDS studies, and COVID-19 research, contributing to over 75,000 publications. Her case is the landmark example of informed consent failures in medical research. It directly influenced the development of modern bioethics guidelines including the Common Rule and Belmont Report.
Case 3 ยท 1947โ1963
Endocrinology
A young politician with a history of chronic back pain, fatigue, and GI complaints develops progressive skin hyperpigmentation, hypotension, and weight loss. Labs reveal hyponatremia and hyperkalemia. He is started on daily cortisone replacement and DOCA pellet implants, which he will take for the rest of his life. His medical records are kept strictly confidential due to the political implications of a chronic illness diagnosis.
Clinical Question: What endocrine disorder does this presentation suggest, and what is the classic electrolyte pattern?
John F. Kennedy, Addison's Disease (Primary Adrenal Insufficiency)
JFK had autoimmune primary adrenal insufficiency characterized by cortisol and aldosterone deficiency. The classic electrolyte pattern is hyponatremia + hyperkalemia (from aldosterone deficiency). Hyperpigmentation occurs due to elevated ACTH stimulating melanocyte receptors. His case illustrates how adrenal crisis can be precipitated by physiologic stress, during his presidency, he required stress-dose steroids during multiple medical crises. His treatment regimen included hydrocortisone and fludrocortisone.
Case 4 ยท 1788โ1820
Hematology ยท Psychiatry
A monarch in his 50s develops recurrent episodes of severe abdominal pain, constipation, tachycardia, and limb weakness. During acute episodes he becomes confused, agitated, and frankly psychotic, speaking rapidly for hours and exhibiting paranoid delusions. His physicians note his urine is dark, described as "port wine colored." He suffers at least 5 major episodes over 30 years, each lasting weeks to months.
Clinical Question: What metabolic disorder explains the combination of neurovisceral symptoms and dark urine?
King George III, Acute Intermittent Porphyria
The leading retrospective diagnosis is acute intermittent porphyria (AIP), a defect in porphobilinogen deaminase causing accumulation of ALA and PBG. The classic triad is abdominal pain + neuropsychiatric symptoms + autonomic dysfunction. Port-wine urine results from porphobilinogen oxidizing to porphobilin on standing. Attacks are triggered by fasting, medications, and stress. This case is a board-favorite for teaching the porphyrias and the differential of acute abdominal pain + psychiatric symptoms.
Case 5 ยท 1821
Oncology ยท GI
A 51-year-old exiled military leader on a remote island develops progressive epigastric pain, nausea, and anorexia over 18 months. He loses significant weight despite initially being overweight. His father died of a "pyloric obstruction." On autopsy, a large ulcerated mass is found at the pylorus with extension to adjacent lymph nodes. Modern hair analysis reveals arsenic levels 38ร normal, raising debate about poisoning versus environmental exposure.
Clinical Question: What is the most likely diagnosis, and what hereditary cancer syndrome might this family history suggest?
Napoleon Bonaparte, Gastric Adenocarcinoma
Autopsy confirmed gastric adenocarcinoma at the pylorus. The family history (father, grandfather, and three sisters also died of stomach cancer) raises suspicion for hereditary diffuse gastric cancer (HDGC), associated with CDH1 mutations. The arsenic finding is likely from environmental exposure (green wallpaper containing copper arsenate was common in the era). Teaching points: alarm features for gastric cancer (weight loss, early satiety, progressive dyspepsia >55), family history red flags, and when to suspect hereditary cancer syndromes.
Case 6 ยท 1827
Toxicology ยท Hepatology
A 56-year-old composer with a 30-year history of progressive bilateral sensorineural hearing loss, chronic diarrhea, and heavy alcohol use presents with abdominal distension, jaundice, and recurrent fever. He undergoes paracentesis four times in his final months. He dies of hepatic failure. Modern analysis of his hair reveals lead levels 100ร above normal. Genomic sequencing of his hair (2023) confirms hepatitis B infection and multiple genetic risk variants for liver disease.
Clinical Question: What are the likely causes of his liver disease, and what is the differential for his hearing loss?
Ludwig van Beethoven, Multifactorial Liver Failure & Lead Poisoning
His death was caused by hepatorenal syndrome from decompensated cirrhosis. Contributing factors included alcohol use, hepatitis B infection (confirmed by 2023 DNA analysis), and chronic lead exposure (from adulterated wine, a common practice in 19th-century Europe). The hearing loss differential includes lead ototoxicity, otosclerosis, and autoimmune inner ear disease. Teaching points: multifactorial liver disease, lead toxicity (abdominal colic, neuropathy, hearing loss, nephropathy), and the importance of considering environmental exposures.
Case 7 ยท 1921
Neurology ยท Infectious Disease
A 39-year-old politician vacationing at a Canadian island develops fever, malaise, and progressive ascending symmetric weakness over 3 days after swimming in cold water. He develops urinary retention and bilateral lower extremity paralysis. Sensory exam is notable for facial pain and leg dysesthesias. CSF shows mild pleocytosis. He never regains the ability to walk independently. The diagnosis at the time was poliomyelitis, but a 2003 retrospective analysis argued for an alternative diagnosis.
Clinical Question: What are the two leading diagnoses, and what clinical features help distinguish them?
Franklin D. Roosevelt, Poliomyelitis vs. Guillain-Barré Syndrome
FDR was diagnosed with poliomyelitis, but a 2003 Bayesian analysis (Goldman et al.) argued Guillain-Barré syndrome was 8ร more likely given his age (39, rare for polio), symmetric descending-to-ascending paralysis, facial pain, dysesthesias, and prolonged fever. Polio favors: asymmetric weakness, no sensory involvement, younger patients. GBS favors: symmetric ascending paralysis, sensory symptoms, areflexia, albuminocytologic dissociation. Teaching point: this case is a classic board question on distinguishing acute flaccid paralysis, always compare the pattern of weakness, sensory findings, and CSF profile.
Case 8 ยท 1977โ1981
Dermatology ยท Oncology
A 32-year-old Jamaican musician notices a dark streak under his right great toenail after a soccer injury. He attributes it to the injury. A biopsy eventually reveals malignant melanoma. He declines amputation of the toe due to religious beliefs (Rastafari), opting for excision of the nail bed only. Four years later he presents with metastatic disease to the lungs, liver, and brain. He dies at age 36.
Clinical Question: What subtype of melanoma is most common in dark-skinned individuals, and what is the ABCDE rule modification for subungual lesions?
Bob Marley, Acral Lentiginous Melanoma
Acral lentiginous melanoma (ALM) is the most common melanoma subtype in African American, Hispanic, and Asian patients. It occurs on palms, soles, and nail beds, areas often missed on routine skin exams. For subungual melanoma, use the ABCDEF rule: Age (peak 50โ70), Band (brown-black, breadth >3mm), Change (rapid growth), Digit (thumb/great toe most common), Extension (Hutchinson sign, pigment extending to nail fold), Family history. His case highlights the critical importance of examining acral sites in all skin types and not dismissing nail pigmentation as traumatic.
8 cases ยท Updated April 2026 ยท More cases coming soon