A 51 Year Old Man with Neck Pain (foramen magnum meningioma): CPC 19-1979 A 68 Year Old Man with a Gait Disorder (Paget disease with extramedullary hematopoiesis): CPC 23-1981 A 16 Year Old Boy with Confusion (parainfectious encephalopathy from mycoplasma): CPC 35-1981 A 63 Year Old Woman with Agitation and an Extrapyramidal Syndrome (multisystem atrophy): CPC 23-1983 A 29 Year Old Woman with Myalgia and Muscle Weakness (porphyria): CPC 39-1984 A 62 Year Old Man with Progressive Polyneuropathy (amyloidosis): CPC 26-1986 A 26 Year Old Woman with Dilated Cardiomyopathy and a Stroke (pheochromocytoma): CPC 15-1988 A 35 Year Old Man with Changed Mental Status and Multiple Intracerebral Lesions (neurosyphilis): CPC 32-1991 A 71 Year Old Man with a Rash, Muscle Weakness and Respiratory Failure (paraproteinemic neuropathy): CPC 21-1993 A 49 Year Old Man with an Intracranial Mass (primary central nervous system lymphoma): CPC 36-1994 An 18 Year Old Man with Headache, Ataxia and Slurred Speech (Q fever cellulitis): CPC 38-1996 A 43 Year Old Woman with Adult Respiratory Distress Syndrome (Rocky Mountain spotted fever): CPC 32-1997 A 74 Year Old Woman with Diarrhea and Fever Followed by Multiple Cranial Nerve Palsies (Campylobacter related Guillain-Barre syndrome): CPC 39-1999 A 31 Year Old Man with an Apparent Seizure and A Cerebral Lesion (schistosomiasis): CPC 21-2001 A 61 Year Old Man with Headache and Multiple Infarcts (Trousseau syndrome): CPC 31-2002 A 77 Year Old Man With Ear Pain, Difficulty Speaking and Altered Mental Status (otic bacterial meningitis): CPC 34-2007 A 49 Year Old Man with Peripheral Neuropathy and Ascites (POEMS syndrome): CPC 7-2010 A 54 Year Old Woman with Dizziness and Falls (pheochromocytoma): CPC 14-2010.