A 65-year-old male dies suddenly. Autopsy reveals a 'bread and butter' appearance of the pericardium. What is the most likely underlying pathology?
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Correct answer: Fibrinous pericarditis
Fibrinous pericarditis is characterized by a shaggy, irregular exudate composed of fibrin, giving it the classic 'bread and butter' macroscopic appearance. This is commonly seen in uremia, acute MI, or rheumatic fever.
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