A 38-Year-Old Man Dies Suddenly at His Workplace and Cannot

A 38-year-old man dies suddenly at his workplace and cannot be resuscitated.  He had experienced chest discomfort, shortness of breath, and fatigue in the week preceding the event.  The man was overweight but otherwise had no significant medical history.  He had no established primary care physician.  He did not use alcohol, tobacco, or illicit drugs.  Both parents are alive and healthy; a maternal uncle reportedly died of a heart attack at age 50.  Autopsy was performed and myocardial findings are shown in the slide below. Which of the following is the most likely diagnosis?

A) Acute myocarditis
B) Cardiac amyloidosis
C) Congenital long QT syndrome
D) Early-onset coronary artery disease
E) Hypertrophic cardiomyopathy

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