PMC5436916_01
Photomicrograph of the heart showing coronary artery deposition of amyloid filling the lumen (H&E).
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On gross examination, the heart showed a recent lateral left ventricular wall infarction, multifocal myocardial replacement fibrosis, and amorphous eosinophilic intimal deposits in the intramural arteries (Figure 1) causing severe stenosis.
Photomicrograph of the heart showing coronary artery deposition of amyloid. A - Congo red; B - Amyloid P staining.
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Stains for Congo red (Figure 2A) and the amyloid P component (Figure 2B) were positive for amyloid deposition in virtually all intramyocardial arteries.