PEIR Digital Library

Welcome to the Pathology Education Informational Resource (PEIR) Digital Library, a multidisciplinary public access image database for use in medical education.

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GROSS: CARDIOVASCULAR: HEART: Aortic valve: Fibrosis Commissure Fusion Cause Unknown: Gross natural color opened left ventricular outflow tract with subaortic shelf and thickened endocardium aortic valve shows changes suggesting rheumatic etiology but mitral valve looks normal 64yo male