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 close-up of aortic valve and portion of mitral valve lesion probably was rheumatic many slides in file some purporting to show healed Aschoff nodules mitral valve looks awfully normal