Multiple coronary arterioventricular fistulae.

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Abstract
A 62 yr old man who died suddenly was found at autopsy to have multiple coronary arteriosystemic fistulae involving all 3 major coronary arteries and both ventricles. This is the 2nd such case reported and the first with biventricular involvement and autopsy findings. A congenital bicupsid valve was also present. Numerous small blood vessels opened onto the endocardial surface of both ventricles, and there were microscopic foci of persistent embryonic spongy myocardium.