Unusual Coronary Collateral Circulation: Filling of a Totally Occluded Left Anterior Descending Artery by Direct Continuity from a Left Posterior Descending Artery

Abstract

A patient with an unusual coronary collateral circulation is presented. The left anterior descending artery, which was totally occluded proximally, was filled directly by a contin uation of the left posterior descending artery. A thallium stress test revealed normal perfusion in the territory of the left anterior descending artery.