Abstract
In 75 (0.9%) of 8235 patients without associated congenital heart disease studied by arteriography, a vessel was missing from its normal location, and this was the result of an anomalous origin. Symptoms attributable to these aberrant vessels were present in 19 of 75 patients. Although rare, these anomalies can produce specific clinicopathological entities which can be diagnosed angiographically and treated surgically. Failure to recognize these anomalies of coronary anatomy prolonged arteriographic procedures and led to repeated catheterizations in 28 of the 75 cases (37%).