Single right coronary artery with hypoplastic left coronary artery represented by only descending septal branch from the right sinus of Valsalva.

A case is presented with combined anomalies of coronary arteries: single dominant right coronary artery, ectopic origin of hypoplastic left coronary artery from the right sinus of Valsalva, anomalous interseptal course of the latter artery, absence of typical left descending and circumflex arteries from the left coronary artery and presence of myocardial bridging.