CONGENITAL HYPOPLASIA OF BOTH RIGHT AND LEFT CIRCUMFLEX CORONARY-ARTERIES

When the right coronary artery is dominant, i.e., it courses to the crux of the heart, the left circumflex coronary artery is usually quite small and therefore may be considered hypoplastic (Figure 1). Conversely, when the left circumflex is the dominant coronary artery, i.e., it courses to the crux of the heart, the right coronary artery is usually small and therefore may be considered hypoplastic (Figure 1). Hypoplasia of both right and left circumflex coronary arteries in the same heart, however, is a rare occurrence (Figure 1). Examination of 3,400 hearts during the last 8 years disclosed at least 8 to have hypoplasia plasia of both right and left circumflex coronary arteries. Certain findings in these 8 patients will be described here. © 1992.