Echocardiography demonstrated an 8-cm mass adjacent to the right side of th
e heart in a 79-year-old man with a history of hypertension and a repaired
abdominal aortic aneurysm. The results of Doppler echocardiography and magn
etic resonance imaging suggested the diagnosis of an unusually large corona
ry artery aneurysm, and this was confirmed with coronary angiography. At su
rgery, the 8- to 10-cm coronary aneurysm was resected, and the patient made
an uneventful recovery.