Breast necrosis following use of the internal mammary artery for coronary artery bypass

Coronary artery bypass grafting is a common surgical procedure for myocardial revascularization. This operation usually involves the use of the left internal mammary artery to bypass the left anterior descending coronary artery. The internal mammary artery and its perforators are also an important blood supply to the female breast, though not considered a critical blood supply. Due to an abundant blood supply from multiple sources, complications of the female breast are rare. We present a case report of a patient who developed necrosis of the entire medial left breast and superior abdominal wall following coronary artery bypass grafting which used the left internal mammary artery.