Severe hemoptysis 6 years after coronary artery bypass grafting.

A patient with a history of coronary artery bypass grafting was admitted with severe hemoptysis. Bronchoscopy showed recent bleeding with clot formation in the lingular bronchus, but no tumor was visualized. Several biopsies of the underlying mucosa were negative. Coronary angiography showed patent venous and arterial bypass grafts. Selective angiography of the left internal mammary artery revealed one large and two smaller aberrant bronchial side branches, which probably caused the lingular hemorrhage. We performed embolization of the largest aberrant branch. After a follow-up of 3 months, hemoptysis had not recurred.