[A case of saccular aneurysm of the coronary artery post PTCA]

We experienced a 48-year-old man who was diagnosed as having a saccular aneurym of the coronary artery by CAG after an otherwise uneventful percutaneous transluminal coronary angioplasty (PTCA). At the time of operation, the aneurysm, measured 15 mm, and arose from the 3rd segment of the right coronary artery. Aneurysmal formation after successful PTCA is not rare and is related to the overinflating balloon. It is necessary to evaluate the coronary artery after PTCA by IVUS. There were no symptoms after the operation and he was discharged at 21th postoperative day.