Angiographic evidence of thrombosis after off-pump coronary surgery. A case report.

We report the case of a patient who underwent off-pump coronary surgery, whose postoperative (3 days) angiography showed the presence of a thrombus in the left internal mammary artery. The thrombus responded to an aggressive anticoagulant treatment, showing a perfect angiographic result 15 months later. According to our previous studies, we suggest that an adequate anticoagulant treatment should be undertaken for patients undergoing off-pump coronary surgery in the early postoperative period.