We report the case of a patient who underwent off-pump coronary surgery, wh
ose 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 la
ter. According to our previous studies, we suggest that an adequate anticoa
gulant treatment should be undertaken for patients undergoing off-pump coro
nary surgery in the early postoperative period.