Unstable angina due to spontaneous dissection of a LIMA graft

We report a case of a spontaneous dissection of a left internal mammary art ery grafted on the diagonal branch and the left anterior descendens. The cl inical and diagnostic features of this condition are discussed. Despite an extensive literature search, no such case could be found,This case report m ust be regarded as the first. We speculate that extensive kinking of the le ft internal mammary artery contributed in the pathogenesis of this syndrome .