Vasospasm causes an abrupt and temporary occlusion in coronary arteries in patients with normal coronary arteries. Nonetheless, vasospasm of the left main coronary artery is unusual and can be spontaneous or iatrogenic. We herein report a very rare cause of temporary spasm of LMCA, which resulted in vasospastic angina and anginal chest pain. Intravascular ultrasonography should be considered as a good diagnostic tool in revealing the exact etiology of occlusions such as vasospasm or thrombosis.
Keywords: Intravascular ultrasonography, left main coronary artery, vasospasm
