摘要Capecitabine is an orally available chemotherapeutic agent that is converted to 5-fluorouracil (5-FU) after absorbtion.Capecitabine and its active metabolite,5-FU,have cardiotoxic effects with reported instances of acute coronary syndromes caused due to coronary vasospasm.However,these agents exert toxic effects on cardiovascular system and beyond vasospasm provacation.We report a 46-year-old patient diagnosed as acute inferior infarction who is treated with capecitabine for 3 months due to metastatic breast carcinoma,in whom thrombotic coronary occlusion was observed in angiography.This case demonstrates that apart from vasospasm,coronary thrombosis could be observed after capecitabine treatment,with a possible direct effect of this drug.