Local aneurysmal dilatation mimicking stent malapposition and concurrent vulnerable plaque within neointima of normal lumen after drug-eluting stent implantation： primary new findings from optical coherence tomography  

作　　者：GUO Yuan-lin YANG Yue-jin GAO Zhan QIAN Jie 

机构地区：[1]Clinical and Research Center for Coronary Disease,Fu Wai Hospital,Chinese Academy of Medical Sciences&Peking Union Medical College,Beijing 100037,China

出　　处：《Chinese Medical Journal》2012年第6期1186-1188,共3页中华医学杂志（英文版）

摘　　要：Very late stent thrombosis is a life-threatening complication of implantation of drug-eluting stent （DES）. The mechanisms are still unidentified. Stent malapposition is supposed to be one debated reason. Here we report a case of 33 months after DES implanted. Observed by optical coherence tomography, we detected a lipid-rich plaque with defective fibrous cap within the neointima and many local aneurysmal dilatations between stent struts, which mimic ＂malapposition＂ on the angiogram. These indicated that vulnerable plaque hidden in the neointima at the stent segment might be a potential mechanism of very late stent thrombosis after DES implantation.Very late stent thrombosis is a life-threatening complication of implantation of drug-eluting stent （DES）. The mechanisms are still unidentified. Stent malapposition is supposed to be one debated reason. Here we report a case of 33 months after DES implanted. Observed by optical coherence tomography, we detected a lipid-rich plaque with defective fibrous cap within the neointima and many local aneurysmal dilatations between stent struts, which mimic ＂malapposition＂ on the angiogram. These indicated that vulnerable plaque hidden in the neointima at the stent segment might be a potential mechanism of very late stent thrombosis after DES implantation.

关 键 词：drug-eluting stent stent malapposition vulnerable plaque optical coherence tomography 

分 类 号：Q492.6[生物学—生理学] TS943.26[轻工技术与工程—服装设计与工程]