Kissing Lesion of Mitral Valve - A Case Report

Abstract Aortic valve endocarditis can lead to secondary involvement of aorto-mitral curtain and the adjacent anterior mitral leaflet (AML). The secondary damage to AML is often caused by the infected jet of aortic regurgitation hitting the ventricular surface of the mitral leaflet, or by the pronounced bacterial vegetation that prolapses from the aortic valve into the left ventricular outflow tract. This is called ‘kissing lesion’. We describe a patient with infective endocarditis of the aortic valve causing perforation of both noncoronary cusp of aortic valve and the AML, which is rare.

摘要：主动脉瓣心内膜炎（aortic valve endocarditis）可继发累及主动脉-二尖瓣帘（aorto-mitral curtain）及邻近的二尖瓣前叶（anterior mitral leaflet, AML）。二尖瓣前叶的继发性损伤通常由主动脉瓣反流的感染性射流冲击二尖瓣叶的心室面，或是从主动脉瓣脱垂至左心室流出道的显著细菌性赘生物所导致，此种病变被称为"吻状病变"（kissing lesion）。本文报道1例主动脉瓣感染性心内膜炎病例，其同时合并主动脉瓣无冠状动脉瓣窦与二尖瓣前叶穿孔，该病例较为罕见。