Partial Atrioventricular Septal Defect with Left Atrioventricular Valve Aneurysm Mimicking Valve Perforation

ABSTRACT Left atrioventricular valve aneurysm is a rare condition. Here we present a rare case of partial atrioventricular septal defect with an extremely thin left atrioventricular valve aneurysm mimicking valve perforation. Preoperative echocardiography demonstrated severe left sided atrioventricular valve regurgitation on the “cleft” and leaflet perforation. But we discovered a left sided atrioventricular valve aneurysm instead of a valve perforation. The “cleft” edge and the aneurysm were closed.

摘要 左房室瓣瘤（left atrioventricular valve aneurysm）是一种罕见病症。本文报告1例罕见的部分型房室间隔缺损（partial atrioventricular septal defect）病例，患者合并极为菲薄的左房室瓣瘤，其表现酷似瓣叶穿孔（valve perforation）。术前超声心动图（echocardiography）显示，“裂缺”区域存在重度左侧房室瓣反流，并疑似瓣叶穿孔。但术中实际探查发现为左侧房室瓣瘤，而非瓣叶穿孔。术者对“裂缺”边缘及瘤体实施了缝合闭合。