这是一例因13三体综合征而流产的早产儿心脏。可见室间隔缺损。大约90%的室间隔缺损发生在膜部，10%的发生在肌部。
This is the heart of a premature stillborn with Trisomy 13 in which a ventricular septal defect is visible in the membranous septum. About 90% of VSD's are in the membranous septum and 10% in the muscular septum.