Dubois R W, Neill C A, Hutchins G M
Pediatr Pathol. 1983 Oct-Dec;1(4):435-42. doi: 10.3109/15513818309025875.
A 4-day-old female had an uneventful prenatal course and delivery. Immediate cyanosis improved with oxygen therapy. Cardiomegaly on chest radiograph, right bundle branch block on electrocardiogram, and apparent increased tricuspid valve excursion on echocardiography led to a diagnosis of Ebstein's anomaly. Death occurred unexpectedly. Autopsy demonstrated a rhabdomyoma of the interventricular septum, which had produced obstruction to right ventricular outflow and had interrupted the right bundle branch of the conducting system. It appears that the massive size of the septal tumor led to its misdiagnosis on the echocardiogram.
一名4日龄女婴产前过程及分娩均正常。出生后立即出现青紫，经氧疗后改善。胸部X线片显示心脏扩大，心电图显示右束支传导阻滞，超声心动图显示三尖瓣活动明显增加，从而诊断为埃布斯坦畸形。患儿意外死亡。尸检发现室间隔有一个横纹肌瘤，该肿瘤导致右心室流出道梗阻，并中断了传导系统的右束支。看来，间隔肿瘤的巨大尺寸导致了超声心动图上的误诊。
