Wenink A C, Ottenkamp J
Int J Cardiol. 1987 Jul;16(1):57-73. doi: 10.1016/0167-5273(87)90270-1.
In 10 out of 31 cases of tricuspid atresia (absent atrioventricular connexion), gross examination of the morphologically right ventricle suggested the presence of a tiny inlet portion in addition to the trabecular portion. Serial sections of two of these hearts have proven this diagnosis: a fibrous remnant in continuity with the central fibrous body was present not only above the left ventricle but also above the right ventricle. We interpreted this as a remnant of the atrioventricular valve and we also observed that the ventricle had a hypoplastic inlet portion. This inlet portion was bounded by a microscopically small septomarginal trabeculation containing the right bundle branch. Therefore, the diagnosis of absent connexion, which after clinical or gross anatomical investigation remains an appropriate one, cannot always be maintained after microscopical study if it is considered that the fibrous remnant represents evidence of a connexion initially present between the right ventricle and the right atrium.
在31例三尖瓣闭锁（房室连接缺失）病例中，有10例在大体检查时，形态学上的右心室除小梁部外，还提示存在一个微小的流入道部分。其中两颗心脏的连续切片证实了这一诊断：不仅在左心室上方，而且在右心室上方都存在与中心纤维体相连的纤维残余物。我们将此解释为房室瓣的残余物，并且还观察到心室的流入道部分发育不全。该流入道部分由含有右束支的显微镜下较小的隔缘小梁界定。因此，如果认为纤维残余物代表右心室和右心房之间最初存在连接的证据，那么在临床或大体解剖学检查后仍然合适的无连接诊断，在显微镜检查后并不总是能够成立。
