Anatomy and embryology in cephalothoracopagus twins.
Anatomy and embryology in cephalothoracopagus twins.
复制标题
头胸部双胞胎的解剖学和胚胎学。
DOI：
10.1002/tera.1420230202
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
Rowlatt,UF
中科院分区：
文献类型：
--
作者：
Herring,SW;Rowlatt,UF
解剖特征描述的情况下，头胸并胎女性双胞胎与横向融合的头部。有一个单一的前肠，由两个人平均分享。气管、肺、心脏、肝脏和胆囊也由两个个体共享。它们位于连接体的前部和后部区域。这些特殊性发生在文献报道的头胸并胎双胎的其他病例中，可能是由发育中的双胎胚胎的空间问题引起的。特别是，每个心脏被认为是一个复合器官，由来自两个个体的组织形成。头骨的枕部是双的，但头骨的其余部分是单的。口腔被下颌体中线一分为二，下颌体被认为代表两个下颌骨融合的内侧部分。每一个这样形成的隔间都包含一个舌头。这个中线体被认为是造成唇腭裂的原因。最后，我们提出，在这个和其他情况下，横向融合头无脑畸形与机械困难，在关闭吻神经孔。
Anatomical features are described in a case of cephalothoracopagus female twins with laterally fused heads. There was a single foregut, shared equally by the two individuals. The tracheae, lungs, hearts, livers, and gallbladders were also shared by the two individuals. They were located in the anterior and posterior regions of the joined bodies. These peculiarities occur in other cases of Cephalothoracopagus twinning reported in the literature, and may have been caused by spatial problems in the developing twin embryos. In particular, each heart is considered to be a composite organ, formed by tissue from both individuals. The occipital region of the skull was double, but the remainder of the cranium was single. The oral cavity was divided in two by a midline mandibular body thought to represent the fused medial portions of two mandibles. Each compartment so formed contained a tongue. This midline body is considered responsible for a cleft lip and palate. Finally, we propose that anencephaly in this and other cases of laterally fused heads is associated with mechanical difficulty in closing the rostral neuropore.