胎儿乙状结肠的解剖部位与形态的观察

THE ANATOMY POSITION AND THE MORPHOLOGY ON FOFTAL SIGMOID COLON

本文对227例4-10月龄的新鲜胎儿尸体进行了尸检观察,发现胎儿的乙状结肠解剖部位不定、形态多样.按所在部位不同可分三型:左侧型,占5.72%,右侧型,占12.33%;中间型,占81.95%。后者按其形态又可分为正中型、偏右型和多形型三个亚型。初步讨论了其形成的原因。除一般认为与乙状结肠系膜的长度有关外,我们认为还有其他多种因素如结肠的发育状况,胎粪的集存,骨盆的发育以及乙状结肠的长度等与之有关。

Observations on 227 fresh foetal corpses at the age of 4.-10 months by autopsy showed that the morphology and the anatomical position of the foetal sigmoid colons were multiform. According to the position, sigmoid colons could be classified into 3 types which were the left-side, the right-side, and the intermediate position with percentages of 5.72, 1?.33, and 81.95 respectively. The type of intermediate position could be divided further into 3 subtypes which were midline, slightly right of midline, and multiform. The reasons causer the results were discussed.