Topographical anatomy on the splenic artery of Japanese fetuses

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  • 本邦人胎児脾動脈脾枝の局所解剖学的検索
  • ホン ホウジン タイジ ヒ ドウミャク ヒ シ ノ キョクショ カイボウガクテ

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There exist considerable literatures on the topographic studies of the splenic vessels, especially on the ramification of the splenic artery of Japanese adults. However, little work has beendone of Japanese fetuses. Only article concerning this subject was described by Aso in 1931, who reported the gathering of venous branches at hilus lienis of Japanese fetuses. He classifiedits gathering patterns into nine types, as shown in Fig. 1.<BR>Purpose of this work is also to determine the ramification patterns of splenic artery at hiluslienis of Japanese fetuses. This study was performed in 50 cases as listed in Table 1. In orderto study the intrasplenic distribution of the vessels, author made corrosion casting specimens withsynthetic resin and rubber. The detailed description of the method and technique has been givenby Kikkawa (1969).<BR>The primary objectives of this papaer are to clarify followings: 1) deviding patterns of thestem of a. lienalis by the splenic hilum, 2) origin of a. polaris superior and its course, (3) extralienalanastomosis of arterial branches, 4) origin and course of a. gastro-epiploica sinistra, and 5) origin and distribution of a. caudae pancreatis.<BR>The results of authors observations showed no significant difference from those of the adultswhich described by Kikkawa in 1969.

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