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Anatomy of the Perihilar Biliary Tract: Let’s Learn it Before Performing Drainage Ryota MATSUKI 1 , Masaharu KOGURE 1 , Takaaki ARAI 1 , Nobuhiro HASUI 1 , Shohei KAWAGUCHI 1 , Hirokazu MOMOSE 1 , Yutaka SUZUKI 1 , Eiji SUNAMI 1 , Nobutsugu ABE 1 , Yoshihiro SAKAMOTO 1 1Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan Keyword: perihilar bile duct , biliary anatomic variation , infraportal bile duct pp.1031-1038
Published Date 2022/6/25
DOI https://doi.org/10.24479/endo.0000000223
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 The perihilar bile duct has a variety of confluence pattern. Variation in the confluence of the right hepatic bile duct is mainly determined by the confluence pattern of the posterior bile duct. In general, the posterior bile duct joins the anterior bile duct via supraportal route to form the right hepatic bile duct. But the posterior bile duct joins the anterior bile duct via infraportal route in 17% of cases. The posterior bile duct joins the left hepatic duct in 12% of cases, thus the right hepatic duct is absent in 15% of cases. The left hepatic bile duct is generally formed by the confluence of B4 and B2+3. But the left hepatic bile duct formed by the confluence of B2 and B3+4 in 18% of cases. The biliary branches of the caudate lobe generally join the perihilar bile duct. Of these, the biliary branches in the paracaval portion joins the posterior bile duct in 63% of cases. Basic knowledge and individual variation of the anatomy of the perihilar bile duct are essential for adequate biliary drainage.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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