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十二指肠小乳头

十二指肠小乳头
标识字符
拉丁文papilla duodeni minor
TA98A05.6.02.016
TA22956
FMAFMA:15075
解剖学术语

十二指肠小乳头是位于十二指肠大乳头上方1~2cm处的又一较小隆起,为副胰管进入十二指肠降段的开口。[1]

结构

十二指肠小乳头位于十二指肠的第二部分。它位于十二指肠大乳头近端2厘米处,距幽门开口5-8厘米。[1]胃十二指肠动脉位于它的后方。[2]

变异

十二指肠小乳头可能包含或不包含有功能的括约肌和未闭导管。存在时括约肌被称为Helly括约肌,而导管则被称为圣托里尼岛的副胰管。在10%的人中,十二指肠小乳头是胰腺引流的主要导管,[2]在其他人中可能根本不存在。[3]

功能

导管是胚胎残余物,但在少数人中会引流胰腺。[2]

发育

十二指肠小乳头代表副胰管开口的残余物,在胎儿发育过程中排出背侧胰芽。

临床意义

闭合时,十二指肠小乳头可能与复发性胰腺炎有关。这在一部分人中尤其常见,当背侧胰芽未能与腹侧胰芽融合时,这种情况称为胰腺分裂,[4]或当闭合和结扎时。[2]

参考文献

  1. ^ 1.0 1.1 Suda, Koichi. Histopathology of the minor duodenal papilla. Digestive Surgery. 2010, 27 (2) [2022-07-05]. ISSN 1421-9883. PMID 20551659. doi:10.1159/000286920. (原始内容存档于2022-07-05). 
  2. ^ 2.0 2.1 2.2 2.3 Skandalakis, John E.; Colborn, Gene L. Chapter 16: Small Intestine. Skandalakis' Surgical anatomy : the embryologic and anatomic basis of modern surgery. Athens, Greece: PMP. 2004. ISBN 960-399-074-4. OCLC 56469306. 
  3. ^ Skandalakis, John E.; Colborn, Gene L. Skandalakis' Surgical anatomy : the embryologic and anatomic basis of modern surgery. Athens, Greece: PMP. 2004. ISBN 960-399-074-4. OCLC 56469306. 
  4. ^ Colledge, Nicki R.; Walker, Brian R.; Ralston, Stuart; Davidson, Stanley, Sir. Davidson's principles and practice of medicine. 21st. Edinburgh: Churchill Livingstone/Elsevier. 2010 [2022-07-05]. ISBN 978-0-7020-3085-7. OCLC 455157186. (原始内容存档于2020-06-20). 

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十二指肠小乳头
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