Passaro's triangle or gastrinoma triangle is a presumptive region in the abdomen between three points:
- Superior—porta hepatis (earlier—confluence of the cystic and common bile duct),
- Inferior—junction of the second and third portion of duodenum, and
- Medial—junction of the neck and body of the pancreas
The importance of the triangle is because it is known as the source of origin of most gastrinomas. However, primary gastrinomas can also occur in the liver or extrahepatic bile ducts, commonly with metastasis to the local lymph nodes.
The appellation is due to Edward Peter Passaro, an American surgeon, who explained it for the first time.
References
- Yang, Rong-Hsin; Chu, Yum-Kung (2015). "Zollinger-Ellison syndrome: Revelation of the gastrinoma triangle". Radiology Case Reports. 10 (1): 827. doi:10.2484/rcr.v10i1.827. PMC 4921170. PMID 27408649. 827.
- ^ Stabile, Bruce E.; Morrow, Douglas J.; Passaro Jr., Edward (1984). "The gastrinoma triangle: Operative implications". The American Journal of Surgery. 147 (1): 25–31. doi:10.1016/0002-9610(84)90029-1. PMID 6691547.
- ^ Weerakkody, Yuranga. "Gastrinoma triangle - Radiology Reference Article - Radiopaedia.org". Radiopaedia.org. Retrieved 30 November 2018.
- Yagnik, Vipul (30 November 2018). Fundamentals of Operative Surgery. BI Publications Pvt Ltd. p. 170. ISBN 9788172253004. Retrieved 30 November 2018 – via Google Books.
- Norton, Jeffrey A.; Foster, Deshka S.; Blumgart, Leslie H.; Poultsides, George A.; Visser, Brendan C.; Fraker, Douglas L.; Alexander, H. Richard; Jensen, Robert T. (2018). "Incidence and Prognosis of Primary Gastrinomas in the Hepatobiliary Tract". JAMA Surgery. 153 (3): e175083. doi:10.1001/jamasurg.2017.5083. PMC 5885930. PMID 29365025. e175083.
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