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The gastrinoma triangle, also known as Passaro's triangle, is an anatomical area in the abdomen, from where the majority (90%) of gastrinomas are thought to arise.
The triangle is formed by joining the following three points:
- superiorly: confluence of the cystic and common bile ducts
- inferiorly: junction of the second and third portions of the duodenum
- medially: junction of the neck and body of the pancreas
History and etymology
Edward Peter Passaro (1930-2017) was an American GI surgeon, who described his eponymous triangle in 1984 2.
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- 2. Stabile BE, Morrow DJ, Passaro E. The gastrinoma triangle: operative implications. Am. J. Surg. 1984;147 (1): 25-31. Am. J. Surg. (link) - Pubmed citation
- 3. Yu J, Fulcher AS, Turner MA et-al. Normal anatomy and disease processes of the pancreatoduodenal groove: imaging features. AJR Am J Roentgenol. 2004;183 (3): 839-46. AJR Am J Roentgenol (citation) - Pubmed citation