The gastrinoma triangle (or 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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