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Passaro's triangle

From Wikipedia, the free encyclopedia

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Passaro's triangle or gastrinoma triangle is a presumptive region in the abdomen between three points:

  1. Superior—porta hepatis[1] (earlier—confluence of the cystic and common bile duct),[2]
  2. Inferior—junction of the second and third portion of duodenum,[2] and
  3. Medial—junction of the neck and body of the pancreas[2]

The importance of the triangle is because it is known as the source of origin of most gastrinomas.[3][4] However, primary gastrinomas can also occur in the liver or extrahepatic bile ducts, commonly with metastasis to the local lymph nodes.[5]

The appellation is due to Edward Peter Passaro, an American surgeon, who explained it for the first time in the year 1984.[3] [6]

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