Inferior—junction of the second and third portion of duodenum,[2] and
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.[3]
^ abcStabile, 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. PMID6691547.