<prompt> a female patient of age 57yrs came iwth complaints of burning sensation after eating food ,since 1 month and associated with weight loss of about 4 kg in the past month . later patient complaints of severe loose stools of 8-10 stools .what is most common site of this condition ?head of pancreastail of pancreasbody of the pancreasbetween the head of pancreas and bile duct  <response>: most common site of gastrinoma is passaro triangle or gastrinoma triangle Zollinger-Ellison syndrome I Clinical manifestation hypergastrinaemia caused gastrynoma: gastrin-producing tumor 1 or more of the pancreas, colon, duodenum , peripancreatic lymph nodes, G-cells of the gastric mucosa triangle gastrin I Spread 2.1 cases 500 000 1 60-80 of cases - benign I 1 of gastroduodenal ulcers I Gastrin 100phm1 N, 500-1000phml ref : bailey and love 27th ed 