Most impoant investigation for diagnosis of Zollinger Ellison syndrome is: March 2013
Ans. B i.e. Secretin injection test Gastrinoma/ ZES MC site: Duodenum Non beta cell tumour, Neuro-endocrine tumour/ NET secreting: Gastrin Most impoant investigation: Secretin injection test DOC for ZES: Proton pump inhibitors Hepatic metastasis occurs (33%)
Ca2+ infusion test
Secretin injection test
ACTH stimulation test
Steroid assay