Gastrinoma is a very rare tumor leading to gastrin hypersecretion and characterised by Zollinger-Ellisson syndrome (ZES) i.e. severe gastric and duodenal ulceration and profuse diarrhea. This disease can be sporadic or familial within a multiple endocrine neoplasia type 1 (MEN-1) syndrome. Diagnosis is based on hypergastrinemia/hypercholrhydria. Tumors are usually located in the duodeno-pancreas. Preoperative tumor location by CT, echoendoscopy and fibroscopy is not always possible because of the small size of the lesion that are frequently multiple. The aim of gastrinoma treatment is 1/to control the hormonal hypersecretion 2/to remove the neoplasm when it is possible. Surgery is the only chance to cure. Gastrinoma is a slow-growing tumor, and overall survival is good with a median survival above 10years and a 5-year survival above 80 % in surgically resected patients. Recurrence is frequent, a biochemical recurrence is observed in 65 % of cases and morphological recurrence in 40 % of patients at 2years. Metastases are associated with a dismal prognosis.
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