A review of 42 patients with gastrinoma, who either survived five years or longer or who died during this period of evaluation, was carried out to define the surgical principles which might be combined with the recent trend toward cimetidine therapy. Thirty-four (80%) of the patients had total gastrectomy with an operative mortality rate of 2.3%, and eight patients (20%) had less than total gastrectomy. No tumor was found in six patients with hypcrgastrinemia and an abnormal secretin bolus whose five-year survival rate was 100%. Of the thirty-six patients having tissue proof of gastrinoma, twenty-two (61%) had complete resection of all gross tumor resulting in a 76% five-year survival rate. Fourteen patients had un-resectable tumor or partial resection with a five-year survival rate of 21%. Complete gross tumor resection increased mean survival by six years (p < 0.01), but resulted in persistent eugastrinemia in only two patients. Long-term survival was possible with a combination of vagotomy, lesser gastric procedures, tumor resection, and cimetidine, seven of eight patients living more than five years. Surgical management of gastrinoma should be directed toward aggressive tumor resection and vagotomy, with reliance on cimetidine therapy postoperativcly to control the gastric hypcrsecretion. Total gastrectomy should be reserved for cimetidine failures and those who do not wish to take cimetidine for the rest of their lives.