The hormone gastrin is a major regulator of acid secretion and may control up to ... 69 In addition, the prevalence of carcinoid tumors has increased as much as ninefold in the past three decades ...

The excised duodenal mass was 2.9 cm in diameter and was diagnosed as a neuroendocrine tumor with immunohistochemistry positive for gastrin expression (Figure 1). The hemicolectomy specimen ...

Although intuitively, complete surgical removal of the gastrinoma would eliminate the source of excessive gastrin release and ... determinants are preoperative tumor localization and resectability.