Duodenal Gastrin-Producing Neuroendocrine Tumor

**Semantic type:** Neoplastic Process

**Definition:** A gastrin-producing neuroendocrine tumor that arises from the duodenum. It is characterized by the presence of uniform cells that form pseudorosettes. The neoplastic cells have uniform nuclei and small amount of eosinophilic cytoplasm.

**Synonyms:** - Duodenal G-Cell Gastrin Producing Tumor - Duodenal Gastrin-Producing NET - Duodenal Gastrinoma - Gastrin Producing Tumor of Duodenum - Gastrin Producing Tumor of the Duodenum - Gastrinoma of Duodenum - Gastrinoma of the Duodenum