Small Intestinal Gastrin-Producing Neuroendocrine Tumor

**Semantic type:** Neoplastic Process

**Definition:** A gastrin-producing neuroendocrine tumor that arises from the small intestine. 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:** - Small Intestinal G Cell NET - Small Intestinal Gastrin-Producing NET - Small Intestinal Gastrinoma