label: Duodenal Gastrin-Producing Neuroendocrine Tumor
label_lc: duodenal gastrin-producing neuroendocrine tumor
description: "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."