Duodenal Somatostatinoma, also known as duodenal somatostatin-producing neuroendocrine tumor, is related to neurofibromatosis, type i and retinal hemangioblastoma, and has symptoms including diarrhea An important gene associated with Duodenal Somatostatinoma is SST (Somatostatin), and among its related pathways/superpathways are Signal Transduction and Type 2 papillary renal cell carcinoma. Affiliated tissues include pancreas and retina, and related phenotypes are homeostasis/metabolism and skeleton