title: Duodenal somatostatinoma: a case report and review of the literature.
abstract: BACKGROUND
  About 70% of well-differentiated endocrine tumors arise from the gastrointestinal tract. Duodenal well-differentiated endocrine tumors account for only 2.6% of all neuroendocrine tumors. Following the first two case reports of somatostatin-secreting tumors in 1977, fewer than 200 cases of somatostatinoma have been reported. These tumors of the duodenum are usually silent and asymptomatic, but can cause gastrointestinal symptoms. Depending on the localization of the tumor, multiple surgical procedures can be performed, ranging from local resection to pancreaticoduodenectomy.
  
  
  METHODS
  Here, we report a case of a submucosal duodenal mass in a 42-year-old Turkish White man presenting with nausea, vomiting, fatigue and abdominal pain. The treatment decision of pancreaticoduodenectomy made preoperatively was later altered to intraoperative removal via local resection with sphincteroplasty.
  
  
  CONCLUSIONS
  Tumors of the periampullary region are considered highly malignant, and the Whipple operation is usually the only procedural treatment. In the current case, we decided not to perform pancreaticoduodenectomy but to excise the mass intraoperatively, and consequently avoided unnecessary resection of the pancreas and anastomosis to undilated hepatic and pancreatic ducts. This protective strategy prevented duodenum- and pancreas-related morbidity.
authors.affiliation: General Surgery Department, Istanbul Education and Research Hospital, Org, Abdurrahman Nafiz Gurman Street, Fatih Istanbul, 34096, Turkey. oguzcoach@yahoo.com.
authors.forename: Oguz
authors.initials: O
authors.lastname: Koc
authors.forename: Yigit
authors.initials: Y
authors.lastname: Duzkoylu
authors.forename: Yavuz Selim
authors.initials: YS
authors.lastname: Sari
authors.forename: Hasan
authors.initials: H
authors.lastname: Bektas
authors.forename: Gungor
authors.initials: G
authors.lastname: Uzum
authors.forename: Vahit
authors.initials: V
authors.lastname: Tunali
authors.forename: Esra
authors.initials: E
authors.lastname: Pasaoglu