title: Pancreatic Gastrointestinal Stromal Tumor after Upper Gastrointestinal Hemorrhage and Performance of Whipple Procedure: A Case Report and Literature Review.
abstract: BACKGROUND
  Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors in the gastrointestinal system. These types of tumors originate from any part of the tract as well as from the intestine, colon, omentum, mesentery or retroperitoneum. GIST is a rare tumor compared to other types of tumors, accounting for less than 1% of all gastrointestinal tumors.
  
  
  METHODS
  A 56-year-old male patient was hospitalized due to an upper gastrointestinal hemorrhage and the start of abdominal pain on the same day. In the upper gastrointestinal endoscopy that was performed, a solitary mass was found in the second section of the duodenum and a blood vessel (Forrest type 2a) was seen. The extent and location of the mass was detected by abdominal tomography. After hemodynamic recovery, a Whipple procedure was performed without any complications. A subsequent histopathological examination detected a c-kit-positive (CD117) pancreatic GIST with high mitotic index.
  
  
  CONCLUSIONS
  The most effective treatment method for GISTs is surgical resection. In patients with a head of pancreatic GIST, the Whipple procedure can be used more safely and effectively.
authors.affiliation: Department of General Surgery, Kars State Hospital, Kars, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Aziret
authors.affiliation: Department of General Surgery, Adana Numune Training and Research Hospital, Adana, Turkey.
authors.forename: Süleyman
authors.initials: S
authors.lastname: Çetinkünar
authors.affiliation: Department of Pathology, Adana Numune Training and Research Hospital, Adana, Turkey.
authors.forename: Elife
authors.initials: E
authors.lastname: Aktaş
authors.affiliation: Department of General Surgery, Adana Numune Training and Research Hospital, Adana, Turkey.
authors.forename: Oktay
authors.initials: O
authors.lastname: İrkörücü
authors.affiliation: Department of General Surgery, Namık Kemal University, Tekirdağ, Turkey.
authors.forename: İlhan
authors.initials: İ
authors.lastname: Bali
authors.affiliation: Department of General Surgery, Adana Numune Training and Research Hospital, Adana, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Erdem
mesh_terms: D004379:Duodenal Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D046152:Gastrointestinal Stromal Tumors / Q000150:complications / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D016577:Pancreaticoduodenectomy