title: [GI hemorrhage with fulminant shock induced by jejunal gastrointestinal stromal tumor (GIST) coincident with duodenal neuroendocrine carcinoma (NET) + neurofibromatosis (NF) -- case report and review of the literature].
abstract: BACKGROUND
  The incidence of neuroendocrine tumors (NET) and of gastrointestinal stromal tumors (GIST) is 0.5 and 1 - 2 in 100,000; the prevalence of neurofibromatosis is 1 in 3000 live births in Western countries.
  
  
  METHODS
  A 43-year-old white woman with a six-month history of meleana, paleness, vertigo and fatigue was not referred to any gastrointestinal doctor for diagnostic work-up. Finally, she collapsed and was admitted to hospital because of an acute gastrointestinal bleeding. Endoscopically the source of bleeding could not be localized while blood in the duodenum and proximal jejunum was demonstrable. The source of bleeding could not be identified by endoscopy, CT scan or angiography. The patient developed a fulminant gastrointestinal hemorrhage with hemoglobin levels below 3.5 g %. An emergency laparotomy and pylorus-preventing Whipple operation was performed. Pathological studies showed a GIST with 3.5 cm diameter of the proximal jejunum which was the source of bleeding. Coincidentally a neuroendocrine carcinoma of the duodenum was found.
  
  
  CONCLUSIONS
  This case is the first presentation of the coincidence of a neuroendocrine carcinoma of the duodenum with a jejunal bleeding gastrointestinal stromal tumor in neurofibromatosis type1 which led to hemorrhagic shock. In neurofibromatosis -- even if non-symptomatic -- the increased incidence of tumor needs to be considered.
authors.affiliation: Klinik für Chirurgie I, Universitätsklinikum Ulm. kramer.k@web.de
authors.forename: K
authors.initials: K
authors.lastname: Kramer
authors.forename: M
authors.initials: M
authors.lastname: Siech
authors.forename: J
authors.initials: J
authors.lastname: Sträter
authors.forename: A J
authors.initials: AJ
authors.lastname: Aschoff
authors.forename: D
authors.initials: D
authors.lastname: Henne-Bruns
mesh_terms: D000328:Adult; D000970:Antineoplastic Agents / Q000627:therapeutic use; D001549:Benzamides; D018278:Carcinoma, Neuroendocrine / Q000150:complications* / Q000473:pathology / Q000601:surgery; D017321:Clinical Trials, Phase I as Topic; D017322:Clinical Trials, Phase II as Topic; D004379:Duodenal Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D004386:Duodenum / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D046152:Gastrointestinal Stromal Tumors / Q000150:complications* / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000401:mortality / Q000473:pathology / Q000601:surgery; D006801:Humans; D000068877:Imatinib Mesylate; D007150:Immunohistochemistry; D007580:Jejunal Neoplasms / Q000150:complications* / Q000601:surgery; D009456:Neurofibromatosis 1 / Q000150:complications*; D010879:Piperazines / Q000627:therapeutic use; D047428:Protein Kinase Inhibitors / Q000627:therapeutic use; D011743:Pyrimidines / Q000627:therapeutic use; D012771:Shock, Hemorrhagic / Q000209:etiology*; D013997:Time Factors; D036542:Tomography, Spiral Computed; D016896:Treatment Outcome
chemical_list: D000970:Antineoplastic Agents; D001549:Benzamides; D010879:Piperazines; D047428:Protein Kinase Inhibitors; D011743:Pyrimidines; D000068877:Imatinib Mesylate