title: A hemangioma of the sigmoid colon mesentery presenting as a retroperitonealtumor: a case report and review.
abstract: Hemangiomas of the gastrointestinal tract and mesentery are uncommon benign vascular lesions. While spontaneous bleeding is the hallmark of the gastrointestinal tumor variant, clinical signs of mesenteric hemangiomas are mostly unspecific. Despite the increasing imaging quality of computerized tomography (CT), in most cases the final diagnosis is established through surgery and histopathologic analysis of a macrobiopsy.We present a case report of a 20-year-old female patient who was admitted with progressive abdominal distension and suffered from persistent abdominal pain for 3 months. A large retroperitoneal tumor mass was detected on the CT scan. Due to radiographic signs of an intraabdominal liposarcoma, an explorative laparotomy was performed revealing a large hemangioma originating from the mesosigmoid.Although rare, gastrointestinal hemangiomas should be kept in mind by oncological visceral surgeons as one differential diagnosis of large intraabdominal tumorous masses, especially in young adults.
authors.forename: Anca-Laura
authors.initials: AL
authors.lastname: Amati
authors.forename: Andreas
authors.initials: A
authors.lastname: Hecker
authors.affiliation: Department of General and Thoracic Surgery, University Hospital of Giessen, Rudolf-Buchheim-Street 7, 35392 Giessen, Germany. Thilo.Schwandner@chiru.med.uni-giessen.de.
authors.forename: Thilo
authors.initials: T
authors.lastname: Schwandner
authors.forename: Hassan
authors.initials: H
authors.lastname: Ghanem
authors.forename: Julia
authors.initials: J
authors.lastname: Holler
authors.forename: Martin
authors.initials: M
authors.lastname: Reichert
authors.forename: Winfried
authors.initials: W
authors.lastname: Padberg
mesh_terms: D000328:Adult; D012809:Colon, Sigmoid / Q000473:pathology* / Q000601:surgery; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006391:Hemangioma / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008643:Mesentery / Q000473:pathology* / Q000601:surgery; D011379:Prognosis; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D055815:Young Adult