title: Retroperitoneal fibrosis mimicking a rectal tumor: report of a case.
abstract: OBJECTIVE
  The study contained herein was undertaken to report an original case of retroperitoneal fibrosis that resembled a rectal tumor both symptomatically and radiologically.
  
  
  METHODS
  Reported is a case of retrorectal fibrosis with a brief literature review of the topic.
  
  
  RESULTS
  Although many forms of retroperitoneal fibrosis have been reported, extension below the pelvic rim is very unusual. Compression of the rectum and right ureter, with constipation as a chief complaint, made this case presentation unusual. Although computerized tomographic findings and needle biopsies supported the diagnosis of retroperitoneal fibrosis, an exploratory laparotomy was necessary to rule out a malignancy and to release the ureter.
  
  
  CONCLUSIONS
  A fibrotic mass involving the retrorectal region may mimic a rectal tumor. To reach a final diagnosis, an exploratory laparotomy may be necessary, despite sophisticated evaluation techniques, because it is difficult to differentiate whether the mass is malignant.
authors.affiliation: Department of General Surgery, Dokuz Eylül University Medical Faculty, Izmir, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Haciyanli
authors.forename: N
authors.initials: N
authors.lastname: Erkan
authors.forename: B
authors.initials: B
authors.lastname: Elverdi
authors.forename: G
authors.initials: G
authors.lastname: Avci
authors.forename: M
authors.initials: M
authors.lastname: Füzün
authors.forename: O
authors.initials: O
authors.lastname: Dicle
mesh_terms: D001466:Barium Sulfate; D001706:Biopsy; D003937:Diagnosis, Differential; D004733:Enema; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D012185:Retroperitoneal Fibrosis / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed
chemical_list: D001466:Barium Sulfate