title: Acute lower gastrointestinal bleeding in Crohn's disease: characteristics of a unique series of 34 patients. Belgian IBD Research Group.
abstract: OBJECTIVE
  Acute lower gastrointestinal bleeding is a rare complication of Crohn's disease, which represents a diagnostic and therapeutic challenge. The aim of this study was to define epidemiological characteristics and therapeutic options of hemorrhagic forms of Crohn's disease.
  
  
  METHODS
  Thirty-four cases of hemorrhagic forms of Crohn's disease were studied retrospectively. Acute lower gastrointestinal hemorrhage was defined as acute rectal bleeding originating in diseased bowel and requiring a transfusion of at least 2 units of red blood cells within 24 h. Upper gastrointestinal tract hemorrhage or anal lesions and postoperative bleeding were excluded.
  
  
  RESULTS
  Mean age at time of hemorrhage was 34.2 +/- 14 yr. Mean duration of disease before the hemorrhage was 5.6 +/- 6 yr. The hemorrhage occurred during a flare up of the disease in 35% of cases. The hemorrhage revealed Crohn's disease in 23.5% of cases. The hemorrhage was more frequent in colonic disease (85%) than in isolated small bowel disease (15%) (p < 0.0001). The origin of bleeding was identified in 65% of cases, by colonoscopy (60%), by angiography (3 patients), or at surgery (1 patient). The bleeding lesion was an ulcer in 95% of cases, most often in the left colon. The treatment was surgical in 20.5% (colectomy in 36%), endoscopical (7 patients, including 5 successes), or medical. Hemorrhage recurred in 12 patients (35%) within a mean time of 3 yr (4 days-8 yr), requiring surgery in 3 cases. No death was observed.
  
  
  CONCLUSIONS
  This study performed in a series characterized by a nonsurgical recruitment, the largest to date, shows that hemorrhagic forms of Crohn's disease may reveal disease in 23.5%, occurs in quiescent Crohn's disease in two-thirds of cases. Given the potential efficacy of endoscopical or medical treatment, as well as the absence of mortality, a conservative approach may be suggested as first-line therapy in the majority of patients.
authors.affiliation: Department of Gastroenterology CHU Sart Tilman, Liège, Belgium.
authors.forename: J
authors.initials: J
authors.lastname: Belaiche
authors.forename: E
authors.initials: E
authors.lastname: Louis
authors.forename: G
authors.initials: G
authors.lastname: D'Haens
authors.forename: M
authors.initials: M
authors.lastname: Cabooter
authors.forename: S
authors.initials: S
authors.lastname: Naegels
authors.forename: M
authors.initials: M
authors.lastname: De Vos
authors.forename: F
authors.initials: F
authors.lastname: Fontaine
authors.forename: P
authors.initials: P
authors.lastname: Schurmans
authors.forename: F
authors.initials: F
authors.lastname: Baert
authors.forename: M
authors.initials: M
authors.lastname: De Reuck
authors.forename: R
authors.initials: R
authors.lastname: Fiasse
authors.forename: J
authors.initials: J
authors.lastname: Holvoet
authors.forename: A
authors.initials: A
authors.lastname: Schmit
authors.forename: M
authors.initials: M
authors.lastname: Van Outryve
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D003424:Crohn Disease / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012007:Rectum; D012189:Retrospective Studies; D012307:Risk Factors