title: Long-term outcome of mesocolic and pelvic diverticular abscesses of the left colon: a prospective study of 73 cases.
abstract: OBJECTIVE
  The aim of of this study was to evaluate prospectively the long-term outcome of mesocolic and pelvic diverticular abscesses of the left colon.
  
  
  METHODS
  Between October 1986 and October 1997, a total of 465 patients urgently admitted to our hospital with a suspected diagnosis of acute left-sided colonic diverticulitis had a CT scan. Of 76 patients (17 percent) who had an associated mesocolic or pelvic abscess, 3 were lost to follow-up. The remaining 73 patients (45 with a mesocolic abscess and 28 with a pelvic abscess) were followed for a median of 43 months.
  
  
  RESULTS
  of the 45 patients with a mesocolic abscess, 7 (15 percent) required surgery during their first hospitalization versus 11 (39 percent) of the 28 patients with a pelvic abscess (P = 0.04). At the end of follow-up, 22 (58 percent) of the 38 patients with a mesocolic abscess who had successful conservative treatment during their first hospitalization did not need surgical treatment vs. 8 (47 percent) of the 17 who had a pelvic abscess. Altogether, 51 percent of the patients with a mesocolic abscess had surgical treatment versus 71 percent of those with a pelvic abscess (P = 0.09).
  
  
  CONCLUSIONS
  Considering the poor outcome of pelvic abscess associated with acute left-sided colonic diverticulitis, percutaneous drainage followed by secondary colectomy seems justified. Mesocolic abscess by itself is not an absolute indication for colectomy.
authors.affiliation: Clinic of Digestive Surgery, University Hospital of Geneva, Geneva, Switzerland. pambrosetti@gntmed.ch
authors.forename: Patrick
authors.initials: P
authors.lastname: Ambrosetti
authors.forename: Roland
authors.initials: R
authors.lastname: Chautems
authors.forename: Claudio
authors.initials: C
authors.lastname: Soravia
authors.forename: Nyali
authors.initials: N
authors.lastname: Peiris-Waser
authors.forename: François
authors.initials: F
authors.lastname: Terrier
mesh_terms: D000038:Abscess / Q000382:microbiology / Q000473:pathology* / Q000601:surgery; D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003082:Colectomy; D003108:Colonic Diseases / Q000473:pathology*; D004239:Diverticulitis, Colonic / Q000150:complications* / Q000382:microbiology* / Q000473:pathology; D005260:Female; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016896:Treatment Outcome