title: Late-onset fistula presenting as buttock abscess in two patients with ileo-anal J-pouches for ulcerative colitis.
abstract: Two cases are described of patients who presented with a buttock abscess 3 and 5 years after restorative proctocolectomy for ulcerative colitis. In both the abscess was secondary to a fistula, which was shown on further investigation to be a track traversing the greater sciatic notch. Both patients had had an ileo-anal J-pouch after a proctectomy which had included a mesorectal excision. The possibility that these unusual fistulae might be more common following removal of the mesorectum rather than a close rectal dissection is explored.
authors.affiliation: Colorectal Research Unit, North Hampshire Hospital, Aldermaston Road, Basingstoke RG24 9NA, UK. Brendan.Moran@nhht.nhs.uk
authors.forename: S
authors.initials: S
authors.lastname: Banerjee
authors.forename: M
authors.initials: M
authors.lastname: Farquharson
authors.forename: T D
authors.initials: TD
authors.lastname: Cecil
authors.forename: D
authors.initials: D
authors.lastname: Gold
authors.forename: B J
authors.initials: BJ
authors.lastname: Moran
mesh_terms: D000038:Abscess / Q000000981:diagnostic imaging*; D000328:Adult; D002081:Buttocks; D003093:Colitis, Ulcerative / Q000601:surgery; D039021:Colonic Pouches / Q000009:adverse effects*; D017577:Cutaneous Fistula / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007412:Intestinal Fistula / Q000000981:diagnostic imaging*; D008297:Male; D016737:Proctocolectomy, Restorative / Q000379:methods; D014057:Tomography, X-Ray Computed