Anovaginal and rectovaginal fistula in patients with Crohn's disease

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Abstract
Between 1971 and 1991, details of 67 women with perianal Crohn's disease were recorded prospectively using the Cardiff classification. Two groups were identified according to the presence (n = 29) or absence (n = 38) of anorectal Crohn's fistula involving the vagina. Patients in both groups were of a similar age and had had Crohn's disease for a similar period before diagnosis of perianal involvement. The incidence of associated perianal lesions, superficial ulcers, cavitating ulcers, other fistulas and strictures was not significantly different between the two groups. A greater proportion of patients with anorectal-vaginal fistulation (n = 15) had distal intestinal Crohn's disease (rectal or contiguous colorectal) compared with women with no vaginal fistulation (n = 14). A range of therapies was used to manage women with perianal Crohn's disease, from local surgery to a defunctioning stoma and/or proctectomy. Only 13 of 38 women with perianal Crohn's disease but no vaginal fistula required a defunctioning stoma or proctectomy, whereas 18 of 29 with anorectal-vaginal fistulation underwent these procedures (P ≤ 0.05). A vaginal fistula has a considerable adverse effect on the outcome of perianal Crohn's disease.

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