Risk of anorectal cancer in patients with Crohn's disease and perianal fistula: a nationwide Danish cohort study.
Alaa El-HussunaCamilla Engel LemserAske Thorn IversenKristine Højgaard AllinTine JessPublished in: Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland (2023)
Patients with CD and anorectal fistula have a three-fold increased risk of anorectal cancer compared with the general population. The number needed to surveil to detect one case of anorectal cancer in this patient population was 2160 patients per year in patients with long-standing fistula (>6 years).