Anal carcinoma in inflammatory bowel disease

  title={Anal carcinoma in inflammatory bowel disease},
  author={Morten Frisch and Christoffer Johansen},
  journal={British Journal of Cancer},
  pages={89 - 90}
We followed 9602 patients with Crohn’s disease or ulcerative colitis for anal squamous cell carcinoma for up to 18 years. No significant increase was observed: two cases occurred vs 1.3 expected during 99 229 person-years of observation, (standardized incidence ratio = 1.6; 95 confidence interval: 0.2–5.7). Anal squamous cell carcinoma is rare even in… CONTINUE READING