Risk of Cancer in Patients With Inflammatory Bowel Diseases: AÂ Nationwide Population-based Cohort Study With 30 Years of Follow-up Evaluation

Patients with IBD, particularly CD, are at increased risk for gastrointestinal and extraintestinal malignancies. The relative risk of gastrointestinal malignancy has decreased since 1978, without a concomitant increase in the risk of nongastrointestinal malignancy.