Abstract
Inflammatory bowel disease (IBD), which includes ulcerative colitis (UC) and Crohn's disease (CD), is associated with various complications during its chronic remittent course. In the long-term duration of the disease process, colorectal cancer (CRC) in UC and CD and small intestinal cancer in CD are the most serious and life-threatening hazards. Evaluation of the incidence, risk factors and confounding factors have been considered with regard to CRC and / or intestinal cancer and surveillance methods have been established to lessen the burden of IBD patients. In this review recent epidemiological trends and risk factors, especially the trend of CRC in Japanese with IBD are presented and discussed. Finally, an endoscopic surveillance program should be indicated for those with UC and UD in Japan.
