炎症性肠病(inflammatory bowel disease,IBD)是一种原因未明、累及消化道的非特异性炎症性疾病,发病率逐年增加。IBD病人发生结肠直肠癌(colorectal cancer,CRC)并不罕见。最近证实IBD病人不仅发生CRC的风险增加,基于长期免疫抑制治疗和潜在的炎症状态,其发生肠外恶性肿瘤的 Inflammatory bowel disease (IBD) is a nonspecific inflammatory disease with unknown origin and involving the digestive tract, and its incidence is increasing year by year. It is not uncommon for IBD patients to develop colorectal cancer (CRC). IBD patients have recently been shown to not only have an increased risk of developing CRC, but based on long-term immunosuppressive therapy and potential inflammatory conditions that develop in patients with extraintestinal malignant tumors