类癌是阑尾最常见的肿瘤,多在阑尾切除后经病理检查发现,是否应行右半结肠切除的问题尚有争论.近年来随着病例的积累,大多数学者认为对直径小于1cm的类癌,仅行单纯阑尾切除已足够,直径大于2cm者需加右半结局切除术,直径在1～2cm者应根据阑尾系腹及浆腹下淋巴管是否受累等综合考虑. Carcinoid tumors are the most common cancers of the appendix. They are mostly found in pathological examinations after appendectomy. Whether the right hemicolectomy should be performed is still controversial. In recent years, with the accumulation of cases, most scholars believe that the diameter is less than 1cm. Cancer, only simple appendectomy is sufficient, diameter greater than 2cm need to add the right half of the resection, diameter 1 ~ 2cm should be based on the appendix of the abdomen and pulp lymph nodes are involved in comprehensive consideration.