Colorectal surgery included right colectomy in 5 cases, transverse colectomy in 4 cases, left colectomy in 7 cases, Dixon procedure in 12 cases and miles procedure in 3 cases.

• 原发灶行右半结肠切除5例,横结肠切除4例,左半结肠切除7例,Dixon术12例,Miles术3例。