作者对177例直肠和直肠乙状结肠癌术后患者作了临床及CT的随访研究。术前接受放疗108例,术后放疗47例,其余未经放射治疗。术后临床随访5年。CT检查在术后6～9个月开始,间隔6～9个月。作两次CT检查者98例,三次者48例。CT扫描范围从会阴或直肠至第4腰椎平面,均用增强检查。并口服造影剂显示小肠。CT发现肿块或临床上有局部复发症状者经CT定位穿刺活检或手术活检。作者见到,第1次CT检查发现盆腔内有肿 The authors performed clinical and CT follow-up studies on 177 patients with rectal and rectal sigmoid colon cancer. 108 patients received radiotherapy before surgery, 47 received postoperative radiotherapy, and the rest did not receive radiotherapy. Clinical follow-up after 5 years. The CT examination began 6 to 9 months after surgery, with an interval of 6 to 9 months. 98 CT scans were performed twice, and 48 were performed three times. The CT scan ranged from the perineum or rectum to the 4th lumbar plane and was enhanced. And oral contrast agent shows the small intestine. Patients with CT or local clinical recurrence symptoms were found to have CT biopsy or biopsy. The authors saw that the first CT examination revealed swelling in the pelvis