作者报道46例属束缚(tethered)或固定的直肠癌术前同时用5-FU、MMC及盆部放疗的经验。男37例,女9例,年龄32～82岁,中数63岁。均判断为不能切除者,所有肿瘤均位于肛门缘15cm内,63％在直肠下部,临床检查肿瘤均与邻近结构粘连。30例为束缚组肿瘤,仅在某一方向有些活动;16例全固定。46例中15例术前作了盆部CT,12例作了US,直肠内US未成功(管腔被肿瘤梗阻),46例的胸片与肝US The authors reported 46 cases of tethered or fixed rectal cancer with preoperative 5-FU, MMC, and pelvic radiotherapy. There were 37 males and 9 females, aged 32-82 years old and 63 years old. All patients were judged to be unresectable, all tumors were located within 15cm of the anal verge, 63% in the lower rectum, and the clinical examination of tumors were all adhered to adjacent structures. Thirty patients were bound group tumors and had some activity in only one direction; 16 cases were all fixed. Of the 46 cases, 15 cases were performed preoperatively with CT in the pelvis, 12 in the US, US in the rectum unsuccessfully (the lumen was obstructed by the tumor), and the chest radiograph and liver in 46 cases.