自从1976年以来,Thomas Jefferson 大学医院收治了活检证实的直肠腺癌104例,所有患者的病变局限于盆腔并能手术切除。在手术当天或前一天照射500rad/单次,前后对穿野,照射野包括全盆腔(15×15cm)。15例病变广泛(D 期)局部病变广泛或有肝转移的患者作了姑息性治疗。29例A 或B_1期患者不作术后放疗,60例B_2、C_1、C_2期 Since 1976, Thomas Jefferson University Hospital has treated 104 biopsy-proven rectal adenocarcinomas. All patients have lesions confined to the pelvis and can be surgically resected. On the day of surgery or the day before the irradiation 500rad/single, front and rear to wear field, radiation field including the entire pelvic cavity (15 × 15cm). Palliative treatment was performed in 15 patients with extensive lesions (D stage) with extensive local lesions or liver metastases. 29 patients with stage A or B 1 had no postoperative radiotherapy and 60 patients with B 2 ,C 1 ,C 2