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麻省综合医院1978.5——1980.2用外照射加术中照射方式治疗了32例局部晚期的结直肠癌。其中7例为原手术后有残存癌,16例因肿瘤固定临床考虑不能手术切除,9例为复发癌不能手术切除。另有18例原计划行术中照射,因发现远地转移及局部肿瘤广泛等原因未实行。此32例外照射方式基本相同,用10或25Mev 光子线,先前、后、左、右四野平行对穿照射。肿瘤或瘤床、髋内和骶前淋巴结区照射45Gy/5周/25次。有时射野包入髂外淋巴结区。野上界在L_5下1/2—1/3处,下界根根手术类型
Massachusetts General Hospital 1978.5-1980.2 treated 32 cases of locally advanced colorectal cancer with external irradiation plus intraoperative irradiation. Among them, 7 cases had residual cancer after the original operation, 16 cases could not be surgically removed due to clinical considerations of tumor fixation, and 9 cases could not be surgically removed for recurrent cancer. Another 18 cases were originally scheduled for intraoperative radiation and were not implemented due to the discovery of distant metastases and extensive local tumors. This 32-point exception irradiation method is basically the same, with 10 or 25 MeV photonic lines, the front, rear, left, and right fields in parallel. Tumor or tumor bed, intra-humeral and presacral lymph node areas were irradiated 45 Gy/5 weeks/25 times. Sometimes the field is packaged into the external lymph node area. Wild upper boundary below L_5 1/2-1/3, lower boundary radical operation type