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目的:观察食管癌在低氧放疗中的放疗副作用和近、远期效果。方法:食管癌患者72 例,以配对原则随机分为低氧组和单照组,用6 0 Co γ线照射,低氧放疗方法为吸入10 .5 % 的低氧混合气2 分钟后开始放疗,5 分钟内完成治疗。结果:放疗后体重增加低氧组为2 .3kg ,单照组0 .19kg( P< 0 .05) 。治疗后6 个月、1 年、3 年、5 年生存率低氧组是86 % 、56 % 、33 % 、11 % ,单照组是69 % 、50 % 、25 % 、5 .5 % ( P> 0 .05) 。死亡32 例,死因为低氧组局部复发14 例,远处转移8 例,局部复发+ 远处转移者8 例,其它2 例;单照组分别为:16 例,10 例,8 例,0 例( P> 0 .05) 。结论:低氧放疗能够有效地减轻食管癌放疗中副作用,对食管癌放疗后远期疗效没有影响。
Objective: To observe the radiotherapy side effects and short- and long-term effects of esophageal cancer in hypoxia radiotherapy. Methods: Seventy-two patients with esophageal cancer were randomly divided into hypoxia group and single-illumination group according to the pairing principle. They were irradiated with 60 Co γ-rays and inhaled by hypoxia radiotherapy. 5 % of the hypoxic mixture started radiotherapy 2 minutes later and completed treatment within 5 minutes. RESULTS: The weight gain after hypothermia in the hypoxic group was 2. 3kg, single shot group 0. 19kg (P<0.05). After 6 months, 1 year, 3 years and 5 years, the survival rate in the hypoxic group was 86%, 56%, 33%, 11%, while the single phototherapy group was 69%, 50%, 25%, 5. 5 % (P> 0 .05). Thirty-two patients died because of local recurrence in 14 cases of hypoxia, 8 cases of distant metastases, 8 cases of local recurrence + distant metastases, and 2 cases of other cases; 16 cases, 10 cases, 8 cases, 0 Example (P> 0 .05). Conclusion: Hypoxia radiotherapy can effectively reduce the side effects of esophageal cancer radiotherapy, and has no effect on the long-term efficacy of esophageal cancer after radiotherapy.