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采用腔内放疗配合体外照射治疗食管癌３０例，设对照组５５例，病例具可比性。单纯体外照射组给剂量６５～７０Ｇｙ／６～７周。体外加腔内组，外照５０Ｇｙ／５周，腔内照射１４～２１Ｇｙ／２～３周，一周一次，每次７～８Ｇｙ。考点距源轴中线１０～１２ｍｍ，体外照射４０Ｇｙ后开始腔内照射。结果：体外加腔内照射组治疗结束，食管Ｘ线片的一级率２７％，二级率６０％，三级率１０％，四级率３％。单纯体外照射组其食管Ｘ线片的一至四级率分别为１５％、５８％、１０％和ｌｌ％。吞咽功能明显改善者体外加腔内照射组与单纯体外照射组分别为９６％和７３％。腔内照射的食管反应，明显疼痛占７％（２／３０），轻微疼痛４３％（１３／３０）。无食管穿孔及出血，也无明显食管狭窄。我们认为腔内配合体外照射是提高食管癌放射治疗效果的有效措施。
The use of intraluminal radiotherapy combined with external beam irradiation in the treatment of esophageal cancer in 30 cases, set the control group in 55 cases, the cases are comparable. The doses of 65-70 Gy/6 to 7 weeks were given to the external irradiation group alone. In vitro plus intraluminal group, external illumination 50Gy/5 weeks, intraluminal irradiation 14 ~ 21Gy / 2 ~ 3 weeks, once a week, each time 7 ~ 8Gy. The test site is 10 to 12 mm away from the midline of the source axis. After irradiation of 40 Gy in vitro, intracavity irradiation is started. RESULTS: In vitro plus intraluminal irradiation group ended the treatment, the first-rate rate of esophageal X-ray film was 27%, the second-class rate was 60%, the third-grade rate was 10%, and the fourth-grade rate was 3%. The rate of grade 1 to 4 of the esophageal radiographs was 15%, 58%, 10%, and ll% in the simple external irradiation group. The patients with significant improvement in swallowing function were 96% and 73% in vitro and in the group irradiated with in vitro irradiation alone. The esophageal response to intraluminal irradiation represented 7% (2/30) of pain, and 43% (13/30) of minor pain. There was no esophageal perforation and bleeding, and there was no significant esophageal stricture. We believe that intraluminal irradiation combined with extracorporeal irradiation is an effective measure to improve the efficacy of radiotherapy for esophageal cancer.