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由于表浅食管癌位于食管粘膜内,腔内近距离治疗(IBT)的剂量分布均匀,可能改善临床疗效。日本大阪大学于1988年8月～1996年8月年收治食管表浅鳞癌21例,男18例,女3例,平均年龄67岁(51～85岁)。8例单纯外照射(单放组),先用6～15MeV X线,前后野相对平行照射肿瘤上下缘至少3cm,宽6～8cm,剂量40～46Gy/1.8或2.0Gy/次,后用旋转或斜野追加照射10～20Gy,2Gy/次,包肿
Since superficial esophageal cancer is located in the esophageal mucosa, the dose distribution of brachytherapy (IBT) within the cavity is evenly distributed and may improve clinical efficacy. Osaka University in Japan from August 1988 to August 1996 received 21 cases of superficial esophageal squamous cell carcinoma, 18 males and 3 females, with an average age of 67 years (51 to 85 years old). 8 cases of simple external radiation (single-release group), first with 6 ~ 15MeV X-ray, before and after the field relative to the upper and lower radiation parallel to the edge of at least 3cm, width 6 ~ 8cm, dose 40 ~ 46Gy/1.8 or 2.0Gy / time, after the rotation Or oblique field additional irradiation 10 ~ 20Gy, 2Gy / times, enucleation