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单纯放射线治疗食道癌的适应症多数是不能手术和高龄的患者。日本兵库县医院统计18年间单纯放疗存活5年以上的6例患者,年龄从59岁到86岁,男女性各3例。作者分析了这6例患者放疗的剂量、范围和治疗经过。①照射范围:以阴影缺损上下端各1—2cm 作照射野为宜。这是因为:照射野过大易引起食道炎、肺炎等疾患;即使行全胸照射亦不能提高存活率,食道癌死因多为局部复发所致。
The indications for radiotherapy alone for esophageal cancer are mostly inoperable and elderly patients. In the Hyogo Prefecture Hospital of Japan, there were 6 patients who survived radiotherapy alone for more than 5 years during the 18 years, aged from 59 to 86 years and 3 males and 3 females. The authors analyzed the dose, range, and course of treatment for these 6 patients. 1 Irradiation range: It is advisable to use 1-2 cm above and below the shadow defect as irradiation field. This is because: the irradiation field is too large to cause esophagitis, pneumonia and other diseases; even if the whole chest irradiation can not improve the survival rate, the cause of esophageal cancer is mostly due to local recurrence.