放射治疗是食管癌治疗的主要手段之一,由于食管的组织结构和自身生物学等方面特点,相当一部分食管癌患者不宜手术或不愿手术而接受放射治疗。但多年来食管癌的放射治疗效果不理想,5年生存率不足10%,失败原因主要是局部 Radiation therapy is one of the main means of esophageal cancer treatment, due to the esophageal tissue structure and biological characteristics of their own, a considerable portion of patients with esophageal cancer should not be surgery or reluctance to accept radiation therapy. However, over the years the radiotherapy of esophageal cancer is not satisfactory, 5-year survival rate of less than 10%, the main reason for failure is local