局部晚期食管癌三维适形放疗疗效观察

• 作 者: 陈祥明 赵大奇
• 机 构: 泰安市中心医院肿瘤科,
• 出 处: 社区医学杂志
• 发表日期: 2009年20期
• 关键词: 晚期食管癌 三维适形放疗 化疗综合治疗 周围正常组织 靶区 radiotherapy 生存率 局部控制率 照射范围 急性放射性肺炎

食管癌确诊时约2/3的患者已处于局部晚期或远处转移,放射治疗或放化疗综合治疗是其主要治疗手段,但食管癌常规放疗的疗效不明显,5年生存率在8%～10%,失败的主要原因是肿瘤局部未控及复发。三维适形放射治疗(3-dimensional conformal radiotherapy,3D-CRT)是20世纪90年代以来发展的新技术,它在靶区确定、剂量分布均匀性、减少靶区周围正常组织受照容积及剂量等

Approximately two-thirds of esophageal cancer patients have been diagnosed with advanced or distant metastasis. Radiotherapy or radiotherapy and chemotherapy combined therapy is the main treatment, but the efficacy of conventional radiotherapy of esophageal cancer is not obvious, 5-year survival rate of 8% 10%, the main reason for the failure of tumor uncontrolled and recurrence. Three-dimensional conformal radiotherapy (3D-CRT) is a new technique developed since the 1990s, which has the advantages of definite target area, uniformity of dose distribution, reducing the volume and dose of normal tissue around the target area, etc.