近距离放疗在食管癌治疗中的应用

食管癌是一种常见的消化系统肿瘤，手术和放疗是其最主要的根治性治疗方案。放疗对各期食管癌均具有较好的疗效，其中，外照射放疗是主要方法，近距离放疗（BT）作为放疗的分支，对食管癌的治疗具有辅助作用。由于食管是人体的自然管腔，食管局部肿瘤可采用腔内BT进行治疗；复发转移病灶可采用组织间插植BT进行治疗。笔者从BT技术、施源器、靶区勾画以及剂量方案等方面对BT在食管癌治疗中的应用进行综述。

Application of brachytherapy in the treatment of esophageal cancer

Esophageal cancer is a common digestive system tumor. Surgery and radiotherapy are the most important radical treatment options for esophageal cancer. Radiotherapy has good curative effects for all stages of esophageal cancer, and external beam radiotherapy is the main method. Brachytherapy (BT), as a branch of radiotherapy, plays an auxiliary role in the treatment of esophageal cancer. Since the esophagus is the natural lumen of human body, intracavitary BT is used to treat local esophageal tumors; interstitial BT is used to treat recurrent metastatic lesions. This paper reviews the application of BT in the treatment of esophageal cancer from the aspects of technique, source applicator, target area delineation and dosage regimen.