食管贲门失弛症在食管良性病变中占首位[1] ,患者常因吞咽困难、呕吐而严重影响生活、工作和学习 ,儿童时期还能引起营养不良、发育滞后。传统治疗方法是外科手术切断贲门环形肌纤维。随着介入放射学的发展 ,用扩张术治疗贲门失弛症已是当前简便、安全、有效的方法[2～ 3 ] ,我 Esophageal and cardiac achalasia account for the highest proportion of benign esophageal lesions [1]. Patients often have difficulty in living and working and learning due to dysphagia and vomiting. Children can also cause malnutrition and lag in development. The traditional treatment is surgery to cut cardia ring muscle fibers. With the development of interventional radiology, the treatment of cardia achalasia with dilatation has been the current simple, safe and effective method [2 ~ 3], I