贲门失弛缓症是食管下段神经肌肉功能障碍所致的一种疾病,其特点是食管下段括约肌(LES)呈失弛缓状态,食物不能顺利通过而滞留于食管内,从而逐渐引起食管的扩张、肥厚、扭曲等改变,临床上表现为吞咽困难、胸骨后疼痛、食物反流以及因食物反流误吸入气管所致咳嗽、肺部感染等症状 Cardiac achalasia is a disease caused by neuromuscular dysfunction in the lower esophagus. It is characterized by an ameliorating esophageal sphincter (LES), which can not pass through the esophagus smoothly, thus gradually causing esophageal dilatation and hypertrophy , Distortion and other changes in clinical manifestations of dysphagia, sternal pain, food reflux and due to food reflux due to inhalation of the trachea caused by cough, lung infection and other symptoms