临床资料患者,女,45岁,因体检发现食管下段占位1个月余入院。无进食梗阻、反酸、烧心、呕吐。超声内镜示:食管距门齿33~36 cm齿状线上缘,见一马蹄状隆起,表面光滑,中央无溃疡形成,无黏膜桥形成,内镜腔内分型C3/5,活动度:Ⅱ度。超声见:病灶呈不规则形,向腔内突出,边界清楚,内部回声均匀,起源于固有肌层。食管造影示:食管下段(约T10-12椎体水平)管壁僵硬,管腔不均匀性狭窄, Clinical data Patients, female, 45 years old, due to physical examination found lower esophageal space more than 1 month admitted. No obstruction, acid reflux, heartburn, vomiting. Ultrasound endoscopy: esophageal incisors 33 ~ 36 cm on the edge of the dentate line, see a horseshoe-like bulge, smooth surface, the central non-ulcer formation, mucosal bridge formation, endoscopic cavity classification C3 / 5, activity: Ⅱ degree. See ultrasound: lesions were irregular shape, protruding to the cavity, the boundary is clear, the internal echo uniform, originated in the muscularis propria. Esophageal angiography showed: the lower esophagus (about T10-12 vertebral level) stiff wall, narrow lumen non-uniformity,