Trachea Tracheo-esophageal fistula Zenker diverticulum Traction diverticulum Web (Plummer-Vinson syndrome) Stricture Scleroderma Reflux esophagitis Mallory-Weiss syndrome(laceration) Diaphragm Varices Stomach 食道结构及非肿瘤性疾病 Non-neoplastic disorders of the esophagus. 食道结构及非肿瘤性疾病