we took into consideration the following diseases only : spasm of the cricopharyngeal muscle , plummer-vinson or kelly-paterson syndrome , cervical osteophytosis , dysphagia lusoria , benign and malignant mediastinal lymphatic nodes , schatzki ring of the lower esophagus and esophageal duplications .
C0014876
esophagus
C0266135
esophageal duplications