[Some rare diseases of the esophagus (author's transl)].

Cancer excepted all other diseases of the esophagus are rare. Diverticula, benign tumors, perforations and the pathology of the cardia (hiatus hernia, achalasia and esophageal varices) are not studied here. 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.