[The method of some particular positional examination of the digestive tract. Single barium double contrast radiography of a lower esophageal "tumor"].
D001018:Aortic Diseases / Q000000981:diagnostic imaging; D001161:Arteriosclerosis / Q000000981:diagnostic imaging; D001466:Barium Sulfate; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging*; D004947:Esophagus / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography; D013679:Technology, Radiologic
D001466:Barium Sulfate