Esophagogastric region and its rings.
D003680:Deglutition Disorders / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D004935:Esophageal Diseases / Q000000981:diagnostic imaging; D004940:Esophageal Stenosis / Q000000981:diagnostic imaging; D004943:Esophagogastric Junction / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D005753:Gastric Mucosa; D006801:Humans; D011859:Radiography