[X-ray observation of the pharyngo-esophageal junction].
D000368:Aged; D004935:Esophageal Diseases / Q000000981:diagnostic imaging; D004947:Esophagus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010614:Pharynx / Q000000981:diagnostic imaging; D011859:Radiography