The significance of webs in the hypopharynx and upper esophagus.
D000368:Aged; D000740:Anemia / Q000209:etiology; D003680:Deglutition Disorders / Q000209:etiology; D004947:Esophagus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010614:Pharynx / Q000000981:diagnostic imaging*; D011859:Radiography