Xeroradiography of the pharynx.
D001466:Barium Sulfate; D004825:Epiglottis / Q000000981:diagnostic imaging; D006801:Humans; D009303:Nasopharyngeal Neoplasms / Q000000981:diagnostic imaging; D010610:Pharyngeal Neoplasms / Q000000981:diagnostic imaging*; D014062:Tongue Neoplasms / Q000000981:diagnostic imaging; D014986:Xeroradiography
D001466:Barium Sulfate