[X-ray diagnosis of early esophageal neoplasms--elevated and depressed lesions].
D000368:Aged; D002278:Carcinoma in Situ / Q000000981:diagnostic imaging*; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging*; D004947:Esophagus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007971:Leukoplakia / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography