[Radiologic diagnosis of multiple foci carcinoma of the esophagus (report of four cases)].
D000328:Adult; D000368:Aged; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging*; D011859:Radiography