[Primary tumor of the trachea (X-ray analysis of 20 cases) (author's transl)].
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014132:Trachea / Q000000981:diagnostic imaging; D014134:Tracheal Neoplasms / Q000000981:diagnostic imaging*