["Saber-sheath" intrathoracic trachea].
D000328:Adult; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000473:pathology; D014132:Trachea / Q000473:pathology*; D014133:Tracheal Diseases / Q000209:etiology / Q000473:pathology* / Q000503:physiopathology