title: Roentgenogram of the month. Thickened posterior tracheal stripe in a 50-year-old man.
mesh_terms: D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013679:Technology, Radiologic; D014132:Trachea / Q000000981:diagnostic imaging*