title: Roentgenogram of the month: thoracic mass and pleuritic chest pain.
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D011859:Radiography; D012272:Ribs / Q000000981:diagnostic imaging; D012512:Sarcoma, Ewing / Q000000981:diagnostic imaging*; D013899:Thoracic Neoplasms / Q000000981:diagnostic imaging*