title: Posterior mediastinal mass.
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging; D008875:Middle Aged; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging*; D013904:Thoracic Vertebrae; D014394:Tuberculosis, Osteoarticular / Q000000981:diagnostic imaging*