title: The occult thymoma: radiological and radioisotopic aids to diagnosis.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D009157:Myasthenia Gravis / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D010690:Phlebography; D011012:Pneumomediastinum, Diagnostic; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012643:Selenium; D013934:Thymectomy; D013945:Thymoma / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D013950:Thymus Gland / Q000098:blood supply; D013953:Thymus Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging*
chemical_list: D011868:Radioisotopes; D012643:Selenium