[Potential spaces of superior mediastinum on CT for space-occupying lesions].
D002291:Carcinoma, Papillary / Q000000981:diagnostic imaging; D006801:Humans; D009157:Myasthenia Gravis / Q000000981:diagnostic imaging*; D011012:Pneumomediastinum, Diagnostic; D013945:Thymoma / Q000000981:diagnostic imaging; D013953:Thymus Neoplasms / Q000000981:diagnostic imaging; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed