A cavernous haemangioma of the mediastinum.
D000328:Adult; D016121:Brachiocephalic Veins / Q000000981:diagnostic imaging; D006392:Hemangioma, Cavernous / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed