title: Malignant melanoma presenting as a mediastinal mass.
mesh_terms: D000328:Adult; D001706:Biopsy; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology*; D008545:Melanoma / Q000175:diagnosis / Q000473:pathology*; D013902:Radiography, Thoracic