Tumors of the mediastinum.
D006801:Humans; D008223:Lymphoma / Q000175:diagnosis; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D009373:Neoplasms, Germ Cell and Embryonal / Q000175:diagnosis; D009380:Neoplasms, Nerve Tissue / Q000175:diagnosis; D013724:Teratoma / Q000175:diagnosis; D013945:Thymoma / Q000175:diagnosis