Primary mediastinal choriocarcinoma.
D000328:Adult; D002822:Choriocarcinoma / Q000175:diagnosis* / Q000209:etiology; D006177:Gynecomastia / Q000150:complications; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D011379:Prognosis; D013737:Testis / Q000473:pathology