title: Mediastinal choriocarcinoma in a chromatin-positive boy.
abstract: A case of primary mediastinal choriocarcinoma in a chromatin-positive boy is reported. The incidence of neoplasms in patients with so-called Klinefelter's syndrome is discussed as well as embryogenesis and diagnostic evaluation in patients presenting with this tumor.
mesh_terms: D000293:Adolescent; D002822:Choriocarcinoma / Q000150:complications* / Q000473:pathology; D002843:Chromatin / Q000032:analysis*; D006801:Humans; D007713:Klinefelter Syndrome / Q000150:complications* / Q000473:pathology; D008297:Male; D008479:Mediastinal Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D009362:Neoplasm Metastasis; D011859:Radiography; D013737:Testis / Q000473:pathology
chemical_list: D002843:Chromatin