title: [Klinefelter's syndrome associated with primary mediastinal germinal cell tumor].
abstract: A case of a man aged 25 year with Klinefelter's syndrome (KS) associated with a primary malignant germinal cell tumour is presented. Echocardiography was of assistance in the diagnosis as a tumour behind the heart was demonstrated. If patients with KS develop cardiopulmonary symptoms, referral for x-ray of the thorax is recommended. If there is enlargement of the heart or increase in width of the mediastinum, echocardiography should be performed. This case history emphasizes further that a negative cytological test does not disprove malignancy.
authors.forename: H L
authors.initials: HL
authors.lastname: Nielsen
authors.forename: F
authors.initials: F
authors.lastname: Frandsen
mesh_terms: D000328:Adult; D006801:Humans; D007713:Klinefelter Syndrome / Q000150:complications*; D008297:Male; D008479:Mediastinal Neoplasms / Q000209:etiology* / Q000473:pathology; D013724:Teratoma / Q000209:etiology* / Q000473:pathology
vernacular_title: Klinefelter's syndrom associeret med primaer malign mediastinal germinalcelletumor.