title: [Germ cell tumours in gonadal dysgenesis (author's transl)].
abstract: In a 17-year-old patient gonadal dysgenesis with a XY-karyotype was diagnosed by laparoscopy and chromosomal analysis. Two years later, the patient came again to the hospital because of a large tumour which proved to be a dysgerminoma. Except dysgerminomas, other germ cell tumours are also found in gonadal dysgenesis, for example gonadoblastomas, which consist of germinal cells, Sertoli-granulosa-cells and interstitial cells. In most cases of gonadal dysgenesis with a germ cell tumour a Y-chromosome is present. The risk of a gonadal tumour in such cases is estimated to be 25%. In gonadal dysgenesis with a Y-chromosome a prophylactic extirpation of the gonads is necessary, which should be combined with a hysterectomy.
mesh_terms: D000293:Adolescent; D002369:Castration; D004407:Dysgerminoma / Q000150:complications* / Q000517:prevention & control; D005260:Female; D006801:Humans; D007044:Hysterectomy; D007621:Karyotyping; D010051:Ovarian Neoplasms / Q000150:complications* / Q000517:prevention & control; D014424:Turner Syndrome / Q000150:complications*
vernacular_title: Zur Klinik der Keimzelltumoren bei Gonadendysgenesie