title: Retroperitoneal teratoma as first sign of Klinefelter's syndrome.
abstract: A 5 month old boy with a retroperitoneal teratoma was found to have a 47 XXY karyotype indicating Klinefelter's syndrome. This observation suggests that patients with the syndrome may be at risk of germinal tumours in sites other than those usually reported (mediastinum, brain, and testes).
authors.affiliation: Department of Paediatrics, University Hospital, Free University of Brussels, Belgium.
authors.forename: S
authors.initials: S
authors.lastname: Hachimi-Idrissi
authors.forename: S
authors.initials: S
authors.lastname: Desmyttere
authors.forename: A
authors.initials: A
authors.lastname: Goossens
authors.forename: B
authors.initials: B
authors.lastname: Desprechins
authors.forename: J
authors.initials: J
authors.lastname: Otten
mesh_terms: D006801:Humans; D007223:Infant; D007713:Klinefelter Syndrome / Q000150:complications*; D008279:Magnetic Resonance Imaging; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000150:complications* / Q000473:pathology; D013724:Teratoma / Q000150:complications* / Q000473:pathology