title: Association of Klinefelter syndrome and abdominal teratoma: a case report.
abstract: Extragonadal germ cell tumors are rare. The association with Klinefelter syndrome has become observed recently. A case of an 11-month-old infant with Klinefelter syndrome and a retroperitoneal mature teratoma is presented. In the tumor and lymphocytes, a 47,XXY karyotype was found. The association of Klinefelter syndrome with germ cell tumors and its possible explanations are discussed.
authors.affiliation: Clinic of Pediatric Surgery and the Department of Biology and Genetics of the Medical University of Gdańsk, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Czauderna
authors.forename: C
authors.initials: C
authors.lastname: Stoba
authors.forename: B
authors.initials: B
authors.lastname: Wysocka
authors.forename: M
authors.initials: M
authors.lastname: Iliszko
mesh_terms: D006801:Humans; D007223:Infant; D007713:Klinefelter Syndrome / Q000150:complications* / Q000175:diagnosis; D007813:Laparotomy; D008297:Male; D010534:Peritoneal Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D012187:Retroperitoneal Space; D013724:Teratoma / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D014463:Ultrasonography