title: 46,XX T testicular disorder of sex development. Case report.
abstract: OBJECTIVE
  We present a case of X-Y translocation with male phenotype (46,XX testicular disorder of sex development) and review the literature.
  
  
  METHODS
  Disorders of sex development with mismatch of genetic, gonadal and phenotypic sex are quite rare, and some are due to genetic or chromosomal abnormalities. The karyotype was investigated by a cytogenetic study of peripheral blood (phytohemagglutinin-timulated lymphocyte culture over 72 hours). G-banding analysis of 25 metaphases showed a 46,XX chromosome constitution (46 chromosomes with XX sexual composition). Fluorescence in situ hybridization (FISH) analysis with probes for X centromeres and the sex-determining region of the Y chromosome (SRY) (testis-determining factor gene) showed two X chromosomes. The analysis also showed the SRY signal in the telomeric region of the short arm of one of the chromosomes.
  
  
  RESULTS
  In recent years, a number of other genes involved in disorders of sex development in animals and humans have also been identified. Genetic defects in the peptide hormone receptors, members of the steroid receptor superfamily, and other transcription factors, as well as any of a series of enzymes and cofactors involved in steroid biosynthesis can cause abnormal determination and differentiation.
  
  
  CONCLUSIONS
  Although chromosomal abnormalities are rarely present in patients with apparently normal external genitalia, they should be considered in urology consultations by adolescents and adults, particularly in the investigation of gynecomastia or infertility.
authors.affiliation: Department of Urology Complejo Hospitalario Universitario de Albacete, Spain.
authors.forename: José María
authors.initials: JM
authors.lastname: Pastor Guzmán
authors.forename: Hector
authors.initials: H
authors.lastname: Pastor Navarro
authors.forename: María Luisa
authors.initials: ML
authors.lastname: Quintanilla Mata
authors.forename: Pedro
authors.initials: P
authors.lastname: Carrión López
authors.forename: Jesús
authors.initials: J
authors.lastname: Martínez Ruíz
authors.forename: Carlos
authors.initials: C
authors.lastname: Martínez Sanchiz
authors.forename: Miguel
authors.initials: M
authors.lastname: Perán Teruel
authors.forename: Julio Antonio
authors.initials: JA
authors.lastname: Virseda Rodríguez
mesh_terms: D058531:46, XX Testicular Disorders of Sex Development / Q000235:genetics / Q000473:pathology* / Q000601:surgery; D001284:Atrophy; D053713:Azoospermia / Q000209:etiology; D012739:Gonadal Steroid Hormones / Q000097:blood; D006801:Humans; D007985:Leydig Cells / Q000473:pathology; D008297:Male; D010413:Penis / Q000473:pathology; D019919:Prosthesis Implantation; D013737:Testis / Q000473:pathology / Q000601:surgery; D055815:Young Adult
chemical_list: D012739:Gonadal Steroid Hormones