title: Ambiguous genitalia in an elderly woman with a mosaic 45,X/46,X,dic(Y)(Q11.2) karyotype.
abstract: A 66-year-old woman presented with clitoromegaly since childhood, primary amenorrhea, no breast development, and a large right inguinal hernia. A mosaic karyotype was identified containing a predominant 45,X cell line and a cell line with 46 chromosomes, one X chromosome, and a small dicentric Y chromosome with a breakpoint in band qII.2. The patient underwent hysterectomy, bilateral gonadectomy, inguinal hernia repair, clitoral recession, and formation of a neointroitus. A dysgerminoma was identified in the right dysgenetic gonad. This report demonstrates the natural history of untreated mixed gonadal dysgenesis and the importance of early evaluation and treatment, as well as the molecular characterization of a dicentric Y chromosome.
authors.affiliation: Department of Gynecology and Obstetrics, The John Hopkins Medical School, Baltimore, Maryland, USA.
authors.forename: Y R
authors.initials: YR
authors.lastname: Smith
authors.forename: G
authors.initials: G
authors.lastname: Stetten
authors.forename: L
authors.initials: L
authors.lastname: Charity
authors.forename: C
authors.initials: C
authors.lastname: Isacson
authors.forename: J P
authors.initials: JP
authors.lastname: Gearhart
authors.forename: A B
authors.initials: AB
authors.lastname: Namnoum
mesh_terms: D000368:Aged; D004407:Dysgerminoma / Q000235:genetics / Q000473:pathology / Q000601:surgery; D005260:Female; D005836:Genitalia, Female / Q000002:abnormalities*; D006060:Gonadal Dysgenesis, Mixed / Q000235:genetics* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007621:Karyotyping; D009030:Mosaicism / Q000235:genetics* / Q000473:pathology; D010051:Ovarian Neoplasms / Q000235:genetics / Q000473:pathology / Q000601:surgery; D014998:Y Chromosome / Q000235:genetics / Q000473:pathology