The urologic manifestations of XO/XY mosaicism.
The mosaic karyotype XO/XY is expressed by a spectrum of genital phenotypes, ranging from normal male through ambiguous genitalia to normal female. The urologist may see some of these patients because of the following clinical presentations: 1) ambiguous genitalia with a chromatin-negative buccal smear, 2) hypospadias with cryptorchidism or 3) cryptorchidism with müllerian remnants, discovered unexpectedly during inguinal operations. Reliable karyotyping is mandatory for diagnosis of XO/XY patients. Management should include laparotomy with excision of any intra-abdominal gonads (testis and/or streak gonad) because these are prone to develop malignancies that may occur before puberty. Female sex assignment and a reconstructive operation are advised in cases with severely deficient virilization of the genitalia.
D003456:Cryptorchidism / Q000235:genetics / Q000601:surgery; D012734:Disorders of Sex Development / Q000175:diagnosis / Q000235:genetics* / Q000601:surgery; D005835:Genitalia / Q000002:abnormalities* / Q000601:surgery; D006801:Humans; D007021:Hypospadias / Q000235:genetics / Q000601:surgery; D007223:Infant; D007621:Karyotyping; D008297:Male; D009030:Mosaicism