JOURNAL ARTICLE

[Clinical and genetic study of a 46, XX man with occult mosaicism ]

Carmen Maciá Bobes, Isabel Alonso Troncoso, Patricia Botas Cervero, Gloria Castaño Fernández, Carmen Fau Cubero
Archivos Españoles de Urología 2002, 55 (8): 952-4
12455288

OBJECTIVE: To describe a 46,XX male with a hidden mosaicism.

METHOD: Clinical, hormonal and genetic findings are presented.

RESULTS: The patient was a normal phenotypic male with a bilateral testicular volume of 10 ml. Hypergonadotropic hypogonadism (elevated serum concentrations of FSH and LH, and normal serum concentration of testosterone) without gynecomastia was found. Final karyotype was a 46,XX/47,XX + mar mosaic, with 3% of studied cells containing an abnormal SRY positive Y chromosome.

CONCLUSION: XX males karyotype must include a great number of metaphases in order to ascertain a definitive genetic diagnosis.

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