[Azoospermia and 45,X/46,XY chromosomal mosaicism: a case report].

Chromosomal abnormalities are common in patients with oligozoospermia or azoospermia. We report the case of a 32-year patient, with male phenotype, and without hormonal or morphological abnormalities, with a severely reduced spermatogenesis. It was revealed a 45,X/46,XY gonadal dysgenesis. We have reviewed the various problems inherent in the discovery of this rare gonadal dysgenesis, including genetic, cancer and fertility risks.