[GnRH-dependent precocious puberty in a boy with Leydig-cell tumor].

: GnRH-dependent precocious puberty in a boy with Leydig-cell tumor is presented. Precocious activation of the hypothalamo-pituitary axis was caused by long-term exposition to sex-steroids. Long-acting LHRH-analog treatment suppressed the process of precocious puberty.