Surgical results of genital reconstruction in 15 patients with congenital adrenal hyperplasia which were seen in ametropolitan general hospital at Santiago, Chile, along the last 20 years are described. Blood 17 hydroxiprogeste-rone and urinary pregnanetriol together with sexual positive cromatin were the most useful tests to confirm theclinical diagnosis. Urinary 17 Ketosteroids were not diagnostic in two cases. Preoperative evaluation to defineanatomy was done with pelvic ultrasound, genitography and cystoscopy. They were all useful, specially cystoscopyif it was done by experienced persons. Surgical reconstruction of female external genitals was done in 14 girls atchildhood with good aesthetic and functional results on the late controls. There was no introital estenosisat follow-up of cases that reached adulthood, except for one case of small bowel vaginoplasty, which will require furthersurgery. Male genitalia were asigned to one patient, because his problem was diagnosed late, at age five years, andfemale sex organs were then extirpated. The patient has good social sex identity but retains many feminine pheno-thypica! elements.(Key words: Congenital adrenal hyperplasia, genitoplasty.)