title: Prevalence of nonclassic adrenal hyperplasia (NCAH) in hyperandrogenic women.
abstract: OBJECTIVE
  The clinical symptoms of nonclassic adrenal hyperplasia (NCAH) are identical with polycystic ovary syndrome (PCOS). The aim of our study was to determine the prevalence of nonclassic adrenal hyperplasia (21-hydroxylase-deficiency) in hyperandrogenic women, its biochemical, endocrine and clinical characteristics and to compare them with parameters of patients with ovarian hyperandrogenism.
  
  
  METHODS
  Since 1999, 298 patients with elevation of at least one androgen and manifestation of one of the clinical androgenic symptoms (oligo/amenorrhea, hirsutism or acne) have been identified in our database. A diagnosis of NCAH was considered when the basal or stimulated 17-hydroxyprogesterone was elevated.
  
  
  RESULTS
  Only eight patients were identified as having 21- hydroxylase deficient NCAH in the whole group of 298 hyperandrogenic women. Hirsutism and acne were found only in three, two patients, five of them had oligo/amenorrhea. Seven patients had both elevated basal and stimulated 17-hydroxyprogesterone, while in one case only elevation of stimulated level was found. All of the NCAH patients had elevated concentrations of testosterone, six DHEA, lower SHBG was found in four patients. Surprisingly, none of the NCAH patients had increased DHEAS.
  
  
  CONCLUSIONS
  In our study, the prevalence of NCAH in hyperandrogenic women was 2.68%. Their leading symptom was oligomenorrhea, skin androgenic disorders were a minor clinical problem. None of the NCAH patients had an elevated DHEAS, the androgen dominantly produced by the adrenal glands.
authors.affiliation: Dept. of Gynecology and Obstetrics, 1st Medical Faculty of Charles University and General Faculty Hospital, Praha 2, Czech Republic. michael.fanta@volny.cz
authors.forename: Michael
authors.initials: M
authors.lastname: Fanta
authors.forename: David
authors.initials: D
authors.lastname: Cibula
authors.forename: Jana
authors.initials: J
authors.lastname: Vrbíková
mesh_terms: D019326:17-alpha-Hydroxyprogesterone / Q000097:blood; D000152:Acne Vulgaris; D000312:Adrenal Hyperplasia, Congenital / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology; D000324:Adrenocorticotropic Hormone; D015992:Body Mass Index; D003687:Dehydroepiandrosterone / Q000097:blood; D019314:Dehydroepiandrosterone Sulfate / Q000097:blood; D005260:Female; D006628:Hirsutism; D006801:Humans; D017588:Hyperandrogenism / Q000150:complications*; D011085:Polycystic Ovary Syndrome / Q000175:diagnosis / Q000000981:diagnostic imaging; D012738:Sex Hormone-Binding Globulin / Q000032:analysis; D013739:Testosterone / Q000097:blood; D014463:Ultrasonography
chemical_list: D012738:Sex Hormone-Binding Globulin; D013739:Testosterone; D003687:Dehydroepiandrosterone; D019314:Dehydroepiandrosterone Sulfate; D019326:17-alpha-Hydroxyprogesterone; D000324:Adrenocorticotropic Hormone