In a 6½‑year‑old child who is markedly short and has developed pubic hair over the past four months, with a family history of short stature, is this likely an endocrine disorder such as premature adrenarche or congenital adrenal hyperplasia, or a normal variant of development?

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Last updated: October 1, 2026 • View editorial policy

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Ovo je vjerovatno endokrini poremećaj i zahtijeva hitnu evaluaciju

Kombinacija izrazito niske visine i pojave pubičnih dlaka u dobi od 6,5 godina kod djeteta sa porodičnom istorijom niske visine zahtijeva obaveznu endokrinološku evaluaciju, jer ovo može biti kongenitalna adrenalna hiperplazija (CAH) ili drugi ozbiljan poremećaj.

Zašto je ovo zabrinjavajuće

Prematurna pubarha (rana pojava pubičnih dlaka) sama po sebi je često benigna varijanta razvoja, ali kombinacija sa izrazitom niskom visinom mijenja kliničku sliku:

  • Izolovana prematurna pubarha se obično javlja kod djece normalne ili čak ubrzane visine 1, 2
  • Niska visina + prematurna pubarha sugeriše na patološki proces, ne normalnu varijaciju
  • Porodična istorija niske visine ne isključuje endokrini poremećaj - zapravo može biti neprepoznata CAH u porodici

Najvjerovatniji dijagnostički razmatranja

1. Nekonvencionalna CAH (NCCAH)

  • Javlja se kod 5-20% djece sa prematurnom pubarhom 3
  • Može prezentovati sa usporenim rastom zbog ubrzanog koštanog sazrijevanja 4
  • Zahtijeva mjerenje 17-OHP nivoa:
    • Bazalni 17-OHP > 170 ng/dL (5.1 nmol/L) ima 97% senzitivnost i 91% specifičnost 3
    • Bazalni 17-OHP > 410 ng/dL (12.4 nmol/L) ima 100% specifičnost i potvrđuje dijagnozu bez potrebe za ACTH testom 3
    • Ako je bazalni 17-OHP između 200-10,000 ng/dL, potreban je ACTH stimulacioni test 4

2. Klasična CAH (kasno otkrivena)

  • Može biti propuštena u neonatalnom periodu, posebno kod muškaraca
  • Niska visina nastaje zbog hronične hiperandrogenije koja uzrokuje ubrzano koštano sazrijevanje i prerano zatvaranje epifiza 4
  • Bazalni 17-OHP > 10,000 ng/dL sugeriše klasičnu CAH 4

3. Deficit hormona rasta (GHD)

  • Manje vjerovatno kao primarni uzrok, ali može koegzistirati
  • Zahtijeva evaluaciju ako CAH bude isključena 5

Obavezna inicijalna evaluacija

Odmah uraditi:

  1. Bazalni 17-OHP (ujutru, 8h) - ključni test 4, 3
  2. DHEA-S - marker adrenalne androgene aktivnosti 2, 6
  3. Testosteron - procjena androgene izloženosti
  4. Koštana starost (rendgen leve šake) - procjena ubrzanog sazrijevanja
  5. IGF-1 i IGFBP-3 - skrining za GHD 5
  6. Elektroliti, renin, aldosteron - procjena mineralokortikoidnog statusa 4

Ako je bazalni 17-OHP > 170 ng/dL:

  • Uraditi ACTH stimulacioni test (osim ako je > 410 ng/dL) 4, 3
  • Post-ACTH 17-OHP > 1,104 ng/dL (33.4 nmol/L) potvrđuje NCCAH sa 100% senzitivnošću i specifičnošću 3

Kritične crvene zastavice u ovom slučaju

  • Izrazita niska visina - nije tipična za benignu prematurnu adrenarhu 1, 2
  • Trajanje od 4 mjeseca - progresivna pojava
  • Dob 6,5 godina - ranije od tipične prematurne adrenarhe (obično 7-8 godina kod djevojčica) 2, 6

Zašto je ovo hitno

Ako je u pitanju CAH:

  • Rizik od adrenalne krize - može biti fatalna 4
  • Progresivno zatvaranje epifiza - svaki mjesec odgode smanjuje konačnu visinu 4
  • Tretman hidrokortizonom može spriječiti dalji gubitak potencijala rasta 4

Što NIJE potrebno bez dodatnih znakova

  • Rutinsko testiranje kod izolovanog pubičnog dlakavog rasta bez drugih znakova je nepotrebno 7, 1
  • Ali ovo nije izolovana prematurna pubarha - prisutna je značajna niska visina

Zaključak algoritma

Niska visina + Prematurna pubarha
         ↓
Bazalni 17-OHP (ujutro)
         ↓
    ┌────┴────┐
    ↓         ↓
< 170 ng/dL   > 170 ng/dL
    ↓              ↓
Razmotriti    > 410 ng/dL → CAH potvrđena
druge uzroke  170-410 ng/dL → ACTH test
(GHD, itd.)        ↓
              Post-ACTH > 1,104 ng/dL → NCCAH

Upućivanje dječjem endokrinologu je obavezno i hitno 4.

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