Journal of Clinical Endocrinology & Metabolism, Vol 74, 254-257, Copyright © 1992 by Endocrine Society

ARTICLES

Natural history of premature pubarche: an auxological study

L Ibanez, R Virdis, N Potau, M Zampolli, L Ghizzoni, MA Albisu, A Carrascosa, S Bernasconi and E Vicens-Calvet
Endocrinology Unit, Hospital Materno-Infantil Vall d'Hebron, Autonomous University, Barcelona, Spain.

The natural history of girls with premature pubarche is reported to be normal, but the effects on puberty and on final height are not well documented. We assessed the outcome of a group of girls with premature pubarche from two Latin populations in whom 21-hydroxylase deficiency had been ruled out by an ACTH test. Patients comprised 127 girls (70 Northern-Italian and 57 Northern-Spanish), of whom 69 had entered puberty and 38 had attained adult height. Height, bone age, onset and progression of puberty, height prognosis, adult height, and baseline plasma androgen levels were evaluated. Advanced skeletal maturation and tall stature were constant features during the first years of follow-up and subsequently declined. Puberty began at 9.7 +/- 0.9 yr, and age at menarche (12.0 +/- 1.0 yr) was comparable to maternal and population menarcheal ages. The appearance and chronology of pubertal milestones in both populations were very similar. Adult heights correlated with the height prognosis at diagnosis and at onset of puberty, and were above midparental heights. Premature pubarche produces a transient acceleration in growth and bone maturation with no negative effects on the onset and progression of puberty and final height.

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