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Premature thelarche — RACP Paediatrics MCQ

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EasyEndocrinePremature thelarcheRACP Paediatrics

A 2-year-old girl has bilateral breast development (Tanner 2) without other pubertal signs. Normal growth velocity, normal bone age, prepubertal hormones. What is the diagnosis?

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Correct answer: D — Premature thelarche

Isolated breast development in girl <3 without other signs, normal bone age, prepubertal hormones = premature thelarche. Benign, self-limiting. Monitor 6-monthly.

Reference: RCH Melbourne – 2023 – Pubertal Variants CPG