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Premature Thelarche: An Updated Review.

Alexander K C Leung¹, Joseph M Lam², Kam L Hon^3,4

¹Department of Pediatrics, The University of Calgary, Alberta Children's Hospital, Calgary, Alberta, Canada.

Current Pediatric Reviews

|July 27, 2023

Summary

This summary is machine-generated.

Premature thelarche, characterized by early breast development in girls under 8, is typically benign and requires only reassurance. Close monitoring is essential to differentiate it from central precocious puberty.

Keywords:

Breast enlargement estrogen exposure parental reassurance precocious puberty premature puberty premature thelarche.

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Area of Science:

Pediatric Endocrinology
Reproductive Health
Pubertal Development

Background:

Premature thelarche is the most common pubertal disorder in girls.
It must be differentiated from central precocious puberty to prevent potential reduced adult height.
Early diagnosis and management are crucial for optimal outcomes.

Purpose of the Study:

To familiarize physicians with the clinical signs of premature thelarche.
To outline laboratory tests aiding in differentiating premature thelarche from central precocious puberty.
To provide guidance on managing this condition.

Main Methods:

A comprehensive literature search was performed in PubMed Clinical Queries.
Key terms included "Premature thelarche" with a focus on clinical trials, observational studies, and reviews.
The search was limited to English literature published within the last 10 years.

Main Results:

Premature thelarche is isolated breast development before age 8 without other pubertal signs, often idiopathic.
Causes include hormonal axis variations, increased estrogen sensitivity, or exogenous estrogen exposure.
Diagnosis is primarily clinical, with laboratory tests rarely indicated.

Conclusions:

Premature thelarche is a benign condition requiring only parental reassurance and no specific therapy.
Prolonged follow-up (3-6 months) is crucial to monitor for central precocious puberty signs.
Monitoring includes assessing other pubertal events and linear growth patterns.