Premature Thelarche: An Updated Review.

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.