Breast development in pediatric patients from birth to puberty: physiology, pathology and imaging correlation

Area of Science:

• Radiology
• Endocrinology
• Human Anatomy

Background:

• Breast tissue exhibits significant developmental changes from birth to puberty.
• These changes are primarily transient and influenced by physiological hormonal fluctuations.
• Early breast histology is similar in both sexes, diverging later in development.

Purpose of the Study:

• To elucidate the key endocrinological changes impacting breast tissue development.
• To correlate these developmental changes with their typical appearance on medical imaging.
• To enhance radiologists' diagnostic accuracy by understanding imaging pitfalls.

Main Methods:

• Review of established endocrinological principles governing breast development.
• Analysis of histological changes in breast tissue across developmental stages.
• Correlation of developmental histology with imaging findings, particularly on ultrasound.

Main Results:

• Identified transient hormonal influences as the primary driver of pubertal breast changes.
• Described the divergence in breast histology between sexes post-puberty.
• Highlighted specific imaging appearances associated with normal developmental variations.

Conclusions:

• Radiologists require a foundational understanding of endocrinology to interpret breast imaging accurately.
• Familiarity with normal developmental changes aids in differentiating benign variations from pathology.
• Ultrasound interpretation benefits significantly from knowledge of breast tissue endocrinology and development.