Presentation
Development of the breast buds in a 21-month -old female infant.
Patient Data
Age: 21 months
Gender: Female
From the case:
Premature thelarche
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Breast ultrasound in a healthy 21-month -old female infant shows retroareolar tissue that is hypoechoic relative to fat in both breasts.
Case Discussion
Premature thelarche is a benign condition that usually manifests in the first 2 years of life.
Normal ultrasound findings in children prior to thelarche are subcutaneous tissue with the pectoralis muscle posteriorly.
When breast development starts, the breast bud appears as retroareolar tissue that is hypoechoic relative to fat.
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