Premature thelarche

Case contributed by Dr Mónica Ruiz Díaz


Development of the breast buds in a 21-month -old female infant.

Patient Data

Age: 21 months
Gender: Female

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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Case information

rID: 31186
Published: 28th Sep 2014
Last edited: 18th Sep 2015
Inclusion in quiz mode: Included

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