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Bradford W. Betz, MD
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Juvenile Fibroadenoma

Case Detail

Anatomy: Breast
Joseph Junewick, MD FACR
Diagnostic Category: Neoplasia Benign
Created: over 6 years ago
Updated: over 6 years ago
Tags: PEDS
Modality/Study Types: US
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15 year old with rapidly enlarging right breast mass.

Case Images


Juvenile Fibroadenoma


US – Transverse and longitudinal images show a large (9.8 × 9.6 × 7.4 cm) circumscribed solid right breast mass with uniform echogenicity and mild hyperemia on Doppler.


Juvenile fibroadenoma is an uncommon histologic variant of fibroadenoma that frequently undergoes markedly rapid growth. A fibroadenoma over 5–10 cm in diameter is termed a giant fibroadenoma. Although most giant fibroadenomas are of the cellular subtype, not all cellular fibroadenomas are giant. Juvenile fibroadenomas most often occur in African American adolescent girls. Approximately 10%–25% of patients with juvenile fibroadenomas have multiple or bilateral tumors at presentation. Patients with a juvenile fibroadenoma typically present with a rapidly enlarging breast; skin ulceration or distended superficial veins may be present.


Chung EM, Cube R, Hall GJ, et al. Breast Masses in Children and Adolescents: Radiologic-Pathologic Correlation. RadioGraphics (2009); 29: 907-931.


Katie Beck, RDMS

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