Juvenile fibroadenoma (breast)

Last revised by Dr Daniel J Bell on 25 Feb 2018

A juvenile fibroadenoma of the breast is a term given to a fibroadenoma presenting in children or adolescents. These may account for ~0.5-2% of all fibroadenomas, and are rapidly-growing masses that cause asymmetry of the breast, distortion of the overlying skin, and stretching of the nipple.

10-25% of patients with juvenile fibroadenomas have multiple or bilateral lesions at presentation 1. A juvenile fibroadenoma is usually characterized by prominent stromal cellularity and epithelial hyperplasia.

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