Sclerosing lobular hyperplasia of the breast after reduction mammaplasty.

Sclerosing lobular hyperplasia is a uncommon benign fibroproliferative lesion of the breast similar to a fibroadenoma. It usually presents as a mass in the outer quadrant of the breast of younger women. The authors report an atypical case of sclerosing lobular hyperplasia that presented as bilateral breast masses in an elderly woman after a reduction mammaplasty. Breast masses that develop after reduction are often a result of fat necrosis, internal scarring, or organizing hematomas. Those that do not resolve warrant open biopsy because they may represent malignant or benign neoplasms.