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Fibroepithelial Lesions

A fibroadenoma is a benign neoplasm often found in young women between the ages of 15 and 35, but it may occur at any age.[14] Clinically, it is seen as a single, discrete, mobile nontender mass composed of proliferating ducts (adenoma) and proliferating specialized intralobular fibroblastic stroma (fibro) (Fig. 1-13). Fibroadenoma is not associated with an increased risk of the development of breast cancer. It is cured by excision.

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A lactating adenoma is a benign lesion in which lactational changes have supervened.[15] It may be associated with rapid increase in size during pregnancy, raising a suspicion of carcinoma.

Phyllodes tumors are rare tumors composed of intralobular stroma and ductal epithelium.[16]There is a spectrum of aggressiveness from benign to malignant (low grade and high grade). Most are benign, remain localized, and are cured by excision. Low-grade malignant phyllodes tumors may recur after excision. High-grade malignant phyllodes tumors can …