Abstract
Epidermal cyst arising from breast is an uncommon benign condition. We report two cases of epidermal cyst of the breast on fine needle aspiration one in male and other in female patient in their forties. Epidermal cyst of breast presents as an enlarging lump in the breast and mimics a benign breast lesion, most commonly fibroadenoma. Excision is usually recommended for a definite histopathological diagnosis and for the prevention of potential risks of malignant transformation.
Highlights
Epidermal cyst of breast is an uncommon benign condition and is usually located in the skin layer
Breast Epidermal cyst may arise due to various mechanisms that may result in damage to epidermis which further gets implanted deep within the breast tissue or developed following squamous metaplasia of normal columnar cells within a dilated duct in cases of fibrocystic disease, or within a fibroadenoma or phyllodes tumours.[4]
Epidermal cyst in breast need to be differentiated from fibroadenoma, breast abscess, breast carcinoma, gynaecomastia as in case-1.[6]. Radiologically on mammography, it appears as noncalcified, well-circumscribed homogeneous lesion with increased density, and on ultrasonography (USG) it appears as solid, circumscribed and complex or heterogeneous mass
Summary
Epidermal cyst of breast is an uncommon benign condition and is usually located in the skin layer. It refers to cysts resulting from the proliferation and implantation of epidermal elements within a circumscribed space in the dermis. The occurrence of epidermal cyst in the skin of the breast is rare, till date, less than 40 cases have been reported to the best of English literature search. It presents as a small lump and needs to be differentiated from other non-neoplastic and neoplastic breast lesions. We report two cases of enlarging epidermal cyst of the breast
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