A breast lump (mass) is a thickening or bump that feels different from surrounding breast tissue. A lump may be discovered in a breast incidentally, during a breast self-examination, or during a routine physical examination by a doctor.
Lumps in the breasts are relatively common and usually not cancerous.
Lumps may be painless or painful. They are sometimes accompanied by nipple discharge or changes in the skin, such as irregularities, redness, a dimpled texture (called peau d'orange, or skin of an orange), or tightened skin.
Breast lumps may be fluid-filled sacs (cysts) or solid masses, which are usually fibroadenomas. Fibroadenomas are not cancerous, and cysts usually are not cancerous.
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