Are lumpy breasts or fibrocystic breasts the same as dense breasts?

Having “lumpy” breasts doesn’t mean a patient has dense breasts, nor does it mean the breasts have fibrocystic changes. Both fatty and dense breasts can feel lumpy as the ligaments that support the breast can surround fat lobules and make them feel almost like soft grapes. Breast density is not determined by how a breast looks or feels but rather by the appearance on mammography.