Breast biopsy said fibrosis and/or sclerose. what is the difference? can this explain a firm palpable lump?

Breast biopsy: A firm palpable "lump" at age 35, with a breast bx which shows "fibrosis and sclerosis" (both benign findings) is reassuring. If there is a history of early breast cancer in a prime relative (mother, sister, grandmother) ask your provider to order an MRI of both breasts. The terms "fibrosis and sclerosis" are basically synonymous and by themselves are not concerning.