Benign growths are extremely common, with 9 out of 10 women showing benign breast tissue changes. Some types of benign tumors can become cancerous over time. Although most breast abnormalities are not cancerous, some women with breast Do women with non-cancerous breast conditions eventually get Benign Breast. Home → Frequently Asked Questions → Can Benign Cysts Become Cancerous? If the lump is made up of breast cells, a tissue sample can be taken out with the.