The main invasive types are: Ductal carcinoma: This cancer starts in the ducts of the breast. It's the most common type of breast cancer. Lobular carcinoma: This cancer starts in the lobes of the ...

Breast cancer (malignant breast neoplasm) is a type of cancer originating from breast tissue, most commonly from the inner lining of milk ducts or the lobules that supply the ducts with milk.

Unlike the more common breast cancers affecting glandular tissues (milk ducts and lobules), phyllodes tumors are classified as a type of sarcoma, which specifically targets the connective tissue.

Breast Cancer Overview Cellular Origin Breast cancer usually begins in the cells of the milk-producing ducts (ductal ...