Breast cancer occurs in every country of the world in women at any age after puberty but with increasing rates in later life.Almost entirely, these cases are found in women, but men can also develop Breast cancer.Almost entirely. Inside breasts there  are lobules, ducts, fat, blood and lymph vessels, ligaments, and connective tissue. Lobules are structures that make breast milk. Ducts carry breast milk from the lobules to the nipple..There are 4 types of breast Cancer.