What is breast cancer?

Breast cancer is cancer that starts in the breast tissue. Breast cancer occurs when abnormal cells in the breast grow in an uncontrolled way.

Breast cancer can develop at any age. It is most common in women but also affects a small number of men each year.

Breasts are made up of lobules and ducts surrounded by fatty and connective tissue. Lobules produce breast milk and ducts carry milk to the nipple. Read More