Breast Cancer

Breast cancer is a malignant tumour which occurs when breast cells become abnormal and divide without control or order. The majority of breast cancers start in the milk ducts. A small number start in the milk sacs or lobules. Within these two groups, some grow very slowly while others develop more rapidly. Breast cancer can spread to the lymph nodes and to other parts of the body such as the bones, liver, lung and sometimes to the brain.