Breast cancer is the second leading cause of cancer death in women. According to statistics, about 1 out of 8 women will be diagnosed with breast cancer. Men can also rarely develop breast cancer.
Breast cancer occurs when there is abnormal cell growth in the breast. When abnormal cells grow uncontrollably, they can form breast tumour (mass) which can either be benign (noncancerous) or malignant (cancerous). If the breast tumour is malignant then it is considered as breast cancer.
The more common type of breast cancer is invasive (or Infiltrating Ductal Carcinoma (IDC). In more advanced stages of breast cancer it can also spread to other areas of the body, most often to the lungs, liver, bones or brain. The risk of developing breast cancer is higher for older women (especially for those over 55 years of age), Caucasian women, women with family history of breast cancer and inherited genetic mutations of BRCA1 and BRCA2 genes.