Cancer is characterized by the uncontrolled growth and spread of abnormal cells. If the spread remains unchecked, it may lead to death. It may spread to other parts of the body. Risk factors are lifestyle or personal traits that increase the risk of developing disease Decreasing the risk factors decreases the chance of disease acquisition. Early diagnosis means a good chance of successful treatment . Mammography is the best tool doctors for screening breast cancer. It is recommend that women must obtain a mammogram each year, starting at the age of 40.