Breast cancer is defined as the development of abnormal cells in the breast. These cells grow and replace normal healthy tissue. Tumors are both benign and malignant found in the breast. Breast cancer is the second most common cancer found in woman, however, men also can develop breast cancer. Cancer is classified by stage. The cancer stage is one of the most important factors to predict prognosis. A cancer stage therefore is one of the most important factors in choosing the best treatment. The purpose of the staging system is to organize the different factors in personality features of the cancer. Stage zero is used to describe noninvasive breast cancer. Stage one describes invasive breast cancer, the tumor measures up to two centimeters and no lymph nodes are involved. In stage two, the cancer has spread to the lymph nodes and is at least two centimeters. Stage three...