31. Breast Cancer Survival Age at Diagnosis: The 5-year relative survival rates for breast cancer increase with age at diagnosis until the age of 75. 82% for women age under 45 86% for women ages 45–54 87% for women ages 55–64 88% for women ages 65–74 84% for women ages 74 and over American Cancer Society Breast Cancer Facts & Figures 2001–2002