“Arguments can be made that more aggressive locoregional therapy is warranted in populations of young women with breast cancer and perhaps less aggressive therapy in the elderly,” Beadle concluded.
Data on breast cancer mortality as a function of age were provided by Dr. Bircan Erbas and colleagues at six research institutions in Australia. Both the number of cases and the number of deaths increase with age.
Since 1990, mortality has been decreasing for all age groups except those 85 and over. Erbas used a statistical method to predict breast cancer mortality rates over the next 20 years. Women aged 60 to 70 are expected to see the greatest declines in death from breast cancer.
https://www.empowher.com/cancer/content/breast-cancer-outcomes-whats-age-got-do-it