SDM POSSIBLE: A Breast Cancer Treatment Decision Aid for Women 70+ With Low-Risk Stage I Breast Cancers

This study is developing and testing a decision-support tool (called SDM POSSIBLE) to help women aged 70 and older with low-risk, early-stage breast cancer and their surgeons make informed decisions together about treatment options — including whether surgery, radiation, or hormone therapy alone might be appropriate. The goal is to ensure older women understand all their options and feel empowered to choose the approach that best fits their values and health situation. **You may be eligible if...** - You are a biological female aged 70 or older - You have been diagnosed with your first primary invasive breast cancer - Your cancer is early stage and low-risk (meets specific clinical criteria) - You are seeing a surgeon at one of the participating clinics **You may NOT be eligible if...** - You have had breast cancer before - Your cancer is higher risk or more advanced than the study criteria allow - You are not a patient at a participating practice - You are unable to complete study surveys or interviews Talk to your doctor to see if this trial is right for you.