Breast Cancer BRAs Study (Breast Cancer Biomechanics of Radiotherapy And Surgery)

The BRAs study is investigating how breast cancer surgery and radiation therapy affect the physical mechanics and structure of the breast — specifically its firmness, shape, and symmetry. Researchers will measure these characteristics using a specialized biomechanics lab at the University of Portsmouth. **You may be eligible if...** - You are a woman aged 18 or older - You have been diagnosed with early or locally advanced breast cancer (B5a or B5b classification) - You have had or are scheduled for breast cancer surgery - You have unilateral (one-sided) breast cancer (the other breast is used as a reference) - You are able to travel to the University of Portsmouth for assessments - You can provide informed consent **You may NOT be eligible if...** - You have metastatic (stage IV) breast cancer - You are less than 2 weeks post-surgery or less than 4 weeks post-radiation - You have an active post-surgical breast infection or still require dressings - You have had previous surgery on the other (unaffected) breast - You have bilateral breast cancer - You have epilepsy Talk to your doctor to see if this trial is right for you.