Cancer Relevance: Lymphedema is a feared complication of breast cancer treatment. Currently it is recognized and treated only after development of significant limb volume changes when it is symptomatic and difficult to treat. Documentation of the impact of local therapies on the development of lymphedema will allow clinicians to make more informed decisions regarding risk benefit ratios of each of our local therapies. Development of a screening tool will allow us to identify high risk populations. Ideally, the high risk population will be identified and an effective prevention strategy implemented. Phase one of this study will help to answer the questions regarding incidence and create a screening tool and phase two will allow the evaluation of a prevention strategy.