Additional Study Information: The purpose of this study is to compare usual lymph node surgery to an added procedure during the surgery to help surgeons see the lymph node system better. During usual surgery, the lymph node system may be disrupted, which can cause swelling in the arm. This research study will use a new lymph node surgery technique to look at how fluid drains through the lymph node system in your upper arm. This new procedure could reduce the chance of developing arm swelling. But, it could also cause side effects, which are described in the risks section below. There will be about 516 people taking part in this study. This study will help the study doctors find out if this different approach is better than the usual approach. To decide if it is better, the study doctors will be looking to see if the ARM surgery method decreases the risk and or the severity of swelling in the arm and improves your quality of life.