Swelling is a normal side effect of breast cancer surgery and radiation therapy. ... If the swelling persists, and if a larger region starts to become involved — such as the entire arm, hand, underarm, chest, or upper body — these can be signs that lymphedema is developing. The Lymph O Fit products are specialist items designed to assist women suffering from light lymphodema’s following the removal of lymph nodes at the time of their breast surgery. These products include the Lymph O Fit bra, the Lymph O Fit arm sleeve with hand, the Lymph O Fit arm sleeve without a hand and the Lymph O Fit glove. They are all made with a specialist fabric that massages the skin of the wearer to improve the flow of fluids around the body.