Lymphedema is a common cancer treatment side effect that can cause swelling in a patient’s arm or leg. It may lead to discomfort, pain and infection. It may make it difficult for patients to find clothes that fit. Lymphedema can also lead to skin infections.

Fortunately, lymphedema can be treated through massage, exercise, bandaging and, in some cases, surgery. We spoke with plastic surgeons Mark Schaverien, M.D., and Ed Chang,...