When breast cancer patients develop arm swelling after ten years, it is mostly due to the obstruction of lymphatic return, which can be treated by medication and physical therapy. Swelling of arm after ten years of breast cancer mostly occurs in the advanced stage of breast cancer, metastasis of cancer cells or after lymph node dissection surgery, which will lead to lymphatic reflux obstruction, and then swelling of arm will occur. 1. Drug treatment: drugs such as Diosmin tablets can be taken orally to promote the absorption and dissipation of lymphatic fluid for treatment. 2. Physical therapy: you can also choose microwave, massage and other physical therapy to slow down arm swelling after breast cancer surgery. At the same time, you should reduce arm activities and try to elevate the swollen arm to help relieve the symptoms. Some hospitals can also use minimally invasive surgery and other methods of treatment, but not all hospitals can do, when the doctor recommended minimally invasive surgical treatment, the patient can follow the doctor’s instructions. In addition, localized treatment should also be carried out for metastatic foci, along with systemic treatment for breast cancer. Patients are advised to seek timely medical treatment and choose the appropriate way for relief under the advice of professional doctors. If you need to take drugs, you should follow the doctor’s instructions to avoid adverse reactions.