Lymphedema is a phenomenon of swelling caused by poor circulation in the lymphatic system due to damage to the lymphatic system, resulting in the accumulation of protein-rich lymphatic fluid in a certain part of the body. Why breast cancer patients are prone to lymphedema after treatment When breast cancer patients undergo surgery or radiation therapy, the lymphatic tissues in the armpit will be inevitably damaged. Therefore, patients who have undergone breast cancer treatment are affected by the disruption of the lymphatic system and are at high risk of developing upper limb lymphedema. On average, 10% of post-operative breast cancer patients have had post-operative lymphedema, and the time of occurrence is not certain. Some people swell up for no reason not long after surgery or radiation treatment, while others swell up only after a certain event several years later, which may be as big as inflammation or infection of a wound on the affected limb or as small as a mosquito bite. 2. How to avoid lymphedema 1. Reduce factors that interfere with lymphatic fluid reflux Because of partial interruption of the lymphatic system, resulting in greater resistance when the lymphatic system refluxes, therefore, the primary thing is to avoid factors that will affect reflux. 2. Limit the production of lymphatic fluid Lymphatic fluid is the body fluid that must be returned through the lymphatic system, lymphatic fluid, relatively, lymphatic fluid from the expansion of microvessels are to be avoided. 3, massage or massage is more intense deep massage This kind of massage will cause vasodilation, increase the production of lymphatic fluid, in patients with damaged lymphatic system return path, it is likely to become the cause of swelling. 4.Travel Avoid reaching airplanes or climbing high mountains as much as possible. When traveling, you must wrap the affected limb with a bandage and try to elevate the affected limb during the journey because the low air pressure at high altitude is one of the factors that may cause lymphedema.