![]() Specifically, lymph nodes are at risk when cancer has spread to them, and they need to be removed-such as in breast cancer that spreads to the axillary nodes. “The majority of lymphedema cases are due to disruption of the lymph system during cancer treatment,” he explains. ![]() Skoracki, in the industrialized world is often the result of interventions during cancer treatment but can also be caused by other health issues, such as infection and inherited conditions. When this process is interrupted due to lymph node damage or removal, however, the fluid doesn’t get pumped through and instead accumulates to cause the swelling associated with lymphedema. “The lymphatic system,” he explains, “is composed of leaky vessels that allow fluid and large protein molecules to come in and also has a pump mechanism (muscles and valves) to move fluid through.” When the lymphatic system is functioning properly, it pushes fluid to the lymph nodes to filter and recycle in the bloodstream. These drains, placed outside of houses, are trenches filled with gravel or rock that contain a perforated pipe to redirect surface and groundwater away from an area. “I liken the lymphatic system to a French drain for a home,” says Dr. ![]() This swelling, or lymphedema, usually occurs in the extremities (arms and legs). Lymph nodes are found, among other areas, under the arm (axillary), in the neck, and in the groin.Īs a result of this imbalance of fluid production and clearing, the fluid-which carries blood cells (mostly blood cells called lymphocytes)-accumulates in the affected area of the body and causes that area to swell. The lymphatic system is a major part of the body’s immune system-a network of organs, nodes, ducts, and vessels that make and move lymphatic fluid from tissues to the bloodstream.
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