The lymphatic system is a network of vessels, ducts, and nodes that
drains and filters fluid (lymph) in the body. It also helps fight infection and
destroy foreign substances, such as bacteria and viruses.
Lymphedema is a swelling that develops in an arm or
leg because of blocked lymph fluid flow, which causes lymph fluid to collect in
the tissue under the skin.
A deep vein thrombosis (DVT) is a blood clot in a vein deep in your body. Usually it's in a lower leg, thigh, pelvis, or arm.
There aren't always symptoms. If there are, they usually include swelling and sometimes pain and tenderness.
“Typically, a person calls saying, ‘I’ve had three or four days of swelling in one of my legs and it won’t go down,’” says Terri Remy, MD, of Virginia Hospital Center.
You’re more likely to have a DVT if you:
Have a blood clotting disorder