The Department of Veterans Affairs (VA) provides health care at little or no charge to more than 5 million veterans annually.
There are many potential causes of foot, leg, and ankle swelling. In most cases, swelling occurs as a result of certain lifestyle factors, such as: Being overweight: Excess body mass can decrease blood circulation, causing fluid to build up in the feet, legs, and ankles.
1 Behind knee swelling and Behind knee lump (10 causes) 2  Behind knee swelling and Leg lump (9 causes) 3  Behind knee swelling and Swelling symptoms (9 causes)  Behind knee swelling and Back lump (8 causes)