Hi Leg swelling/lump caused after heavy metal injury may be due -To retention of fluid in leg tissues is known as peripheral edema. It can be caused by a problem with the circulatory system, the lymphatic system - Thrombophlebitis (a blood clot that usually occurs in the leg) -Cellulitis (a skin infection) -Knee bursitis (inflammation of fluid-filled sacs in the knee joint) - Inflammation of bone You may do the following do get the relief Apply cold compression Pain Killers(in consultation with your doctor) Elevation/Leg rise during sleeping(two pillows can be kept below the legs while sleeping) Remove all rings(in case of ladies) anklets, or any other jewelry that goes around a leg. It will be harder to remove the jewelry later if swelling increases Do not smoke or use other tobacco products. Smoking slows healing because it decreases blood supply and delays tissue repair if problem persisits even after 3-4 days please see the surgeon and you may be advised the investigations like X-ray, doppler of leg etc Wish You Good Health Regards Dr Sridhar K