Dr. Vladimir Zeetser, DPM, FACFAS
America's Premier Foot & Ankle Surgeon
This is usually a benign soft tissue mass filled with a thick jelly like fluid. They often arise from a joint capsule or tendon sheath. A lump beneath the skin can cause pressure on a nearly nerve or pain in shoes. These fluid-filled masses are fairly common and can be present in many locations on the foot, but usually on the top. Without symptoms, they can be left alone; however, if they continue to enlarge and cause pain, the fluid can be drained. If the mass continues to fill with fluid, it may require surgical removal.