My son has had swollen feet since birth, now yesterday his leg swole too. any ideas as to what can cause this?

What age is your son: There can be many things that present as swelling in the feet. If your son is a infant or child start now with his doctor and ask to be seen today if not go to the emergency room to evaluate new leg swelling. Dont wait.

Son: Get him looked at asap. What age is he? Should see either cardio- vascular or interventional radiologist but er would be a good place to start. Hope he does well.