My son is 7 and had started with a knot on the back of his knee. It has now moved to the inside of his knee and he also has a knot at the base of his breast bone. We had lab work done and he has no problems with his calcium or Vit D levels. His Phospherous is low and now is being checked to see if his little kidneys can handle a supplement. Does anyone have a ny ideas on what the bumps on his knee and chest may be or may be caused from?
I would really appreciate it.