Multiple Dents in my skull

After three brainsurgeries, about 18 years ago, I had to have skull reconstructive surgurey.  The doctors took a section of my right skull, cut it in half, and placed it into a hole that had developed on my left skull.  This operation left me with larger dents on the left and right sides of my skull.  

As I age and begin to lose hair, these dents are finally becoming visible.  I have very often wondered if a doctor could fill in these dents to have my skull conform to the normal curve shape-all around.  I also wonder if a doctor can remove or fix all of the scars that have been left.

Thanks