What Can I Do if I Got a Mole Removed, but It Left a Concave Scar?

The scar can be excised and resutured to bring it back to skin level.  This is a simple scar revision technique performed in my Los Angeles office. 

I would encourage you to wait 6-12 months before considering doing any procedure to try to improve the scar.  Your options may be to do some filler like Juvederm or Restylane in the area. 

When a mole is removed by shave removal or tangential excision the lesion is shaved off flat with the surrounding skin. Sometimes this can leave a depressed scar. Your options are "tincture of time," in other words give it some time since it takes 6-12 months to get the final result following any type of surgery. It might improve to some degree. The other option is to use a soft-tissue filler such as Juvederm or Restylane to reduce the depresssion. This would have to be repeated probably every year. Finally, a scar revision could be performed which would also improve the final cosmetic result. Talk to your doctor to determine the best option for you. Good luck.