I had a tooth extraction last week where my dentist
Nothing to worry.
Thanks for writing to us..
I do not find any cyst or tumor and the cyst that you are talking about can be very much due to injury..
Cyst can form under the root of an injured tooth due to necrotic tissue.
Rest areas in the x ray looks fine, so do not worry about it..
All looks fine..
Please let me know if I can assist you further..