I suffer from pain in upper left side of the mandibular, what is causing this?

Please can you tell me what is that ” like a circle formation” on the RTG picture attached .
I am 55 years old female .,i feel some discomfort and pain in the upper part of the left side of the mandibular.
Can you tell me what do you see on the RTG image ?

Age: 55
Medications: Metformin
General Information: I am diabetic taking metformin

Dr Ahmed Fawzy
Dr Ahmed Fawzy

This is maxillary sinus infection
Good Luck

Dr. Ayman Darrag
Dr. Ayman Darrag

It seems like a sinus infection , do you have another views to send so i can be sure ?