Hi, it may be a cyst or an abscess
. I would suggest you to take a dental OPG before you consult a dentist
. There may be an impacted tooth
leading to the swelling. You may need to take a course of antibiotics, root canal treatment
of any decayed tooth in relation or surgery to treat the condition. Correct diagnosis can be made after correlating the clinical findings with X ray. If needed, a Biopsy has to be done to find out the cancerous potential of the cells. Take care n all the best!