When I first read the findings, I suspected pericoronitis in the third molar area. After seeing the Panorex, it appears to be cyst origin. The coronoid process has almost completey resorbed along with the retromolar area. My recommendations would be to removed the third molar, and biopsy the soft tissue. If a older panorex can be viewed to see the progress of the lesion. I would be curious to find out what the histology report finds. The lesion does not have well defined outline, and appears to be soft tissue in origin. When you treat the case, post the diagnosis.
