There is a lytic benign appearing lesion within the angle of the mandible on the right. There is well-defined sclerotic margin in its outline with no cortical breach and no soft tissue mass.
There is no involvement of the adjacent dental anatomy. There is no unerupted tooth associated with this mandibular cystic lesion.
The appearances are those of a benign lesion, probably a keratocystic odontogenic tumour.