History of the present illness

This is a 15-year-old white female with a large radiolucency in the left posterior mandible and ascending ramus (Figure 1). It was an incidental finding. The lesion is of unknown duration and is asymptomatic. The radiolucency is not expansile. The past medical history is unremarkable.

Figure 1 This is a panoramic radiograph taken at first clinical presentation. Note the large, well-defined unilocular radiolucency with scalloped border in the posterior mandible extending into the ascending ramus.