History of the present illness

This is a 17-year-old white female who presented with an expansile and well-demarcated radiolucency with scalloped border involving teeth #s 27-32 (Figure 1). The radiographic images demonstrate a large and well-defined unilocular radiolucency with scalloped border, pushing tooth #32 posteriorly and thinning the inferior border of the mandible. The radiolucency is clearly expansile (Figure 1) but otherwise asymptomatic. It is of unknown duration and the associated teeth are vital.

Figure 1 This combination radiograph was taken at first clinical presentation. Note the large, well-defined and expansile unilocular radiolucency with scalloped border involving area of teeth #s 28-32. Also note the thinning of the inferior border of the mandible with inferior expansion.