The patient reported progressive swelling of the right posterior mandible of unknown duration. Tooth # 30 was not vital. The swelling had perforated the lingual plate. There were no other radiolucencies in the jaw bone.
Figure 1 This is a panoramic radiograph taken at first clinical presentation. Note the large, well-defined unilocular radiolucency involving area of teeth #s 30-32. Also note the more radiolucent small round lesion apical to tooth #30 indicating bone perforation.