UW School of Dentistry
COM April 2007
Mixed radiolucent radiopaque lesion associated with impacted tooth #32
Dolphine Oda, BDS, MSc
Drs. John Heldridge & Richard T. Jones
Edmonds Oral Surgery and Jones Orthodontics, Seattle, WA
Case Summary and Diagnostic Information
This is a healthy 13-year old African American male who first presented for an initial orthodontic examination. Clinical examination of the area showed a normal range of the mandibular motion with no evidence of bony expansion. The overlying and surrounding oral mucosa was unremarkable.
Diagnostic Information Available
History of present Illness
Clinical and Radiographic Findings
Figure 1. This is a panoramic view of the primary tumor taken at the initial presentation for orthodontic treatment. Note the impacted tooth #32 with a large radiopaque mass associated with the crown of the tooth.
Figure 4. Higher power (x200) histology shows a mass of hard and soft tissue made up of tooth-like structures surrounded by a dental follicle. The latter is lined by epithelium and supported by a myxoid connective tissue wall.
Figure 5. High power (x400) histology shows enamel matrix with the fish-scale appearance.
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