Etiology • Unknown in most cases • May be due to traumatic injury producing intramedullary
hemorrhage and subsequent clot resorption • Alternative theory suggests degeneration of primary intrabony
pathology
Clinical Presentation • Peaks in second decade • Usually in body of mandible • Painless in most cases • Swelling noted in one-fourth of cases
Radiographic Findings • Clearly defined radiolucency • Margins may be uneven but clear. • May extend between tooth roots creating a scalloped pattern
hemorrhage and subsequent clot resorption • Alternative theory suggests degeneration of primary intrabony
pathology
Clinical Presentation • Peaks in second decade • Usually in body of mandible • Painless in most cases • Swelling noted in one-fourth of cases
Radiographic Findings • Clearly defined radiolucency • Margins may be uneven but clear. • May extend between tooth roots creating a scalloped pattern
Diagnosis • Radiographic appearance • Clinical finding of an empty bony space (pseudocyst) • Collagen and fibrin line the dead space (no epithelium). • Lamellar bone may be noted along the bony margin.
Differential Diagnosis • Central giant cell granuloma • Fibro-osseous lesion (early) • Hemangioma
Treatment • Surgical exploration • Observation for resolution
Prognosis • Excellent • Small risk of recurrence