Cysts Aneurysmal Bone Cyst
Etiology • Unknown • Possibly represents a vascular response/repair to jaw injury
(an arteriovenous malformation) • Three phases: incipient, destructive, stabilization
Clinical Presentation • Bony expansion and occasionally mild pain • Chiefly occurs in mandible • Female predilection
(an arteriovenous malformation) • Three phases: incipient, destructive, stabilization
Clinical Presentation • Bony expansion and occasionally mild pain • Chiefly occurs in mandible • Female predilection
Radiographic Findings • Expansile, multiloculated, destructive bony lesion • Surrounding bone may be sclerotic • Angiogram demonstrates intense vascularity
Diagnosis • Radiographic lytic lesion • Honeycombed quality of large vascular sinusoidal spaces
and bony septa • May be confused microscopically with central giant cell
granuloma
Differential Diagnosis • Ameloblastoma • Odontogenic keratocyst • Odontogenic myxoma • Hemangioma • Giant cell granuloma
Treatment • Excision to en bloc resection
Prognosis • Good to excellent