Ameloblastoma

Findings:

Multiple CT images of the mandible demonstrate an expansile lytic lesion of the left mandibular angle associated with a small medially projecting soft tissue mass. Multiple cortical interruptions are present in association with this lesion. It is not directly associated with the crown of an unerupted tooth.

Discussion:

nExpansile lytic lesion with cortical interruptions, unilocular or multilocular, with or without soft tissue mass
nPath- benign histology but locally invasive
nDdx of mandibular cystic lesions:
nDentigerous cyst- crown of unerupted tooth
nRadicular cyst- roots- most common- caries
nOdontogenic keratocyst- more aggressive, multilocular, impacted tooth
nOthers: ABC, giant cell granuloma, fibrous dysplasia

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