Etiology

• Origin from dental papilla/follicular mesenchyme

Clinical

• Rarely pain
• Slow growing
• Aggressively invasive
• Sometimes associated with impacted teeth
• Expansile lesion
• Outer cortical plate expansion – leads to perforation
• If occurs in maxilla, invades maxillary sinus – exophthalmos

Radiology

• Early: Unilocular
• Multilocular radiolucency with septae in a “tennis racket” or “honey comb” appearance
• Poorly defined boundaries

Histology

• Stellate cells with long process – forms loose meshwork – interspersed with mucoid intercellular CT – which has occasional strands of odontogenic epithelium

Management

• Aggressive surgical excision – with safe margin of 1.5-2cm
• Reconstruction
• Good prognosis – does not metastasize

Picture