Peripheral Ameloblastoma : Intro & Clinical
Peripheral (extraosseous) ameloblastoma is rare and accounts for 1% to 5% of all ameloblastomas. It is believed to arise from the rests of dental lamina below the oral mucosa or from the basal epithelial layers of the oral mucosa. Clinical presentation is usually in the form of a small (<1.5 cm), painless, nonulcerated sessile or pedunculated lesion arising from the posterior gingival or alveolar mucosa. Mandibular areas are more commonly affected than maxillary areas. Significant bone involvement is not a feature. The clinical impression is usually a pyogenic granuloma or fibroma. The most commonly affected age group is 4th to 6th decades of life. Image courtesy of: @reportesvillarroel, Caracas, Venezuela.