Keratoameloblastoma of Oral Cavity: Report of Two Cases

Abstract

Keratoameloblastoma is a rare variant and histologically heterogenous group of ameloblastomas,which have areas of ameloblastic epithelium and extensive keratin formation. Other subtypes ofameloblastoma which exhibit keratinisation in their parenchyma include acanthomatousameloblastoma, andpapilliferouskeratoameloblastoma. Previously it was thought to be a variant of acanthomatousameloblastomawith focal areas of keratinisation. Extensive keratin deposition in the connective tissue isolateskeratoameloblastoma as a separate entity from acanthomatousameloblastoma. The tumour presents itself asa destructive and an enlarging mass, mostly involving the posterior region of the mandible, with men beingmore commonly affected in the ratio of 3:1. This case report presents two cases of keratoameloblastoma, onein the posterior mandible and the other in the anterior maxillary region.