AN UNUSUAL VARIANT OF KERATOAMELOBLASTOMA

An unusual case of ameloblastoma which depicts cystic follicles contai ning orthokeratin, parakeratin, desquamated epithelium and necrotic ma terial with dystrophic calcification is presented. The presence of ame loblast-like cells confirms the diagnosis of an ameloblastoma. However , certain features resembled those of the keratoameloblastoma and othe rs, less convincively, the papilliferous keratoameloblastoma The exten sive keratinisation in this tumour and in the aforementioned neoplasms raises the question whether they represent variants of the acanthomat ous ameloblastoma.