Abstract

Primary intraosseous carcinoma of the jaw is a rare tumour presumably developing from residues of the odontogenic epithelium. The epithelial lining of odontogenic cysts has the potential to transform into various types of odontogenic tumour. Only a few cases have been reported in the literature with malignant changes in odontogenic cysts. In most cases, the diagnosis is delayed because of nonspecific clinical and radiologic findings, when present, they should alert the clinician to consider potential neoplastic growth within the cystic lining. The frequency of carcinomatous transformation within odontogenic cysts is reported to range from 0.13 to 3%. Knowledge of the clinical, radiographic, and histopathologic features of PIOC allows accurate diagnosis and appropriate treatment of this rare malignancy. Here we report two cases of primary intraosseous carcinoma of the jaw

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