According to the classification of the World Health Organization (WHO), primary intraosseous carcinoma (central carcinoma) is defined as a squamous cell carcinoma arising within the jaw, having no initial connection with the oral mucosa, and presumably developing from residues of the odontogenic epithelium.
We report a case of central carcinoma occurring in a 69-year-old man. Marsupialization was performed under the diagnosis of residual radicular cyst.
Histopathological examination revealed a moderately differentiated squamous cell carcinoma with atypical lining epithelium. A combination of radiation and chemotherapy was given, followed by a partial maxillectomy. Unilateral total neck dissection was performed 3 months after the initial operation. Five years later, the patient has been free of recurrence and distant metastasis.
