上顎の残存性歯根嚢胞より発生したと思われる上顎の顎骨中心性癌の1例

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  • A case of central carcinoma of the maxilla probably arising from a residual radicular cyst.

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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.<BR>We report a case of central carcinoma occurring in a 69-year-old man. Marsupialization was performed under the diagnosis of residual radicular cyst.<BR>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.

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