Abstract
Odontoma is the most common odontogenic tumor. However, it rarely occurs in the maxillary sinus.We report an extremely rare case of complex odontoma arising in the posterior wall of the maxillary sinus.A 39-year-old man came to our department because of swelling in the left maxillary anterior region. A dental Xray film showed a round radiolucent lesion in the upper incisal alveolar bone. Panoramic radiography accidentally revealed a round radiopaque mass in the left maxillary sinus. A computed tomographic scan showed a high density mass in the posterior wall of the maxillary sinus. Both lesions were enucleated with the patient under general anesthesia. The resected lesion from the maxillary sinus measured 26×23×21mm and was white and bony hard. The definitive histopathological diagnosis was a complex odontoma.About 1 year after the operation, the patient showed no signs of recurrence.
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