A case of a large calcifying cystic odontogenic tumor associated with odontoma

Abstract

Calcifying cystic odontogenic tumors classified as a tymor by the WHO International Classification of Odontogenic Tumors and Allied Lesions in 2005, are rare.
We report the case of a large calcifying cystic odontogenic tumor that arose in the maxillary sinus of a 27-yearold woman in association with odontoma and an impacted tooth.
We examined the size of the lesion by dental cone beam computed tomography. It was the largest lesion to be reported in Japan, measuring 62.2×53.5×52.6mm. Dental cone beam computed tomography was very useful for accuratetly measuring the size of this tumor.