Abstract
Calcifying odontogenic cysts were first reported by Gorlin et al. in 1962, and were reclassified as calcifying cystic odontogenic tumors by the World Health Organization classification in 2005.
We report a case of a massive calcifying cystic odontogenic tumor arising in the maxilla and occupying the maxillary sinus and nasal cavity.
In February 2008, a 24-year-old male patient was referred to our department for a painless large mass in the right maxillary region. Panoramic X-ray showed a unilocular cystic lesion in the right maxilla containing a calcified mass in the lesion associated with root resorption of adjacent teeth. Computed tomography showed that the cystic lesion including calcified structures measured 5.2×4.7×3.7 cm. A biopsy specimen of the lesion revealed calcifying cystic odontogenic tumor. In April 2008, he underwent tumor extirpation combined with Caldwell-Luc operation. No recurrence was noted 3 years after the operation.
