CT findings of a nasoalveolar cyst.

We report the CT findings of a nasoalveolar cyst that developed as a slowly enlarging mass in our patient. CT showed a soft-tissue mass with a smooth margin; a sediment level was apparent. A dense calcified layer with a "milk of calcium" appearance was seen in the inferior portion of the lesion. The maxilla was resorbed by the lesion. Total excision of the mass was performed, and the microscopic findings were consistent with a nasoalveolar cyst.