Gigantic Dentigerous Cysts Associated with the Ectopic/Impacted Upper Third Molars: Computed Tomography Analysis of Nasolacrimal Duct and Osteomeatal Complex Obstructions and Review of Literature

Abstract

Our first case represents a unique CT appearance of intracystic air-fluid level which is completely unusual for dentigerous cyst. Second case describes a first ever reported case of permanent acquired nasolacrimal duct obstruction due to compression by gigantic dentigerous cyst associated with upper third molar in an ectopic position at the moment of preoperative CT. Despite the fact that in both cases osteomeatal complex obstruction complicated the situations, the removal (with compressed lateral wall of the NLD) of giant lesions of the maxillary sinus via classic Caldwell-Luc approach allowed as well to resolve all functional disturbances successfully.