DefinePK

Abstract

Keratocysticodontogenic tumor (KCOT) is a benign tumor that has a high recurrence rate. It mostly involves the mandible and occasionally invades maxillarycanine area. Involvement of the sinus is very rare. A case of a 24 yearold young lady with KCOT involving the maxillary sinus is reported. The panoramic radiograph showed 1.5 X 1.5 cmwell circumscribed radiolucency that surrounded an impacted right wisdomupper tooth which involved the maxillary sinus. “Dentigerous cyst” and “follicula r cyst” were the differential diagnosis. Accordingly,enculation of the lesion under local anesthesia was the only treatment. Thehistologicaldiagnosis of the specimen was “keratocysticodontogenic tumor”. The failure of including KCOT in the differential diagnosis in this reported case increased the risk of recurrence and resulted inthe need for a long follow up.