Calcifying Epithelial Odontogenic Tumor: Report of a Case

The calcifying epithelial odontogenic tumor (ceot)، also known as the pindborg tumor، is a benign and rare odontogenic tumor accounting for 0.4-3 percent of all odontogenic tumors. few reports of the incidence of this tumor exist in iran. the most frequent location is the mandibular pr emolar and molar area; less frequently the lesion is found in the maxilla. in clinical features، a painless slow-growing swelling will be seen. micr oscopically large sheets of epithelial cells in few fibrous stroma، large areas of amorphous، eosinophilic hyalinized (amyloid-like) material and calcification in concentric rings formation within the amyloid-like mate rial will be detected. the authors report a peculiar case of pindborg tum or characterized by a rare localization of the lesion extending from anter ior to the posterior of the upper jaw and by the young age of the patient.