Calcifying odontogenic cyst or Gorlin cyst, was first described by Gorlin. It is an unusual and unique lesion, which may show characteristics of both a solid neoplasm and a cyst.This lesion occurs intraosseously as well as extraosseously, with about equal frequency in the mandible and maxilla (1:1). It has also been said that both the “calcifying odontogenic cyst” and the calcifying epithelial odontogenic tumor share a process of epithelial proliferation with subsequent calcification of some portions. Histologically calcifying cystic odontogenic cyst consists of ameloblastoma -like odontogenic epithelium with reverse polarization and calcifying ghost cells overlying a mature connective tissue with odontogenic rest. In this case report a middle aged patients lesion in the mandible is been discussed.
Key words: Calcifying epithelial odontogenic tumor, calcifying epithelial odontogenic cyst, ghost cells, Gorlin cyst.