A case of odontogenic ghost cell tumor (OGCT) with clear cell components occurred in the mandible of a 63-yearold man. The tumor revealed ameloblastomatous type epithelial components together with clusters of ghost cells and dentinoid juxtaposed to the odontogenic epithelium. In addition, some areas of the tumor tissue showed sheets and islands of clear, glycogen-rich epithelial cells, separated by a thin fibrous connective tissue stroma. Both ameloblastic and clear cells showed positive immunoreactivities for cytokeratin 19 and AE1/3. It is not known whether this tumor represents a clear cell differentiation of a preexisting OGCT or a separate and distinct neoplasm derived de novo from odontogenic epithelium. This tumor was preferred the term clear cell odontogenic ghost cell tumor, which captures the clear cell components, one of the tumors most prominent distinguishing features

• 윤정훈(조선대학교 치과대학 구강병리학교실) | Jung Hoon Yoon 통신저자