Adenomatoid odontogenic tumor associated with calcifying epithelial odontogenic tumor

A case of odontogenic tumor which contained areas diagnostic for both adenomatoid odontogenic tumor and calcifying epithelial odontogenic tumor arising in the upper left anterior region in a 17-year-old Japanese female is reported. The histopathological observation suggested that the lesion represented primarily adenomatoid odontogenic tumor in which multiple foci of calcifying epithelial odontogenic tumor had developed.