A Case of Recurrent Calcifying Odontogenic Cyst

Immunohistochemical Study

Abstract

A case of a recurrent calcifying odontogenic cyst with immunohistochemical finding was reported. Apparently, the reactions to tenascin and KL-1 (cytokeratins) were stronger in the initial lesion than in the recurrent lesion around ghost cells and calcified bodies. The initial lesion contained many calcified bodies and had an indefinite cyst wall, while the recurrent lesion contained of a few calcified bodies and had a rigid cyst wall. In the recurrent lesion, the ratio between basal cells and calcified bodies is much higher than that in the initial lesion, which may induce the transformation into tumor.