Calcifying odontogenic cyst: A 26-year retrospective clinicopathological analysis and immunohistochemical study.

The prevalence of COC among all odontogenic cysts was 3.5%, representing an uncommon lesion. Immunohistochemical analysis suggested that COX-2 does not participate in lesion progression. The cell proliferation index of COC was low, as demonstrated by the expression of CD1, suggesting a proliferative profile compatible with more indolent lesions. Odontogenic cysts, odontogenic tumors, epidemiology, immunohistochemistry, cell proliferation.