Histochemical staining showed PAS-positive and diastase-labile intracytoplasmic material consistent with glycogen.<h4>Conclusion</h4>Our study highlights the potential diagnostic significance of dentinoid (although reportedly seen in only 7% of cases), along with CK5/6 immunopositivity, in supporting the histologic diagnosis of CCOC among a variety of neoplasia in its differential diagnosis. The gene discussed is KRT5; the disease is neoplasm.