Report of three odontogenic keratocysts with extensive bony expansion

Introduction: Odontogenic keratocyst )OKC) is an epithelial-derived odontogenic cyst. WHO classified OKC as an odontogenic keratocyst tumor (KCOT) due to its neoplastic nature. OKC is the third most common jaw cyst, usually with no clinical symptoms. Due to its high recurrence rate, correct diagnosis and appropriate treatment plan are essential.Case presentation: This report presents three KCOT cases with bony expansion and relatively variable clinical findings.Conclusion: The most significant lesions in the differential diagnosis of OKC are dentigerous cysts, odontogenic myxoma, ameloblastoma and simple bone cyst. Due to differences in the treatment plans of these lesions, and since they are treated in a more limited manner, exact evaluation of these lesions from clinical, radiographic and histopathologic viewpoints is very important, with significant effects on the therapeutic procedure and recurrence of the lesion. Key words: Histopathology, Jaw cysts, Odontogenic keratocyst.