Pathology Quiz Case 2: Diagnosis

Diagnosis: Keratocystic odontogenic tumor (KCOT) of the maxilla

KCOT, formerly known as odontogenic keratocyst, is a benign neoplasm of odontogenic origin that is locally destructive, with a 0% to 62% recurrence rate after treatment.¹ Approximately 11% of jaw tumors are KCOTs, with a peak incidence in the second and third decades of life, although the tumors may occur at any age.² Most tumors are located in the posterior mandible; however, tumors of the maxilla are also seen.³