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Clinical Problem Solving: Pathology
Sep 2011

Pathology Quiz Case 2: Diagnosis

Author Affiliations
 

SECTION EDITOR: JULIA C. IEZZONI, MD

Arch Otolaryngol Head Neck Surg. 2011;137(9):966-967. doi:10.1001/archoto.2011.151-b

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

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