Definition: An odontogenic epithelium neoplasm with a thin keratinized lining. This entity was previously named odontogenic keratocyst (OKC).
Location: Posterior mandible and ramus (most common) but can occur anywhere in the maxilla or mandible.
Edge: Well-defined to well-localized.
Shape: Round to no identifiable shape.
Internal: Radiolucent (unilocular or multilocular).
Other: Tendency to grow along the jaw with minimal expansion.
Number: Single. If multiple, an underlying syndrome should be considered (basal cell nevus syndrome/Gorlin-Goltz syndrome).
(Click image to enlarge)
Keratocystic odontogenic tumor – right posterior mandible
Keratocystic odontogenic tumor – anterior mandible