Abstract
A keratocystic odontogenic tumor (KCOT) is a benign intraosseous tumor of odontogenic origin with a characteristic lining of parakeratinized stratified squamous epithelium and is characterized by a potential for aggressive, infiltrative behavior. An 11-year-old boy complained of delayed eruption of a lower second molar. Clinical examination revealed intra- and extraoral soft, painless swelling. The mandibular right second molar was impacted. The panoramic image showed a large radiolucency lesion extending from the mandibular posterior right body to the ascending ramus of the mandible. The unerupted mandibular right third molar was dislocated to the mandibular ramus. A computed tomography scan showed expansion of the buccal and lingual bone plate in the right mandibular body. After the incisional biopsy, we diagnosed KCOT. We performed to marsupialization of lesion for decompression and consequent lesion size reduction. After 1 year, we performed enucleation for complete KCOT removal and the extraction of the third mandibular molar. This treatment protocol was an effective and conservative approach for the management of the KCOT. After 3 years, we observed no signs of recurrence.
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