Abstract
Odontogenic keratocyst (OKC) is a benign cyst originated from dental blade remnants, but has aggressive biological behavior with great recurrence potential. This report describes an OKC occurrence in a 15-year-old melanoderma male patient that reported a swelling in the mandible posterior region. The computed tomography revealed a well delimited and slightly corticalized hypodense image involving the mandible posterior teeth. It was performed a punch biopsy and the histopathological analysis evidenced fibrous cystic capsule with discrete mononuclear inflammatory infiltrate, hemorrhagic areas, small mineralized tissue fragments compatible with bone tissue and no signs of malignancy, pointing OKC diagnosis. After the lesion marsupialization and a periodic saline solution irrigation, the enucleation treatment was realized with a large safety margin. After 10 months, a recurrence was observed and the same surgical procedure was performed with a shorter period of saline solution irrigation. He is under follow-up for 2 years with no signs of recurrence.
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