Abstract
Although the etiology of the odontogenic keratocyst is poorly understood, it probably originated from dental remnants. This is a case report of a 26-year-old white male patient who complained of a painful purulent lesion fistulating in the gingival region between teeth 12 and 13. Both teeth presented evidence of pulp vitality. During anamnesis the patient denied smoking, consumption of other toxic substances, and comorbidities. Moreover, he reported not knowing when the injury began. On clinical examination, a vestibular fistula located in the middle third was observed in the maxilla. In the radiographic examination, a well-delimited radiolucent lesion was observed with a discrete radiopaque lining. The established diagnostic hypothesis was lateral periodontal cyst. An excisional biopsy was performed, and the lesion underwent histopathologic examination, which revealed an odontogenic keratocyst. The patient is under follow-up and will be investigated for nevoid basal cell carcinoma syndrome.
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