Abstract
A 15-year-old female patient presented to the oral clinic complaining of an asymptomatic swelling in the left canine area, with purple coloration of the recovering mucosa and with a 3-year history. Radiography presented a well-delimited osteolytic lesion associated with an impacted canine (left maxillary side) and causing displacement of the maxillary left lateral incisor. The lesion was unilocular, radiolucent and oval and measured 13.25 mm in its largest diameter. The initial diagnosis hypothesis was dentigerous cyst. Treatment was complete removal of the lesion with subsequent curettage. Histopathologic analysis showed a cystic capsule fragment composed of fibrous connective tissue partially covered by stratified squamous epithelium, similar to ameloblasts, with inverted nuclear polarity. In the epithelium, an abundant number of calcifications and ghost cells were also observed. The conclusive diagnosis was calcifying odontogenic cyst. On follow-up examination 6 months after surgery, no recurrence of the lesion was observed.
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