PERIPHERAL CALCIFYING ODONTOGENIC CYST: DIAGNOSTIC CHALLENGE

A 62-year-old male patient with light brown skin color sought the stomatology clinic with complaint of cyst in the inferior alveolar ridge for 2 months without symptoms. Extraoral examination showed no alterations. Intraoral examination presented nodular sessile lesion with delimited boundary and the same color of the adjacent mucosa that measured approximately 10 mm in the left inferior alveolar ridge, on canine tooth area, without trauma history association. Periapical radiography was requested that evidenced a cup-shaped resorption area. With a diagnostic hypotheses of peripheral giant cell lesion and peripheral ossifying fibroma, an excisional biopsy was performed, and treatment of the bone resorption was started. The anatomopathologic analysis showed a fragment of cystic lesion coated by stratified squamous epithelium with arch projections, ghost cells, and amorphous lobular mass, confirming the diagnosis of peripheral calcifying odontogenic cyst. The patient remains on clinic and image control during 8 months without signs of recurrence.