Peripheral Calcifying Odontogenic Cyst: First report in Japan

Abstract

A peripheral calcifying odontogenic cyst (PCOC) was observed in a 9 year-old Japanese boy. The patient visited our hospital with a chief complaint of swelling on the palatal aspect of the oral mucosa. He had felt the slowly growing lesion without pain for 3 months. Physical examination showed a firm submucosal mass approximately 1 cm in diameter in the palatal mucosa between the maxillary right central and lateral incisors. Based on clinical data, the lesion was thought to be an epulis; however, histological examination revealed a calcifying odontogenic cyst (COC). Follow-up examinations for over 1 year indicated no recurrence of the tumor. Although many cases of COC have been reported, this is the first case of PCOC in Japan suggesting racial differences in the incidence.