A Case of Congenital Odontogenic Fibroma in a 2-year-old Patient

Abstract

A 2-year-old Japanese boy had a pedunculated, smooth, red polypoid lesion on the gingiva of the unerupted first deciduous molar area. It was 9×5×4mm in size. It had been present from birth, and had not increased in size. Excision was performed under local anethesia. The pathological diagnosis was peripheral odontogenic fibroma, histologically composed of stromal cells resembling that of the tooth germ while islands of odontogenic epithelium were scattered in this lesion. Calcification was not observed. His first and second deciduous molars began to erupt after the excision. At the time of follow-up examination 31 months later, the lesion had not recurred. Congenital odontogenic fibroma is a rare neoplasm and is a great help investigating its origin. It is also important to have a long followup examination for lower-aged children.