LAUSR

Background Juvenile psammomatoid ossifying fibroma (JPOF) is a rare, benign fibro-osseous lesion with a mean patient age of 16-33 years. JPOFs present as bony expansion, invasion, and destruction of surrounding tissue. Objective To report a case of recurrent JPOF. Case Report We present a case of recurrent JPOF. An 8-year-old girl reported to our department with the chief complaint of gradual painless swelling in the chin. The oral examination revealed a hard and nontender swelling in the anterior region of the mandible. The orthopantomogram revealed a radiolucent mass with ill-defined borders. The computed tomographic scan showed a nearly round expansile lesion, which showed multilocular radiolucency, 4.3 cm × 3.0 cm in size, and with an indefinite border. Postoperative histopathological diagnosis was reported as cemento-ossifying fibroma. Before reporting to us, the patient had been admitted to another hospital 2 years earlier with painless swelling in a similar position of the mandible. The clinical manifestations were similar to those this time. Compared with this episode, the lesion scope was small, 2.0 cm × 3.0 cm in size. The postoperative histopathologic diagnosis was reported as odontogenic myxoma at that time. Discussion Two years ago, histopathology showed a fibrocellular stroma with myxoid areas, and no calcifications were observed. In this episode, microscopic examination revealed numerous spherical ossicles resembling psammoma bodies in the cellular fibrous tissue, which are a pathognomonic histopathologic feature of JPOF. JPOFs present with aggressive local growth and high risk of recurrence. Therefore, accurate pathological diagnosis and complete surgical resection are required.