Juvenile ossifying fibroma of the orbit. Case report and review of the literature

A case of junvenile ossifying fibroma (JOF) expanding the left side of the ethmoidal bone and partially invading the homolateral orbital cavity is presented. The patient was a seven-year-old boy who experienced painless progressive proptosis of the left eye and mild limitation of the ocular excursion in the upper-external direction of gaze. A review of the literature and a discussion of clinical, radiographic and histopathologic findings are reported to differentiate JOF from other fibro-osseous orbital lesions bordering on cranial cavities. The importance of thin (1.5 mm) computed tomographic scanning sections with cross-sectional multiplanar image reconstructions is stressed for determining the right surgical approach.