Ossifying Fibromas of the Orbital Roof
This paper reports on three cases of fibro-osseous tumors that created lytic defects in the orbital roof. Their clinical and radiographic appearances led to a pre-operative diagnosis of either a mucocele or an epidermoid cyst. Histopathologically, however, these lesions were interpreted as benign ossifying fibromas. Ossifying fibromas have received scant attention in the ophthalmic literature and are often subsumed with fibrous dysplasia (Jakobiec & Jones, 1976). The purpose of this paper is to present the clinical, radiographic, and pathologic differences between ossifying fibroma and fibrous dysplasia, and to highhght the ‘cystic variant’ of ossifying fibroma that our patients developed.
KeywordsFibrous Dysplasia Frontal Sinus Giant Cell Tumor Epidermoid Cyst Left Orbit
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