Hamadan University of Medical Sciences Avicenna Journal of Dental Research 2423-7582 3 1 2011 06 30 Cemento-ossifying Fibroma: Report of Two Interesting Cases 62 66 EN M Imanimoghaddam S.H Hoseini Zarch A Javadian Langaroodi S Nemati Journal Article 2010 03 16 2010 07 16 Cemento-ossifying fibroma is a fibro-osseous lesion that has benign neoplastic behavior. We report two cases of cemento-ossifying fibroma (COF) and review the literature in order to study the imaging findings of COF. It is almost unavoidable that diagnosis of fibrous dysplasia from COF will be complicated by the fact that some pathologic features are shared by both lesions. So the final definitive diagnosis requires evaluation of the radiographic features.