Fig. 1.

Radiographic and morphologic features of a case of central odontogenic fibroma with secondary gingival involvement. A. Panorex showing an uni-locular lesion localized at the superior margin of the right angle of the mandible and limited by sclerotic border (arrowhead). B. Resected lesion with impacted tooth. C. Panorex at 12 months after surgery showing bone healing with no evidence of recurrence. D. Tissue section showing tubules, nests and irregular branched strands of epithelial cells in an fibrous connective background with focal myxoid areas (haematoxylin-eosin stain, original magnification ×200). E. Van Gieson staining showing fibrous tissue (original magnification ×200). F. Haematoxylin-eosin stain showing areas of myxoid tissue (haematoxylin-eosin stain, original magnification ×200).