Fig. 3. A and B. Axial computed tomographic (CT) images of the osteomeatal complex show the heterogeneous osteogenic expansile lesion completely occupying the left antrum with displacement of the lateral nasal wall. A smaller completely ossified lesion in the right antrum is also noticed. C and D. Coronal CT images show expansile destruction of the left maxillary sinus and a smaller lesion in the right maxillary sinus.