Partial opacification of both maxillary and sphenoid sinuses and near total opacification of both frontal sinuses and ethmoid air cells with soft tissue density contents, mucosal thickening, retained secretions and retention cysts. Rarefaction of ethmoid bony septae, nasal turbinates and upper part of bony nasal septum are also noted. Mucosal obstruction, widening and remodeling of the ostiomeatal complexes and sphenoethmoidal recesses.