What are the differential diagnoses of silent sinus syndrome?
Congenital maxillary sinus hypoplasia; post-traumatic maxillary sinus deformity; inferior orbital decompression; mucocele; expansion of sinus due to build up of secretions; chronic sinusitis with mucoperiosteal thickening.
The right maxillary sinus is small in size, atelectatic and totally opacified by pathological soft tissue with obliteration of the right ostiomeatal complex, the uncinate process is superiorly and laterally displaced in direct contact with inferomedial wall of the right orbit. Slight inferior bowing of the right orbital floor, lateral displacement of the right middle and inferior turbinates. Mild mucosal lining thickening of the ethmoid air cells and right sphenoid sinus compartment.