Opacification of all paranasal sinuses, nasal cavity and ethmoidal air cells bilaterally by polypoid mucosal thickening and retained secretions.
Numerous sinonasal polyps are noted with intermediate to high signals on T1 and intermediate to low signal intensity on T2 are noted with smooth outline. A nasopharyngeal polypoidal extension is noted compromising airway is noted. Following gadolinium, thin linear mucosal enhancement is noted, the polyps are non-enhancing. No suspicious masses.
No sinus walls bony erosions. Clear peri-antral fat planes. Intact skull base and lamina papyracea. No intra-cranial or orbital extensions.
Incidentally noted left sphenoid ridge wide dural-based lesion with intense homogeneous enhancement denoting left sphenoid ridge meningioma.