chronic, acute, frontal, fungal, bacterial, allergic, recurrent, paranasal, maxillary, sphenoid, purulent, infectious, invasive, suppurative, nasal, nosocomial, hyperplastic, severe, pediatric, subacute, ethmoid, uncomplicated, secondary, persistent, ethmoidal, acquired, refractory, complicated, bilateral, associated, infective, unilateral, concomitant, sphenoidal, untreated, mild, fulminant, isolated, suspected, inflammatory, adjacent, polypoid, viral, nonallergic, concurrent, obstructive, noninvasive, occult, standing, postoperative, odontogenic, osteolytic, accessory, pneumococcal, granulomatous, resultant, indolent, rhino, symptomatic, atrophic, totreat, radiographic, recalcitrant, staphylococcal, parasitic, frank, cavernous, ipsilateral, existing