Patients with chronic rhinosinusitis with polyposis who were to undergo basic sinus surgery ( antrostomy , ethmoidectomy , and polypectomy ) were randomized to either debridement ( at postoperative weeks @ and @ ) or no debridement , and their outcomes were assessed at @ weeks and at @ months with the Lund-Kennedy Endoscopic Score ( LKES ) , the Sino-Nasal Outcome Test-@ ( SNOT-@ ) , a visual analog scale for postoperative pain , and a novel scoring system for postoperative inconvenience ( Post-Operative Inconvenience Scale ; POIS ) .