Participants
Adult CRS patients with or without nasal polyps who required sinonasal
surgery and were unresponsive to medication treatment were recruited
from a sub-specialized rhinology clinic. To be included, the patients
had to be ≥ 18years of age with bilateral chronic or recurrent
rhinosinusitis, and have a Lund-MacKay (LM) CT scan score difference ≤ 3
between the right and left sides of the nasal cavity. Patients were
excluded if they were unable or unwilling to comply with the required
postoperative visits for data collection, or if they were ineligible for
informed consent, displayed unilateral disease, had an olfactory cleft
obstruction on preoperative CT scan or pre/perioperative endoscopic
finding, had an underlying bleeding disorder, or a CT scan revealed a
significant difference in disease status between the nasal cavities (LM
score difference > 3).