No abstract

This new staging system for IP provides information about prognosis (as operationally defined by RR) for IP managed by advanced endoscopic techniques. In contrast, other staging systems for IP reflect surgeon's judgment rather than outcomes data. This new classification for IP provides important objective data for preoperative planning and patient counseling.

No abstract

Frontal recess pneumatization patterns differ in the Korean and Caucasian adult populations. Because corresponding differences in skull base length were not identified, these differences seem likely to reflect other factors. Such information has clinical significance for frontal recess surgery in these patient populations.

Osteitis involves inflammatory changes in the underlying bone that may lead to recalcitrant CRS. Osteitis is associated with worsened measures of disease severity such as CT, endoscopy, and olfactory scores, and affects the degree of improvement in quality-of-life measures after both medical and surgical treatment. Future studies directed at characterizing the underlying molecular mechanisms including earlier and precise identification may improve our ability to treat this significant aspect of CRS.