Fig. 3
From: Impact of mucosal biofilm and bony osteitis on chronic rhinosinusitis with nasal polyps
e Mucosal grade I: mild inflammation (star) and focal degeneration of the epithelium (arrow). f Mucosal grade II: moderate inflammation (star) and hyperplastic surface epithelium (arrow). g Mucosal grade III: severe inflammatory cellular infiltrate (star). h Eosinophil rich inflammatory cellular infiltrate (arrows)
