Effects of Cryotherapy on the Maxillary Antrostomy Patency in a Rabbit Model of Chronic Rhinosinusitis

Figure 5

The histological exam of mucosa around the ostia at 4 weeks in the cryotreated group revealing epithelial hyperplasia, scattered leukocytes, and moderate subepithelial fibrosis (white arrow). H&E stain, bar = 20 μm.