Figure 1.

Preoperative and postoperative endoscopic examination. HIFU, (A–E). PRA, (F–J). (A, F) Preoperative nasal endoscopy. (B, G) The results of the endoscopic examination showed that both HIFU and PRA significantly reduced the secretion of turbinate edema and AR at 1 month. (C, H) Nasal endoscopy of 3 months. (D, I) The PAR group showed swollen turbinate and a small amount of secretion compared with the HIFU group at 6 months. (E, J) The swollen turbinates and secretions were seen in the PRA group compared with those in the HIFU group at 12 months. HIFU – high-intensity focused ultrasound; PRA – plasma radiofrequency ablation.