Fig. 3From: Outcomes of endoscopic management of benign maxillary sinus lesions 5-year experience, non-randomized clinical trialsSurgical steps of CFA. A Wide sublabial incision corresponding to canine fossa and dissection of the periosteum to make good exposure. B Penetrating the thin bone of the fossa using diamond burr and widening of the opening. C Residual part on the lateral wall which was removed by using shaver. D Complete removal of the polypBack to article page