A Safety and Tolerability of Circumferential Anal Canal Radiofrequency Ablation For Anal Intraepithelial Neoplasia

Anal canal RFA is performed to the full anal canal, 3 cm above the dentate line to the anocutaneous line proximal to the verge. The procedure entails Barrx60 ablation device, introducing the device into the anus through the anoscope, placing the electrode surface in contact with the target tissue and delivering 3 bursts of energy in rapid succession at an energy density setting of 12 J/cm2.