Percutaneous Radiofrequency Ablation of Parietal Endometriosis (PRFA)

Treatment is carried out under local anaesthesia after surgical asepsis, in interventional radiology room. Radiofrequency needles are inserted percutaneously under ultrasound guidance. Number of needles depends on the size of lesion (1 or 2 or 3 needles). In case of proximity between lesion and peritoneum, artificial ascites can be performed. Treatment is carried out in accordance with device's instructions for use (thyroid nodules treatment algorithm), with a gradual increase in power every 5 minutes, without exceeding the maximum authorised power (depending on number and length of needles). State of coagulation is monitored under visual ultrasound control of ablation area (diffusion of Co bubbles), until a decrease in effective power is obtained. Several ablation zones are performed on the same nodule with overlapping of the different impacts. An ice pack is applied to the treated area. An analgesic PO treatment of step 1 and/or 2 is prescribed for 5 days.