Radiofrequency Ablation of a Rare Case of an Intraosseous Hibernoma Causing Therapy-refractory Pain

and the smaller-diameter stents would have been more likely to cause obstruction and would have been more difficult to exchange in the future (1). A three-staged combined procedure (2) involving placement of an antegrade nephrostomy catheter/nephroureterostomy catheter, conversion to a retrograde nephroureteral catheter, and, finally, transileal exchange of the retrograde nephroureteral stent and removal of the antegrade nephrostomy tube was also not considered appropriate despite a success rate greater than 90% because, again, this would involve positioning the patient prone to initially insert the antegrade nephrostomy. In most cases of ileal conduit obstruction and urosepsis, we would advocate percutaneous nephrostomy to decompress the system and antibiotic treatment with retrograde exchange of ureteroileal stents via the ileal conduit at a later date. However, in the present case, positioning the patient prone to perform nephrostomy insertion was considered more difficult as a result of recent laparotomy and large parastomal hernia. A retrograde transileal approach reduced the risk associated with the performance of percutaneous nephrostomy and