title: Retroperitoneoscopic radiofrequency ablation of a solid renal mass.
abstract: OBJECTIVE
  To report a new technique for radiofrequency (RF) ablation of a solid renal mass.
  
  
  METHODS
  An 83-year-old man with a history of chronic renal insufficiency was found to have solid mass in the right kidney. Retroperitoneoscopic localization of the renal mass was accomplished using intraoperative ultrasonography. The lesion was treated with a 14-gauge RITA Starburst XL probe (Rita Medical Systems, Inc., Mountain View, CA).
  
  
  RESULTS
  The total treatment time included two cycles of 5.5 minutes. There were no intraoperative complications. Tissue desiccation was noted during treatment. A CT scan 48 hours after ablation showed a decrease in the density of the lesion suggestive of coagulation necrosis. The postoperative hospital course was uneventful.
  
  
  CONCLUSIONS
  The retroperitoneal laparoscopic technique is a feasible approach to performing RF ablation of a solid renal mass. It facilitates direct insertion of the RF probe, allows viewing and avoidance of adjacent structures such as bowel, and permits better staging by enabling biopsy of perirenal fatty tissue.
authors.affiliation: Department of Urology, Albert Einstein College of Medicine, New Hyde Park, New York 11040, USA. Pyohannes@hotmail.com
authors.forename: P
authors.initials: P
authors.lastname: Yohannes
authors.forename: P
authors.initials: P
authors.lastname: Pinto
authors.forename: P
authors.initials: P
authors.lastname: Rotariu
authors.forename: A D
authors.initials: AD
authors.lastname: Smith
authors.forename: B R
authors.initials: BR
authors.lastname: Lee
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017115:Catheter Ablation; D006801:Humans; D007432:Intraoperative Period; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery*; D010535:Laparoscopy; D008297:Male; D011184:Postoperative Period; D012187:Retroperitoneal Space; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014572:Urology / Q000379:methods