title: Comparison of laparoscopic radiofrequency ablation and open partial nephrectomy in patients with a small renal mass.
abstract: OBJECTIVE
  We have performed both open partial nephrectomy (OPN) and laparoscopic radiofrequency ablation (RFA) on selected patients since January 2007 and have been following these patients through serial laboratory assessments and computed tomography (CT). The purpose of the present study was to evaluate long-term oncologic outcomes and renal function status for laparoscopic RFA versus OPN at a minimum follow-up of 3 years.
  
  
  METHODS
  A total of 55 patients with exophytic, single small renal masses were treated with either OPN (n=14) or laparoscopic RFA (n=41) by a single surgeon. The indications for laparoscopic RFA were as follows: 1) cases with the greatest dimension of the renal mass <3 cm, and 2) cases in which the collecting system, renal calyx, and great vessels were free from the tumor margins by 1 cm.
  
  
  RESULTS
  The estimated blood loss (EBL), the operation time, and the mean number of hospital days was significantly lower in the laparoscopic RFA group than in the OPN group. Oncologic data did not differ significantly between the two groups. Creatine clearance levels did not differ significantly compared with those before the operation in either group.
  
  
  CONCLUSIONS
  Our data suggest excellent therapeutic outcomes with laparoscopic RFA with achievement of effective operative times, hospital stays, and EBL compared with OPN. According to our indications for laparoscopic RFA, laparoscopic RFA is an effective minimally invasive therapy for the treatment of small renal masses, yielding oncologic outcomes and renal function equivalent to those of OPN.
authors.affiliation: Department of Urology, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Chang Shik
authors.initials: CS
authors.lastname: Youn
authors.forename: Jong Mok
authors.initials: JM
authors.lastname: Park
authors.forename: Ji Yong
authors.initials: JY
authors.lastname: Lee
authors.forename: Ki Hak
authors.initials: KH
authors.lastname: Song
authors.forename: Yong Gil
authors.initials: YG
authors.lastname: Na
authors.forename: Chong Koo
authors.initials: CK
authors.lastname: Sul
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Lim
keywords: Catheter ablation; Kidney neoplasms; Nephrectomy
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