title: Robot-assisted partial nephrectomy: a comparison of the transperitoneal and retroperitoneal approaches.
abstract: OBJECTIVE
  To present the oncologic and functional outcomes of robot-assisted partial nephrectomy (RAPN) and analyze retroperitoneal and transperitoneal approaches.
  
  
  METHODS
  RAPN was performed on 103 patients; 44 patients underwent a retroperitoneal and 59 a transperitoneal approach. Demographic, operative, and postoperative data was collected and retrospectively analyzed on all patients.
  
  
  RESULTS
  Overall average warm ischemic time was 20.4 (0-48) minutes, total operative time was 175.3 (85-330) minutes, and estimated blood loss was 258.1 (20-3100) mL. When retroperitoneal and transperitoneal approaches were compared, there was no significant difference in warm ischemic time but a significant reduction in both estimated blood loss and total operative time in the retroperitoneal group.
  
  
  CONCLUSIONS
  Our series would suggest that if performed by a surgeon familiar with a laparoscopic retroperitoneal approach to renal surgery, retroperitoneal RAPN is at least equivalent to the more common transperitoneal approach in the outcomes assessed.
authors: Department of Surgery and Cancer, Imperial College, London, United Kingdom. a.hughes-hallett@imperial.ac.uk
authors: Archie
authors: A
authors: Hughes-Hallett
authors: Prasad
authors: P
authors: Patki
authors: Nilay
authors: N
authors: Patel
authors: Neil J
authors: NJ
authors: Barber
authors: Mark
authors: M
authors: Sullivan
authors: Ranjan
authors: R
authors: Thilagarajah
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005500:Follow-Up Studies; D006801:Humans; D007680:Kidney Neoplasms / Q000601:surgery*; D010535:Laparoscopy / Q000379:methods*; D008875:Middle Aged; D009392:Nephrectomy / Q000379:methods*; D061646:Operative Time; D011184:Postoperative Period; D012187:Retroperitoneal Space / Q000601:surgery; D012189:Retrospective Studies; D012371:Robotics / Q000379:methods*; D016896:Treatment Outcome