title: Laparoscopic Nephron Sparing Surgery Assisted with Laparoscopic Ultrasonography on Centrally Located Renal Tumor - Single Center Experience.
abstract: OBJECTIVE
  To investigate the clinical value of laparoscopic nephron sparing surgery (LNSS) assisted with laparoscopic ultrasonography (LUS) on centrally located renal tumors.
  
  
  METHODS
  Clinical data of 19 patients who underwent LNSS on centrally located renal tumors assisted with LUS were retrospectively analyzed. LUS was used to confirm the location, size, blood supply, and boundary of renal tumors, and to confirm that the tumor was removed completely with negative margin.
  
  
  RESULTS
  The 19 centrally located renal tumors were deep in renal parenchyma without obvious convex. Eleven cases were in the middle of the kidney, 3 cases were in the upper pole, and 5 cases were in the inferior pole. The tumor size was in the range 1.0-3.9 cm, with an average of 2.46 cm. The pathological results were 13 cases of renal clear cell carcinoma, 1 case of reninoma, 1 case of renal cyst, and 3 cases of angioleiomyolipoma. The surgical margins were negative in all 19 cases.
  
  
  CONCLUSIONS
  LUS has a high clinical value in LNNS on centrally located renal tumors and it helps to determine the location of centrally located tumors and guarantee negative margins.
authors.affiliation: Department of Urology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Peking Union Medical College, Beijing, China.
authors.forename: Dexin
authors.initials: D
authors.lastname: Dong
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Ji
authors.forename: Hanzhong
authors.initials: H
authors.lastname: Li
authors.forename: Weigang
authors.initials: W
authors.lastname: Yan
authors.forename: Yushi
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology / Q000601:surgery*; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy / Q000379:methods*; D009399:Nephrons; D059351:Organ Sparing Treatments; D012189:Retrospective Studies; D025321:Surgery, Computer-Assisted; D018084:Ultrasonography, Interventional; D055815:Young Adult