title: [Partial Nephrectomy in cT1 Renal Tumours: Conventional Laparoscopic Partial Nephrectomy Compared with LESS Partial Nephrectomy in SITUS Technique].
abstract: BACKGROUND
  Partial nephrectomy is the treatment of choice for clinical stage 1 renal tumours. Open partial nephrectomy is the standard operative technique. The use of minimally-invasive strategies such as laparoscopic, robot-assisted partial nephrectomy or laparoendoscopic single site (LESS) partial nephrectomy has increased in recent years.
  
  
  METHODS
  In this retrospective study, patients undergoing laparoscopic partial nephrectomy between December 2008 and November 2013 were evaluated. All patients presented with renal lesions suspicious for malignancy. Operations were performed as conventional laparoscopic transperitoneal partial nephrectomies (cLPN) or LESS partial nephrectomies (LESS-PN) in SITUS technique (single incision transumbilical surgery). The aim of the study was to compare perioperative outcome parameters such as duration of surgery, time of ischaemia, complications, need for transfusion, conversion rates, changes in renal function and duration of hospital stay in both groups.
  
  
  RESULTS
  A total of 85 laparoscopic partial nephrectomies were performed in this study (72 cLPN and 13 LESS-PN). The average tumour size was 2.68±1.47 cm (cLPN) vs. 2.46±1.11 cm (LESS-PN). The mean duration of surgery was 175.17±50.026 min (cLPN) and 185.77±35.991 min (LESS-PN). 45 (62.5%) operations (cLPN) vs. 10 (76.9%) (LESS-PN) were performed in zero-ischaemia technique. There were no significant differences in perioperative outcome parameters between both groups. Postoperative complication rates (Clavien-Dindo≥3) were 11.1% (cLPN) vs. 7.7% (LESS-PN).
  
  
  CONCLUSIONS
  LESS partial nephrectomy in SITUS technique is an attractive alternative to conventional laparoscopic and open partial nephrectomy.
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: M
authors.initials: M
authors.lastname: Wolters
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: L
authors.initials: L
authors.lastname: Wohlatz
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: T
authors.initials: T
authors.lastname: Neumann
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: S
authors.initials: S
authors.lastname: Jutzi
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: I
authors.initials: I
authors.lastname: Peters
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: C
authors.initials: C
authors.lastname: von Klot
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: F
authors.initials: F
authors.lastname: Imkamp
authors.affiliation: Institut für Hygiene/Krankenhaushygiene, Universitätsklinikum Leipzig, Leipzig.
authors.forename: B
authors.initials: B
authors.lastname: Lutze
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: M A
authors.initials: MA
authors.lastname: Kuczyk
authors.affiliation: Klinik für Urologie und Andrologie, Landeskrankenhaus Hall in Tirol (LKH), Hall in Tirol, Österreich.
authors.forename: U
authors.initials: U
authors.lastname: Nagele
authors.affiliation: Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover.
authors.forename: T R W
authors.initials: TR
authors.lastname: Herrmann
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery*; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D009367:Neoplasm Staging; D009392:Nephrectomy / Q000379:methods*; D061646:Operative Time; D012189:Retrospective Studies; D047368:Tumor Burden