title: [Long-term outcome of conservative surgery for kidney cancer: survival, blood pressure, and renal function].
abstract: OBJECTIVE
  Nephron-sparing surgery (NSS) for renal cell carcinoma (RCC) remains controversial for elective indications (low stage RCC in the presence of a normal contralateral kidney). In this single center study survival rate and, as novel aspects, the frequency of postoperative arterial hypertension and renal function parameters were investigated to evaluate safety and efficacy of NSS.
  
  
  METHODS
  The complete data of 248 patients operated nephron-sparing for RCC between 1975 and 1995 were evaluated. One hundred and seventy-five patients were treated for elective indication (95% with tumor stage T1 or T2), 73 patients for mandatory indication (bilateral tumors, solitary kidney, renal insufficiency). The mean follow-up was 75 months (maximum 23 years).
  
  
  RESULTS
  Mean tumor-size was lower under elective (3.8 cm) than under mandatory (4.7 cm) indication. Overall tumor-specific survival after 5 years for both indications was 88%. Comparing preoperative vs. follow-up values, arterial blood pressure and serum-creatinine values remained unchanged for both indications. The incidence of postoperative proteinuria (19% imperative, 11% elective indication) was strongly related to hypertension.
  
  
  CONCLUSIONS
  NSS for RCC under elective indication achieves patient survival comparable to the results of radical nephrectomy. The presented data do not indicate significant longterm complications such as arterial hypertension, proteinuria or deterioration of renal function as a result of glomerulosclerosis or hyperfiltration. This gives further argument for the concept of NSS in RCC as an alternative to radical nephrectomy in the presence of a healthy contralateral kidney.
authors.affiliation: Klinik für urologie, universitätskliniken des Saarlandes, 66421 Homburg/Saar, Allemagne. ulrich.humke@mail.uni-wuerzburg.de
authors.forename: U
authors.initials: U
authors.lastname: Humke
authors.forename: S
authors.initials: S
authors.lastname: Siemer
authors.forename: M
authors.initials: M
authors.lastname: Uder
authors.forename: M
authors.initials: M
authors.lastname: Ziegler
mesh_terms: D001794:Blood Pressure; D002292:Carcinoma, Renal Cell / Q000401:mortality / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007680:Kidney Neoplasms / Q000401:mortality / Q000503:physiopathology / Q000601:surgery*; D008875:Middle Aged; D012189:Retrospective Studies; D015996:Survival Rate; D013997:Time Factors