title: [Conservative endoscopic retrograde treatment of upper urinary tract tumors: retrospective analysis of the last 105 cases].
abstract: BACKGROUND
  Modern flexible ureterorenoscopy allows a retrograde approach to urothelial tumors in the upper urinary tract (UUTT) of small dimensions (<1.5 cm), of low grade and non-invasive. The percutaneous renal approach, although more invasive, provides an alternative treatment in case of larger dimension neoplasia or difficult retrograde access. The key to the success of endoscopic treatment of UUTT is an accurate patient selection. We will bring our experience in the treatment of UUTT by conservative endoscopic retrograde treatment.
  
  
  METHODS
  Treatment through endoscopic retrograde approach with rigid or flexible ureterorenoscopy has been applied to 105 patients; lesions were treated with electrocution or lasers using thin laser fibers type Ho:YAG. We evaluated the recurrence rate and the intra- and perioperative complications.
  
  
  RESULTS
  The recurrence rate was equal to 30.4%. In no case was it necessary to recur to blood transfusion; 15% of wall perforations treated in a conservative manner occurred without following complications.
  
  
  CONCLUSIONS
  Technological innovations, miniaturization and the increase of energy sources, such as fiber laser Holmium, have improved the management of endoscopic instruments for upper urinary tract tumors. The endoscopic retrograde conservative treatment is considered a valid alternative approach in the case of low-stage tumors, low-grading and small in dimensions.
authors.affiliation: Clinica Urologica, Università degli Studi di Cagliari, Cagliari, Italy.
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Fanari
authors.forename: Simona
authors.initials: S
authors.lastname: Serra
authors.forename: Antonello
authors.initials: A
authors.lastname: De Lisa
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002295:Carcinoma, Transitional Cell / Q000601:surgery*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000601:surgery*; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014516:Ureteral Neoplasms / Q000601:surgery*; D018666:Ureteroscopy / Q000379:methods