title: Persistence, recurrence, and progression rates of superficial bladder tumours after resection using the differentiated technique.
abstract: OBJECTIVE
  To investigate whether the differentiated resection technique for excising superficial bladder cancer leads to higher recurrence and progression rates as compared with regular resection.
  
  
  METHODS
  We evaluated 163 patients, 66 undergoing a differentiated and 97 a regular resection. All patients underwent a routine second resection within 6-10 weeks. Recurrence and progression rates as well as tumour persistence on second resection were analyzed.
  
  
  RESULTS
  Patients with differentiated resections of bladder tumours did not have higher tumour recurrence and progression rates. Also, these patients had a significantly higher percentage of tumour-free second resections (p = 0.03).
  
  
  CONCLUSIONS
  The differentiated resection technique for excising superficial bladder cancer has no negative influence on recurrence and progression rates, but it leads to a reduced tumour persistence.
authors.affiliation: Abteilungen fur Urologie, Universitatsklinikum Mannheim, Germany. sigrun.langbein@web.de
authors.forename: S
authors.initials: S
authors.lastname: Langbein
authors.forename: K
authors.initials: K
authors.lastname: Badawi
authors.forename: A
authors.initials: A
authors.lastname: Haecker
authors.forename: C
authors.initials: C
authors.lastname: Weiss
authors.forename: M
authors.initials: M
authors.lastname: Hatzinger
authors.forename: P
authors.initials: P
authors.lastname: Alken
authors.forename: M
authors.initials: M
authors.lastname: Siegsmund
mesh_terms: D000368:Aged; D002295:Carcinoma, Transitional Cell / Q000401:mortality / Q000473:pathology* / Q000601:surgery*; D015653:Cystectomy / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D009367:Neoplasm Staging; D018365:Neoplasm, Residual; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome; D001749:Urinary Bladder Neoplasms / Q000401:mortality / Q000473:pathology* / Q000601:surgery*; D020535:Video-Assisted Surgery