title: Narrow-band imaging cystoscopy to evaluate bladder tumours--individual surgeon variability.
abstract: METHODS
  Diagnosis (exploratory cohort) Level of Evidence 2b.
  
  
  OBJECTIVE
  To assess individual urologist variability using narrow-band imaging (NBI) cystoscopy to evaluate bladder tumours.
  
  
  METHODS
  In all, 50 patients underwent white-light and NBI cystoscopy to evaluate for recurrent bladder tumours. Endoscopic images in each patient were independently viewed by four urologists assessing presence or absence of tumour. Their findings were correlated with biopsy results.
  
  
  RESULTS
  In all, 26 patients had recurrent tumour and 24 had benign histology. There were no significant differences among urologists detecting recurrent tumour or in determining final pathology.
  
  
  CONCLUSIONS
  There does not appear to be a 'learning curve' for adapting to NBI-surveillance cystoscopy in patients with bladder cancer.
authors.affiliation: Department of Urology, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA. herrh@mskcc.org
authors.forename: Harry
authors.initials: H
authors.lastname: Herr
authors.forename: Machele
authors.initials: M
authors.lastname: Donat
authors.forename: Guido
authors.initials: G
authors.lastname: Dalbagni
authors.forename: Jennifer
authors.initials: J
authors.lastname: Taylor
mesh_terms: D003558:Cystoscopy / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008027:Light; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis*; D015588:Observer Variation; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis*