title: Relationship between biopsy Gleason score and radical prostatectomy specimen Gleason score in patients undergoing sextant vs 12 core biopsies.
abstract: OBJECTIVE
  Our goal is to analyze the degree of concordance between the Gleason score (GS) obtained in prostate biopsies and the one after radical prostatectomy. The intention is to know whether 12-core biopsy, instead of 6 (sextant biopsy), improves, or not, this correlation.
  
  
  METHODS
  A Cohort/prevalence study was conducted on 128 patients who underwent prostate biopsy and subsequent radical prostatectomy. Patients showing biopsy Gleason values greater or equal to 6 were selected as candidates for radical prostatectomy.
  
  
  RESULTS
  Mean age of the group of 128 patients was 62.9 years, with a mean PSA value of 8.53ng/ml. There was concordance between biopsy Gleason score and that obtained after radical prostatectomy in 63.28% of cases, while discordance was found in 36.72% of cases. There were not significant statistical differences after comparing results obtained between Gleason score concordance after 6 or 12-core biopsies and that obtained after radical prostatectomy.
  
  
  CONCLUSIONS
  We have noticed a low correlation between Gleason score after biopsy when it was compared with that obtained after radical prostatectomy, while these results are similar to those found in the literature. We did not find better results regarding Gleason score correlation after biopsies performed with 12 cores instead of 6.
authors.affiliation: Department of Urology, Hospital Universitario San Cecilio, Granada, Spain. arrabalp@ono.com
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Arrabal-Polo
authors.forename: Antonio
authors.initials: A
authors.lastname: Jiménez-Pacheco
authors.forename: José Luis
authors.initials: JL
authors.lastname: Mijan-Ortiz
authors.forename: Miguel
authors.initials: M
authors.lastname: Arrabal-Martín
authors.forename: Francisco
authors.initials: F
authors.lastname: Valle-Díaz de la Guardia
authors.forename: Fernando
authors.initials: F
authors.lastname: López-Carmona Pintado
authors.forename: Victor Manuel
authors.initials: VM
authors.lastname: López-León
authors.forename: Sergio
authors.initials: S
authors.lastname: Merino-Salas
authors.forename: Javier
authors.initials: J
authors.lastname: Tinaut-Ranera
authors.forename: Armando
authors.initials: A
authors.lastname: Zuluaga-Gómez
mesh_terms: D001707:Biopsy, Needle / Q000379:methods; D006801:Humans; D008297:Male; D011468:Prostatectomy; D011471:Prostatic Neoplasms / Q000145:classification / Q000473:pathology* / Q000601:surgery*