title: Prognostic value of various morphometric measurements of tumour extent in prostate needle core tissue.
abstract: OBJECTIVE
  Predicting prostatic cancer patients' outcome is a major objective for clinicians and patients. Several nomograms are currently implemented prior to treatment to help predict clinical and pathological outcome. The aim of this study was to investigate the prognostic significance of morphometric measurements of cancer on the needle biopsy specimen in relation to the final pathological stage or the biochemical failure status following radical prostatectomy, and to determine which measurement of tumour length in cases with discontinuous foci of cancer (DFC) is most reliably reflective of the pathological stage.
  
  
  RESULTS
  Of the 100 patients included in this study, 34% had high-stage disease (pT >or= 3 and/or pN1) and 16% experienced biochemical recurrence. The analysis showed that fraction of positive cores, total percentage of cancer and both total and greatest millimetric cancer lengths were the variables most closely associated with pathological stage and biochemical failure status.
  
  
  CONCLUSIONS
  This study confirms the prognostic value of recording tumour extent in prostatic needle biopsy reporting. However, the results are inconclusive in determining the best method to record tumour length in cores with DFC and larger studies are needed to answer this question fully.
authors.affiliation: Department of Pathology, McGill University Health Center, Montreal, QC, Canada.
authors.forename: F
authors.initials: F
authors.lastname: Brimo
authors.forename: R T
authors.initials: RT
authors.lastname: Vollmer
authors.forename: J
authors.initials: J
authors.lastname: Corcos
authors.forename: K
authors.initials: K
authors.lastname: Kotar
authors.forename: L R
authors.initials: LR
authors.lastname: Bégin
authors.forename: P A
authors.initials: PA
authors.lastname: Humphrey
authors.forename: T A
authors.initials: TA
authors.lastname: Bismar