title: [Predictability of Gleason score and reduction time (tau) of prostatic volume after castration for the prognosis of prostatic cancer].
abstract: OBJECTIVE
  The efficacy of the reduction time (tau) after castration as a prognostic factor was examined by comparing to Gleason score.
  
  
  METHODS
  The change of prostatic volume after castration was observed from the castration to 3 months after in 24 cases of prostatic cancer. Prostatic volume was examined by transrectal ultrasonography of the prostate. Survival curves was calculated by Kaplan-Meier method. Differences among survival curves were analyzed using Cox-Mantel test.
  
  
  RESULTS
  tau had a close relationship to the prognosis of each case (Wilcoxon test: p < 0.05, Cox-Mantel test: p < 0.05). Gleason score had a weak relationship to prognosis (Wilcoxon test: N. S., Cox-Mantel test: p < 0.05).
  
  
  CONCLUSIONS
  tau was efficient as prognostic factor compared to Gleason score.
authors.affiliation: Department of Urology, Kyoto Prefectural University of Medicine.
authors.forename: F
authors.initials: F
authors.lastname: Hongo
authors.forename: T
authors.initials: T
authors.lastname: Nakanouchi
authors.forename: J
authors.initials: J
authors.lastname: Nakamura
authors.forename: Y
authors.initials: Y
authors.lastname: Azuma
authors.forename: A
authors.initials: A
authors.lastname: Iida
authors.forename: W
authors.initials: W
authors.lastname: Inoue
authors.forename: K
authors.initials: K
authors.lastname: Okihara
authors.forename: M
authors.initials: M
authors.lastname: Watanabe
authors.forename: M
authors.initials: M
authors.lastname: Saitoh
authors.forename: H
authors.initials: H
authors.lastname: Watanabe
authors.forename: E
authors.initials: E
authors.lastname: Konishi
authors.forename: T
authors.initials: T
authors.lastname: Ashihara
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002369:Castration; D006801:Humans; D008297:Male; D015999:Multivariate Analysis; D009929:Organ Size; D011237:Predictive Value of Tests; D011379:Prognosis; D011467:Prostate / Q000000981:diagnostic imaging / Q000473:pathology*; D011471:Prostatic Neoplasms / Q000145:classification / Q000473:pathology* / Q000601:surgery; D018709:Statistics, Nonparametric; D016019:Survival Analysis; D013997:Time Factors; D014463:Ultrasonography