title: [Systematic prostate biopsy before transurethral resection of the prostate].
abstract: OBJECTIVE
  With the aim of evaluating the clinical significance of systematic prostate biopsy before transurethral resection of the prostate (TUR-P), clinical data were reviewed retrospectively in patients who had underwent prostate biopsy prior to scheduled TUR-P.
  
  
  METHODS
  Between July, 1994 and June, 2000, TUR-P was scheduled in a total number of 456 patients with clinically diagnosed benign prostatic hyperplasia (BPH).
  
  
  RESULTS
  In 218 (47.8%) out of 456 cases, prostatic biopsy was conducted prior to TUR-P due to abnormally elevated serum prostate specific antigen (PSA) levels of 4.0 ng/ml or more, revealing only 22 (10.1%) cases of prostatic cancer. Between these 22 cases with biopsy proven prostatic cancer and 189 cases with BPH confirmed both by biopsy and following TUR-P, statistically significant differences were noted in age (p < 0.05), prostate volume (p < 0.0001) and PSA density (p < 0.01).
  
  
  CONCLUSIONS
  Considering the low positive rate of preoperative prostatic biopsy, it might be suggested that a considerable number of biopsy could be avoided in patients with clinically diagnosed BPH. Based on the results obtained from this study, prostatic biopsy might be unnecessary before TUR-P for those with prostate volume greater than 60 ml or PSA density less than 0.15.
authors.affiliation: Nagoya Urology Hospital.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Hayakawa
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Kanemitsu
authors.forename: Hideo
authors.initials: H
authors.lastname: Mitsuya
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Hayase
authors.forename: Munekado
authors.initials: M
authors.lastname: Kojima
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000097:blood; D001706:Biopsy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011467:Prostate / Q000473:pathology*; D017430:Prostate-Specific Antigen / Q000097:blood; D011470:Prostatic Hyperplasia / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D011471:Prostatic Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology; D012189:Retrospective Studies; D020728:Transurethral Resection of Prostate
chemical_list: D015415:Biomarkers; D017430:Prostate-Specific Antigen