title: [Screening of prostate cancer with PSA and transperineal six sextant biopsy].
abstract: OBJECTIVE
  The objectives of this study are to examine how many cancer patients we can detect among the outpatients whose PSA values are above 4.0 ng/ml, and to compare the usefulness of transperineal six sextant biopsy (ss-biopsy) with that of transrectal one.
  
  
  METHODS
  All the male outpatients (above 50 years old) were inspected Tandem-R PSA levels and digital rectal examination (DRE). Among them, 129 patients showed more than 4.0 ng/ml of PSA values and/or positive finding of DRE, and underwent subsequent transperineal ss-biopsy.
  
  
  RESULTS
  Cancers were detected in 52 patients (40.3%) without major complications. Among 64 gray zone (PSA 4.1-10.0 ng/ml) patients, 17 (26.6%) were found to be cancer by ss-biopsy, meanwhile only 2 cancer patients (8.9%) were detected from 23 gray zone ones by traditional directed biopsy. Application of PSA density could not be found practicable to eliminate unnecessary biopsies in the gray zone group.
  
  
  CONCLUSIONS
  Prostate cancer could be found nearly a fourth in the gray zone group of the outpatients. To enhance the detection rate, obtaining at least 6 core samples are recommended from either perineal or rectal root.
authors.affiliation: Department of Urology, Tohoku Rosai Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Ishidoya
authors.forename: Y
authors.initials: Y
authors.lastname: Ogata
authors.forename: Y
authors.initials: Y
authors.lastname: Inaba
authors.forename: S
authors.initials: S
authors.lastname: Ota
authors.forename: H
authors.initials: H
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita
authors.forename: T
authors.initials: T
authors.lastname: Ohnuma
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood*; D001706:Biopsy / Q000379:methods*; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D017430:Prostate-Specific Antigen / Q000097:blood*; D011471:Prostatic Neoplasms / Q000175:diagnosis*
chemical_list: D014408:Biomarkers, Tumor; D017430:Prostate-Specific Antigen