title: The relationship between early biochemical failure and perineural invasion in pathological T2 prostate cancer.
abstract: OBJECTIVE
  To evaluate, in patients with pathologically localized prostate cancer, the relationship between early biochemical failure, i.e. an increasing prostate-specific antigen (PSA) level, and perineural invasion (PNI) on final pathology.
  
  
  METHODS
  The records were reviewed of 171 patients with prostate cancer who underwent prostatectomy at one institution between January 1992 and December 1995. Data on the histology, therapy and PSA level were collected and evaluated.
  
  
  RESULTS
  Of the 171 patients with pathologically localized (pT2) prostate cancer, 131 were evaluable; 17 (13%) had a detectable PSA level in the first 5 years after surgery and 63 had PNI in the pathological specimen. Of those with PSA recurrence, 14 had PNI, one had no PNI and in two there was no comment on PNI. In comparison, only 10 of the 17 patients with recurrence had a Gleason sum of >/= 7.
  
  
  CONCLUSIONS
  Perineural invasion seems to be an important predictor of early outcome in patients with organ-confined prostate cancer treated by prostatectomy. In this series it was the most sensitive predictor of biochemical failure. A more detailed pathological evaluation of prostate cancer may allow the clinician to provide closer surveillance and better informed clinical decision-making.
authors.affiliation: Departments of Urology, Wilford Hall Medical Center, San Antonio, Texas, USA.
authors.forename: J
authors.initials: J
authors.lastname: Endrizzi
authors.forename: T
authors.initials: T
authors.lastname: Seay
mesh_terms: D015415:Biomarkers / Q000097:blood; D006801:Humans; D008297:Male; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000097:blood / Q000473:pathology*; D011237:Predictive Value of Tests; D017430:Prostate-Specific Antigen / Q000097:blood*; D011468:Prostatectomy; D011471:Prostatic Neoplasms / Q000097:blood / Q000473:pathology* / Q000601:surgery; D012189:Retrospective Studies
chemical_list: D015415:Biomarkers; D017430:Prostate-Specific Antigen