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Related Experiment Videos

Repeat prostate needle biopsy: who needs it?

W J Ellis1, M K Brawer

  • 1Department of Urology, University of Washington, Seattle, USA.

The Journal of Urology
|May 1, 1995
PubMed
Summary
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Repeat prostate needle biopsy is crucial for detecting cancer in men with concerning initial results. High-risk indicators like atypia or high-grade prostatic intraepithelial neoplasia warrant further investigation for prostate cancer.

Area of Science:

  • Urology
  • Oncology
  • Pathology

Background:

  • Indications for repeat prostate needle biopsy after initial negative results are not well-defined.
  • Transrectal ultrasound guided sextant biopsy is a common diagnostic tool for prostate cancer.

Purpose of the Study:

  • To determine the diagnostic yield of repeat prostate needle biopsy in patients with initially negative results.
  • To identify predictors of malignancy in repeat prostate biopsies.

Main Methods:

  • A retrospective analysis of 100 patients who underwent repeat prostate needle biopsy after an initial negative sextant biopsy.
  • Stratification of results based on initial biopsy findings, including prostatic intraepithelial neoplasia (PIN) and atypia.
  • Evaluation of prostate-specific antigen (PSA) levels and PSA velocity as potential indicators.

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Main Results:

  • Carcinoma was detected in 20% of repeat biopsies.
  • High detection rates were observed in cases with atypia (29.4%) and high-grade PIN (100%).
  • PSA levels and velocity did not significantly stratify risk in this cohort.

Conclusions:

  • Patients with glandular atypia or high-grade PIN (grade II/III) on initial biopsy are at high risk for prostate cancer and should undergo repeat biopsy.
  • A rapidly rising PSA or abnormal digital rectal exam may also suggest missed malignancy.
  • Repeat biopsy is valuable in specific patient subgroups following negative initial prostate biopsies.