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Related Experiment Videos

Screening for prostatic carcinoma with prostate specific antigen.

M K Brawer1, M P Chetner, J Beatie

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

The Journal of Urology
|March 1, 1992
PubMed
Summary
This summary is machine-generated.

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Prostate specific antigen (PSA) screening aids early prostate cancer detection. Elevated PSA levels in men over 50 identified cancers, even with normal digital exams, highlighting PSA

Area of Science:

  • Urology
  • Oncology
  • Diagnostic Medicine

Background:

  • Prostate specific antigen (PSA) is a biomarker for prostate health.
  • Elevated PSA correlates with prostate cancer, but its role in early detection needs further study.
  • Current diagnostic methods include digital rectal examination and imaging.

Purpose of the Study:

  • To evaluate the effectiveness of serum PSA levels as an initial screening tool for early prostate cancer detection in men over 50.
  • To assess the diagnostic yield of PSA screening combined with digital rectal examination and ultrasound-guided biopsy.

Main Methods:

  • Serum PSA levels were measured in 1,249 men over 50.
  • Men with PSA > 4.0 ng/mL underwent digital rectal examination and ultrasound-guided prostate biopsy.

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  • Diagnostic findings were correlated with PSA levels and digital rectal examination results.

    • Main Results:

    • 187 men (15.0%) had PSA levels > 4.0 ng/mL.
    • 32 prostate carcinomas were detected (30.5% of biopsied patients).
    • 12 cancers (37.5%) were found in men with normal or asymmetric digital rectal exams; 3 had cancer despite normal exams and ultrasound.

    Conclusions:

    • Serum PSA is a valuable adjunct to digital rectal examination for early prostate cancer detection.
    • PSA screening can identify cancers missed by digital rectal examination alone.
    • Further randomized trials are needed to confirm the impact of PSA screening on prostate cancer mortality.