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Incidental prostate cancer: is prostate-specific antigen density a valid predictor? A case-control study.

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Prostate-specific antigen density (PSAD) did not predict incidental prostate cancer (iPCa) in men with large prostates undergoing surgery for benign prostatic hyperplasia. Prior negative biopsy was a stronger predictor of iPCa.

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PSA densitybenign prostatic hyperplasiaincidental prostate cancerrobotic surgery

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Area of Science:

  • Urology
  • Oncology

Background:

  • Benign prostatic hyperplasia (BPH) is common in aging men, often requiring surgical intervention.
  • Incidental prostate cancer (iPCa) can be discovered during surgery for BPH.
  • Predictive markers for iPCa in this context are crucial for appropriate patient management.

Purpose of the Study:

  • To determine if prostate-specific antigen density (PSAD) can predict the presence of incidental prostate cancer (iPCa).
  • To evaluate PSAD's utility in patients undergoing robot-assisted simple prostatectomy (RASP) for benign prostatic hyperplasia (BPH).

Main Methods:

  • 100 patients undergoing RASP for BPH were analyzed.
  • Patients were stratified by PSAD levels (≤0.1 ng/mL/cc and >0.1 ng/mL/cc).
  • Multivariable logistic regression and univariate linear regression were used to assess PSAD's predictive value for iPCa.

Main Results:

  • Incidental prostate cancer (iPCa) was detected in 8% of cases.
  • A prior negative prostate biopsy was the strongest predictor of iPCa (OR=5.2, p=0.01).
  • PSAD, dichotomized or continuous, did not significantly predict iPCa in this cohort (p>0.05).

Conclusions:

  • PSAD is not a reliable predictor of iPCa in men with large prostates undergoing RASP for BPH.
  • Prostate MRI before surgery may improve cancer detection in select patients.
  • Further research with larger studies is needed to validate these findings.