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Related Experiment Videos

[Systematic morphometry of radical prostatectomy samples. A guideline for general practice].

H P Schmid1, J E McNeal, E A Redwine

  • 1Department of Urology, Stanford University Medical Center.

Helvetica Chirurgica Acta
|October 1, 1992
PubMed
Summary

Simplified protocols for prostate cancer tumor volume estimation offer accurate results. These methods reduce time and expense in routine pathology, aiding patient prognosis.

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Area of Science:

  • Uropathology
  • Surgical Pathology
  • Oncology

Context:

  • Quantified tumor volume in radical prostatectomy specimens is a key prognostic factor for prostate cancer.
  • The original Stanford technique, while accurate, is time-consuming and expensive due to extensive tissue sectioning and computer planimetry.

Purpose:

  • To develop and validate simplified protocols for estimating prostate cancer tumor volume in radical prostatectomy specimens.
  • To reduce the time and cost associated with accurate tumor volume determination for routine diagnostic pathology.

Summary:

  • Two simplified protocols, "bilateral" and "parasagittal," were developed using a reduced number of histologic slides (average 11.7 and 8.8, respectively) compared to the original Stanford technique (average 26.2).
  • Tumor volume was estimated manually by comparing cancer areas to a millimeter grid.

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  • Volume estimates using the simplified protocols were within +/- 20% of computer-determined volumes in 96% (bilateral) and 89% (parasagittal) of cases.

    • Impact:

    • These simplified methods provide accurate cancer volume determinations in radical prostatectomy specimens.
    • The protocols are suitable for routine diagnostic pathology, offering a more practical approach to prognostic assessment.
    • Reduced time and expense enhance the clinical utility of tumor volume quantification for prostate cancer prognosis.