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Related Experiment Videos

Prostatic carcinoma and benign prostatic hyperplasia: MR imaging with histopathologic correlation.

T Kahn1, K Bürrig, B Schmitz-Dräger

  • 1Institute of Diagnostic Radiology, Heinrich-Heine-Universität Düsseldorf, Federal Republic of Germany.

Radiology
|December 1, 1989
PubMed
Summary

Magnetic resonance (MR) imaging identified prostate cancer in 71% of cases, though tumor volume was often underestimated. MR imaging accurately predicted extraglandular tumor spread in 82% of patients.

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Area of Science:

  • Urology
  • Radiology
  • Oncology

Background:

  • Prostate cancer diagnosis and staging are critical for treatment planning.
  • Magnetic resonance (MR) imaging offers detailed anatomical visualization of the prostate.
  • Accurate assessment of tumor extent and associated benign prostatic hyperplasia (BPH) is essential.

Purpose of the Study:

  • To evaluate the efficacy of MR imaging in detecting prostatic carcinoma.
  • To assess the accuracy of MR imaging in estimating tumor volume and predicting extraglandular spread.
  • To compare MR imaging findings with histopathological results of radical prostatectomy specimens.

Main Methods:

  • Retrospective analysis of 28 patients with prostatic carcinoma who underwent MR imaging and radical prostatectomy.

Related Experiment Videos

  • Axial sectioning of resected prostates for comparison with corresponding MR images.
  • Analysis of T2-weighted MR images for signal intensity, location, and extent of prostatic lesions.

    • Main Results:

    • Prostatic carcinoma was identified in 71% of cases (20/28), with underestimation of tumor volume in 43% (12/28).
    • Carcinomas typically appeared as low signal intensity areas within the peripheral zone on T2-weighted images (95%).
    • MR imaging demonstrated 82% accuracy in predicting extraglandular tumor spread (37.5% sensitivity, 100% specificity).
    • Benign prostatic hyperplasia (BPH) was present in 67% of patients and identified on MR imaging in 53% of cases, located in the central zone.

    Conclusions:

    • MR imaging is valuable for detecting prostatic carcinoma, particularly its location within the peripheral zone.
    • While MR imaging shows promise in assessing tumor spread, caution is needed due to potential underestimation of tumor volume.
    • Differentiating between carcinoma and benign prostatic hyperplasia on MR imaging requires consideration of their distinct locations within the prostate.