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Related Experiment Videos

[Prostatic weight estimation by the regression equation using transrectal ultrasonotomography]

T Mishina1

  • 1Mishina Urological Office.

Nihon Hinyokika Gakkai Zasshi. the Japanese Journal of Urology
|February 1, 1993
PubMed
Summary

Preoperative ultrasound estimation of internal prostatic gland weight (EPWi) and total prostate weight (EPWt) accurately predicts resected prostate weight (RPW) in benign prostatic hyperplasia (BPH) patients undergoing transurethral resection of the prostate (TUR-P). This aids treatment selection and operative time prediction.

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Area of Science:

  • Urology
  • Medical Imaging
  • Surgical Planning

Background:

  • Benign prostatic hyperplasia (BPH) is a common condition requiring surgical intervention.
  • Accurate preoperative assessment of prostate size is crucial for effective treatment planning.
  • Transurethral resection of the prostate (TUR-P) is a standard surgical procedure for BPH.

Purpose of the Study:

  • To evaluate the accuracy of transrectal ultrasonotomography in estimating prostatic weight before TUR-P.
  • To correlate estimated prostatic weights with actual resected specimen weights.
  • To determine the utility of preoperative weight estimation for treatment selection and operative time prediction in BPH.

Main Methods:

  • Transrectal ultrasonotomography was used to estimate total prostate weight (EPWt) and internal prostatic gland weight (EPWi) in 264 BPH patients.

Related Experiment Videos

  • Estimated weights were compared to actual resected prostate weights (RPW) in 121 patients.
  • A formula was derived and applied to a second group of 132 patients to estimate resected weight (CRPW).

    • Main Results:

    • Strong correlations were found between RPW and EPWi (r=0.851) and between RPW and EPWt (r=0.766) in the first group.
    • The derived formula showed a significant correlation between RPW and CRPW (r=0.824) in the second group.
    • Preoperative estimations demonstrated high accuracy in predicting resected prostate weight.

    Conclusions:

    • Preoperative estimation of EPWi and EPWt using transrectal ultrasonotomography is a reliable method for predicting resected prostate weight in BPH patients.
    • This technique can assist in selecting appropriate treatment modalities (e.g., TUR-P vs. open surgery).
    • Preoperative weight estimation may also help predict operative time for TUR-P, improving surgical planning and patient management.