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Related Experiment Videos

Routine bladder biopsies in men with bladder outlet obstruction?

Thomas Horn1, Barbara B M Kortmann, Nina R Holm

  • 1Department of Pathology, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark.

Urology
|March 19, 2004
PubMed
Summary

Routine bladder biopsies in men with bladder outlet obstruction show correlation with impaired bladder capacity and compliance. However, their routine evaluation is not recommended for diagnosis.

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Area of Science:

  • Urology
  • Pathology
  • Medical Diagnostics

Background:

  • Bladder outlet obstruction (BOO) presents with lower urinary tract symptoms.
  • Histopathological changes in bladder biopsies may offer insights into BOO severity.
  • Urodynamic parameters are crucial for assessing BOO and bladder function.

Purpose of the Study:

  • To determine if microscopic bladder biopsy findings correlate with urodynamic parameters in men with BOO.
  • To assess the reliability of two pathologists in interpreting bladder biopsies.
  • To evaluate the clinical utility of routine bladder biopsies in BOO evaluation.

Main Methods:

  • Sixty-three male patients with suspected BOO underwent bladder biopsies.
  • Two pathologists independently evaluated biopsies for fibrosis, elastosis, muscle degeneration, and inflammation.

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  • Histologic diagnoses were correlated with clinical and urodynamic data.

    • Main Results:

    • Abnormal bladder biopsy findings correlated with reduced bladder compliance and capacity.
    • Histologic abnormalities did not correlate with Schäfer class, urethral resistance, or prostate volume.
    • Reasonable intraobserver and interobserver reproducibility was noted (kappa 0.35 and 0.50).

    Conclusions:

    • While abnormal bladder biopsies indicate impaired bladder function, routine use is not justified in BOO evaluation.
    • The correlation is significant but not sufficient for routine diagnostic protocols.
    • Further research may explore specific histological markers for targeted BOO management.