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Updated: Jan 26, 2026

Enucleation of the Prostate for the Treatment of Benign Prostatic Hyperplasia Using a 980 nm Diode Laser
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Voiding urethrocystoscopy: A new concept for benign prostatic obstruction characterization.

B Lukacs1, S Doizi1, J-N Cornu2

  • 1Department of urology, Tenon university hospital, Assistance publique-Hopitaux de Paris, 4, rue de la Chine, 75020 Paris, France.

Progres En Urologie : Journal De L'Association Francaise D'Urologie Et De La Societe Francaise D'Urologie
|April 10, 2019
PubMed
Summary

Voiding urethrocystoscopy (VUC) is feasible in males, offering new insights into benign prostatic obstruction. This study characterizes dynamic prostatic lobe movements during micturition, enhancing understanding of BPO mechanics.

Keywords:
Benign prostatic hyperplasiaBladder outlet obstructionHyperplasie bénigne de la prostateMictionObstruction sous-vésicaleUrethrocystoscopyUréthrocystoscopieVoiding

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Area of Science:

  • Urology
  • Medical Imaging
  • Surgical Techniques

Background:

  • Benign prostatic obstruction (BPO) significantly impacts male lower urinary tract symptoms.
  • Understanding the dynamic mechanical behavior of prostatic lobes during voiding is crucial for effective BPO management.
  • Current diagnostic methods may not fully capture the dynamic nature of prostatic obstruction.

Purpose of the Study:

  • To evaluate the feasibility of performing voiding urethrocystoscopy (VUC) in male patients.
  • To characterize the dynamic movements of prostatic lobes during the micturition process.
  • To explore a novel approach for understanding the biomechanics of BPO.

Main Methods:

  • A prospective evaluation of patients undergoing benign prostatic obstruction relief.
  • Flexible urethrocystoscopy was performed with the bladder filled to the point of desire to void.
  • Patients were instructed to void with the endoscope in place, allowing for video-recording and categorization of prostatic lobe dynamics.

Main Results:

  • VUC was successfully performed in 161 out of 192 (84%) male patients.
  • Prostatic lobe dynamics during micturition were categorized into distinct types, including 'closed' (coalescent) and various degrees of lateral lobe opening.
  • Specific patterns observed included fixed posterior bladder necks and mobile median lobes with a 'rolling ball' effect.

Conclusions:

  • Voiding urethrocystoscopy (VUC) is a feasible diagnostic tool in males.
  • The study provides the first detailed description of prostatic lobe dynamics during micturition.
  • These findings may pave the way for a new mechanical understanding of benign prostatic obstruction.