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Transarterial prostatic embolization: initial experience in a canine model.

Fei Sun1, Francisco M Sánchez, Verónica Crisóstomo

  • 1Endoluminal Therapy and Diagnosis Department, Jesús Usón Minimally Invasive Surgery Centre, Carretera N-521, km 41.8, 10071 Cáceres, Spain.

AJR. American Journal of Roentgenology
|July 26, 2011
PubMed
Summary

Transarterial prostatic embolization is a safe procedure that induces prostatic infarction and ablation in a canine model. This technique shows potential for treating benign prostatic hyperplasia.

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Area of Science:

  • Veterinary Medicine
  • Interventional Radiology
  • Urology

Background:

  • Benign prostatic hyperplasia (BPH) is a common condition in aging men.
  • Hormonal therapy can induce canine prostatic hyperplasia for research purposes.
  • Transarterial prostatic embolization (TPE) is an emerging minimally invasive treatment option.

Purpose of the Study:

  • To prospectively evaluate the pathological responses to TPE.
  • To assess the technical safety of TPE in a canine model.
  • To explore the potential clinical applications of TPE for BPH.

Main Methods:

  • A canine model of prostatic hyperplasia was established using hormonal therapy.
  • Dogs were randomly assigned to TPE or a control group.
  • TPE involved embolization with 300-500 μm microspheres.

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  • Pathologic responses were evaluated via ultrasound, MRI, and necropsy.

    • Main Results:

    • The canine prostatic hyperplasia model was successfully created, with prostates increasing up to 572%.
    • TPE resulted in intraprostatic cavity formation in all treated dogs.
    • Four dogs showed prostate shrinkage, while three experienced increased prostate size due to large cavities.
    • No complications were observed during or after the TPE procedure.

    Conclusions:

    • TPE is a technically safe procedure in the canine model.
    • TPE effectively induces prostatic infarction and ablation.
    • The findings support the potential clinical utility of TPE for managing BPH.