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Related Experiment Videos

Urethral bulking agents: imaging review.

Mellena D Bridges1, Steven P Petrou, Deborah J Lightner

  • 1Department of Radiology, Mayo Clinic Jacksonville, 4500 San Pablo Rd., Jacksonville, FL 32224, USA. bridges.mellena@mayo.edu

AJR. American Journal of Roentgenology
|June 24, 2005
PubMed
Summary

Injectable bulking agents for urinary incontinence can appear as pathology on imaging. This review details common agents and imaging techniques to help radiologists differentiate them from true disease.

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Area of Science:

  • Radiology
  • Urology

Background:

  • Injectable bulking agents are used to treat urinary incontinence.
  • These materials can mimic urethral and periurethral pathology on medical imaging.
  • Accurate interpretation is crucial for patient management.

Purpose of the Study:

  • To describe the imaging appearance of common injectable bulking agents.
  • To guide radiologists in differentiating these agents from actual pathology.
  • To prevent diagnostic errors in patients treated for urinary incontinence.

Main Methods:

  • Review of imaging characteristics of commonly used bulking agents.
  • Discussion of appearance across multiple imaging modalities.
  • Analysis of potential diagnostic pitfalls.

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Main Results:

  • Carbon-coated microbeads (Durasphere) present a distinct imaging signature.
  • Cross-linked bovine collagen (Contigen) also has characteristic features.
  • Both agents can usually be distinguished from true pathological findings.

Conclusions:

  • Familiarity with the imaging of bulking agents aids in accurate diagnosis.
  • Durasphere and Contigen typically have recognizable appearances on imaging.
  • Radiologists can avoid misinterpreting bulking agents as pathology.