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AJR 2005; 185:257-264
© American Roentgen Ray Society

Pictorial Essay

Urethral Bulking Agents: Imaging Review

Mellena D. Bridges1, Steven P. Petrou2 and Deborah J. Lightner3

1 Department of Radiology, Mayo Clinic Jacksonville, 4500 San Pablo Rd., Jacksonville, FL 32224.
2 Department of Urology, Mayo Clinic Jacksonville, Jacksonville, FL.
3 Department of Urology, Mayo Clinic, Rochester, MN.

OBJECTIVE. At imaging, injectable bulking materials used for urinary incontinence have the potential to mimic urethral and periurethral pathology. This article elucidates the appearance of the most commonly used agents in multiple techniques and helps the practicing radiologist avoid potential diagnostic pitfalls.

CONCLUSION. Carbon-coated microbeads (Durasphere) and cross-linked bovine collagen (Contigen) have fairly characteristic imaging appearances and can in most cases be differentiated from true pathology.


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