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Related Experiment Videos

The urinal artifact.

A J Ramos, F B Watts, J W Timmons

    Radiology
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Extrinsic pressure from a urinal can cause temporary narrowing of the male anterior urethra during voiding cystourethrography. Recognizing this finding is crucial to prevent misdiagnosis of true urethral strictures.

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    Area of Science:

    • Urology
    • Radiology
    • Medical Imaging

    Background:

    • Voiding cystourethrography (VCUG) is a common diagnostic tool for evaluating the male urethra.
    • Extrinsic compression of the urethra during VCUG can lead to artifactual narrowing.
    • Urinal use during VCUG is a potential source of extrinsic pressure.

    Purpose of the Study:

    • To highlight the phenomenon of extrinsic urethral narrowing caused by urinals during VCUG.
    • To emphasize the importance of differentiating this artifact from true urethral strictures.

    Main Methods:

    • Review of VCUG cases demonstrating urethral narrowing.
    • Correlation of imaging findings with patient positioning and urinal use.
    • Analysis of potential causes for extrinsic urethral compression.

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    Main Results:

    • Abrupt narrowing of the anterior male urethra was observed in several VCUG examinations.
    • This narrowing was consistently associated with the presence and manipulation of a urinal.
    • The narrowing resolved upon removal or repositioning of the urinal.

    Conclusions:

    • Temporary urethral narrowing during VCUG can be an artifact of extrinsic pressure from a urinal.
    • Radiologists and urologists must be aware of this potential misinterpretation.
    • Proper technique during VCUG can minimize the risk of artifactual urethral narrowing.