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Radiologic recognition of colonic diverticula simulating polyps.

C E Keller, R D Halpert, P J Feczko

    AJR. American Journal of Roentgenology
    |July 1, 1984
    PubMed
    Summary

    Diverticula in the colon can mimic polyps on barium enema X-rays, leading to misdiagnosis. Specific imaging techniques can help differentiate these conditions, avoiding unnecessary procedures.

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    Area of Science:

    • Radiology
    • Gastroenterology

    Background:

    • Double-contrast barium enema is a common diagnostic tool for colonic evaluation.
    • Accurate differentiation between colonic polyps and diverticula is crucial for appropriate patient management.

    Purpose of the Study:

    • To outline diagnostic criteria for differentiating colonic polyps from diverticula on double-contrast barium enema.
    • To address the potential for misinterpretation of diverticula as polyps and its consequences.

    Main Methods:

    • Review of current diagnostic criteria for double-contrast barium enema.
    • Analysis of imaging features that can lead to misinterpretation.
    • Identification of specific radiographic views and techniques for differentiation.

    Main Results:

    • Colonic diverticula containing impacted stool can appear as filling defects, mimicking polyps.
    • Specific imaging techniques including scout films, oblique views, compression spot images, and postevacuation films are effective in differentiation.
    • Accurate interpretation prevents unnecessary repeat barium enema or colonoscopy.

    Conclusions:

    • While generally straightforward, differentiating colonic polyps and diverticula requires careful attention to specific imaging features.
    • Impacted stool within diverticula is a common cause of pseudopolyp appearance.
    • Utilizing advanced imaging techniques ensures accurate diagnosis and avoids unnecessary patient interventions.

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