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Related Experiment Videos

CT evaluation of gastrointestinal tract perforation.

Kwok-Wan Yeung1, Ming-Sung Chang, Chao-Peng Hsiao

  • 1Department of Radiology, Foo-Yin University Hospital, 5, Chung San Road, Tung Kang, Ping Tung, 928 Taiwan, ROC. kwyeung@ksts.seed.net.tw

Clinical Imaging
|October 9, 2004
PubMed
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This summary is machine-generated.

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Computed tomography (CT) effectively identifies gastrointestinal tract (GI) perforations by detecting extraluminal air. Specific CT signs help differentiate proximal from distal GI perforations, improving diagnostic accuracy over plain films.

Area of Science:

  • Radiology
  • Gastroenterology
  • Medical Imaging

Background:

  • Gastrointestinal tract (GI) perforation is a critical condition requiring prompt diagnosis.
  • Distinguishing between proximal and distal GI perforations is crucial for appropriate management.
  • Computed tomography (CT) is a key imaging modality in evaluating suspected GI pathology.

Purpose of the Study:

  • To review the computed tomography (CT) appearance of gastrointestinal tract (GI) perforation.
  • To identify CT findings that differentiate proximal from distal GI perforations.
  • To compare the diagnostic efficacy of CT with upright plain films for detecting extraluminal air.

Main Methods:

  • Retrospective analysis of CT findings in 42 patients with confirmed GI perforation (10 proximal, 32 distal).

Related Experiment Videos

  • Evaluation of CT signs including extraluminal air (falciform ligament sign, scattered air), bowel wall thickening, abscess, ascites, and fat stranding.
  • Statistical comparison using Fisher's Exact Test and Z test for detection rates.

    • Main Results:

    • The CT-falciform ligament sign was more prevalent in proximal GI perforations.
    • Scattered extraluminal air, bowel wall thickening, and fat stranding were more frequent in distal GI perforations (P<.05).
    • CT detected extraluminal air in 69% of cases, significantly higher than upright plain films (19%).

    Conclusions:

    • Computed tomography (CT) is a valuable tool for diagnosing GI perforations.
    • Specific CT findings can help differentiate the location (proximal vs. distal) of GI perforations.
    • CT demonstrates superior sensitivity for detecting extraluminal air compared to conventional radiography.