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Related Experiment Videos

Computed tomographic appearance of sigmoid volvulus

O Catalano1

  • 1Department of Radiology, University "Federico II," Via Pansini 5, I-80131 Naples, Italy.

Abdominal Imaging
|July 1, 1996
PubMed
Summary

Computed tomography (CT) effectively identifies sigmoid colon volvulus by revealing characteristic whirl patterns and bird-beak signs. This imaging technique offers a valuable alternative to contrast enema for complex cases.

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Area of Science:

  • Radiology
  • Gastroenterology
  • Abdominal Imaging

Background:

  • Sigmoid colon volvulus is a common cause of large bowel obstruction, particularly in certain populations.
  • Diagnosis often relies on clinical presentation and conventional imaging like plain radiographs and contrast enema.

Observation:

  • This study describes the computed tomographic (CT) findings in two confirmed cases of sigmoid colon volvulus.
  • Patients underwent plain abdominal radiographs, contrast enema, and CT for diagnostic evaluation.

Findings:

  • CT demonstrated characteristic features of sigmoid volvulus, including a "whirl pattern" of the twisted sigmoid loop around the mesocolon and vessels.
  • A distinct "bird-beak" appearance was noted in the afferent and efferent segments of the bowel.

Implications:

  • CT imaging provides specific diagnostic signs for sigmoid colon volvulus.
  • Computed tomography serves as a valuable alternative to contrast enema, especially in cases with atypical clinical or plain film findings.

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