CT appearance of Acute Epipolic Appendagitis and its differentials
- Acute epiploic appendagitis presents as acute lower quadrant pain.
- Clinical features are similar to those of acute diverticulitis or, less commonly, acute appendicitis.
- Differentials include acute omental infarction, mesenteric panniculitis, fat-containing tumor, and primary and secondary acute inflammatory processes in the large bowel.
- CT features of acute epiploic appendagitis include:
- An oval fat attenuation lesion
- Usually, less than 3 cm in diameter with surrounding inflammatory changes, abutting the anterior sigmoid colon wall.
- Associated signs include: Hyperdense rim and central dot sign.
- Most commonly seen in the region of the sigmoid colon and ileocecal junction.
- This is a self-limiting condition.
Watch the video for the detailed case discussion and PACS based image stack.
Here is a representative CT image of acute epiploic appendagitis:
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Reference and further reading: Acute Epiploic Appendagitis and Its Mimics