Fat halo sign

Case contributed by Frank Gaillard


Long standing Crohn's disease

Patient Data

Age: Adult

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.


Note the fat halo sign seen in the loop of small bowel anteriorly in both cross-section and longitudinally, representing submucosal fat deposition due to chronic inflammation. 

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