GI Radiology > Small Bowel > Disease Patterns > Focal

Focal Disease Patterns

Annular Lesions

Shouldered Margins

  • Primary adenocarcinoma
  • Carcinoid
  • Metastasis
  • Lymphoma
  • Crohn disease
  • Anastomotic stricture
  • NSAID enteritis


Tapered Margins

  • Crohn disease
  • Adhesion
  • Ischemic stricture (vascular, radiation, trauma)



Shouldered margins in adenocarcinoma.  Note the "apple-core" appearance of the lesion.


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Tapered luminal narrowing in Crohn disease.



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