Fat ring sign (mesenteric panniculitis)

Changed by Yuranga Weerakkody, 22 Oct 2014
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The fat ring sign (also known as a  fat halo sign) describes preservation of fat around the mesenteric vessels and around soft tissue nodules on back ground of diffuse fat stranding in patients with mesenteric panniculitis or mesenteric lipomas. 

This finding may help distinguish mesenteric panniculitis (fat ring sign present) from other mesenteric processes such as lymphoma, carcinoid tumour, or carcinomatosis (fat ring sign absent).

See also

  • -<p>The <strong>fat ring sign </strong>(also known as a  <strong>fat halo sign</strong>) describes preservation of fat around the mesenteric vessels and around soft tissue nodules on back ground of diffuse fat stranding in patients with <a title="Mesenteric panniculitis" href="/articles/sclerosing-mesentritis">mesenteric panniculitis</a>. </p><p>This finding may help distinguish mesenteric panniculitis (fat ring sign present) from other mesenteric processes such as lymphoma, <a title="Carcinoid tumour" href="/articles/carcinoid-tumours-1">carcinoid tumour</a>, or <a title="Lymphangitic carcinomatosis" href="/articles/lymphangitic-carcinomatosis">carcinomatosis</a> (fat ring sign absent). </p><h4>See also</h4><ul><li><a title="Fat halo sign in inflammatory bowel disease" href="/articles/fat-halo-sign-of-inflammatory-bowel-disease">fat halo sign in inflammatory bowel disease</a></li></ul>
  • +<p>The <strong>fat ring sign </strong>(also known as a  <strong>fat halo sign</strong>) describes preservation of fat around the mesenteric vessels and around soft tissue nodules on back ground of diffuse fat stranding in patients with <a href="/articles/sclerosing-mesenteritis-1">mesenteric panniculitis</a> or <a title="mesenteric lipomas" href="/articles/mesenteric-lipomas">mesenteric lipomas</a>. </p><p>This finding may help distinguish mesenteric panniculitis (fat ring sign present) from other mesenteric processes such as lymphoma, <a href="/articles/carcinoid-tumours-1">carcinoid tumour</a>, or <a href="/articles/lymphangitic-carcinomatosis">carcinomatosis</a> (fat ring sign absent).</p><h4>See also</h4><ul><li><a href="/articles/fat-halo-sign-of-inflammatory-bowel-disease">fat halo sign in inflammatory bowel disease</a></li></ul>
Images Changes:

Image 1 Annotated image (Axial non-contrast) ( update )

Caption was changed:
Case 1 -: fat ring sign

Image 2 Annotated image (Axial non-contrast) ( update )

Caption was changed:
Case 1 -: fat ring sign (annotated)

Image 6 CT (non-contrast) ( create )

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