Ileocecal Valve Lipoma and Lipomatous Infiltration



Ileocecal Valve Lipoma and Lipomatous Infiltration


Michael P. Federle, MD, FACR





Key Facts


Imaging



  • Lipomatous infiltration of ICV: Nonencapsulated proliferation of fat within submucosa of ICV


  • Barium enema



    • “Enlarged” ileocecal valve with smooth or lobulated surface contour


    • Stellate folds may radiate into center of “mass”


    • Oblique images: Terminal ileum entering ICV


  • CT



    • IC valve leaflets appear thickened with mixed fat/soft tissue density


  • Lipoma: Benign colonic neoplasm composed of mature fat


  • Barium enema



    • Smooth, sessile submucosal or polypoid filling defect within colon


    • Soft consistency (compressible; changes shape)


    • Intact, smooth mucosal surface


    • If adjacent to or arising from ICV → eccentric mass (not concentric, surrounding valve)


  • CT is diagnostic



    • Encapsulated, spherical mass of fat within cecum or colon, adjacent to ICV


Top Differential Diagnoses



  • Colon carcinoma



    • Must be considered in interpretation of barium enema


    • No problem in distinguishing on CT

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Jun 13, 2016 | Posted by in GASTROINTESTINAL IMAGING | Comments Off on Ileocecal Valve Lipoma and Lipomatous Infiltration

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