Can ultrasonography be used to assess perianal Crohn disease?

Updated: Jul 26, 2019
  • Author: Leyla J Ghazi, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Rectal endoscopic ultrasonography has been used as an alternative to MRI in the assessment of perianal disease. This technique allows differentiation of simple fistulae from complex ones, as well as assessment of fistula tracts in relation to the sphincter muscle. [68, 69, 70] Ultrasonography has been shown to improve the outcomes of fistula healing when used in conjunction with surgical seton (silk string) placement and anti-tumor necrosis factor (TNF) therapy. [80, 81, 82]

For more information, see Imaging in Crohn’s Disease.

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