Anal fistula Diagnostic study of choice

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Manpreet Kaur, MD [2]

Overview

MRI is the gold standard imaging study to know about fistula anatomy. Indications are recurrent fistulas and complex fistulas.

MRI is the gold standard imaging study to know about fistula anatomy.

Indications:^[1]^[2]^[3]

Recurrent fistulas
Primary fistulas that appear to be complex after examination under anesthesia or endoanal ultrasound.

↑ "Management of anal fistula | The BMJ".
↑ Halligan S, Stoker J (2006). "Imaging of fistula in ano". Radiology. 239 (1): 18–33. doi:10.1148/radiol.2391041043. PMID 16567481.
↑ Siddiqui MR, Ashrafian H, Tozer P, Daulatzai N, Burling D, Hart A, Athanasiou T, Phillips RK (2012). "A diagnostic accuracy meta-analysis of endoanal ultrasound and MRI for perianal fistula assessment". Dis. Colon Rectum. 55 (5): 576–85. doi:10.1097/DCR.0b013e318249d26c. PMID 22513437.