Anal fistula MRI

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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:^[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.