Rectal imaging: part 2, Perianal fistula evaluation on pelvic MRI--what the radiologist needs to know

AJR Am J Roentgenol. 2012 Jul;199(1):W43-53. doi: 10.2214/AJR.11.8361.

Abstract

Objective: The purpose of this article is to provide an overview of pelvic MRI for the evaluation of perianal fistulas, with a description of the technique, illustration of relevant normal anatomy, and examples of various fistula types.

Conclusion: MRI evaluation of perianal fistulas can be challenging, and knowledge of relevant pelvic anatomy and fistula classification remains crucial in the diagnosis. MRI is highly accurate for fistula depiction and, by providing an accurate assessment of disease status and extension, can help surgical planning to minimize recurrence and detect clinically unapparent disease.

Publication types

  • Review

MeSH terms

  • Adult
  • Anal Canal / anatomy & histology
  • Anal Canal / pathology
  • Crohn Disease / complications
  • Female
  • Humans
  • Intestinal Mucosa / pathology
  • Magnetic Resonance Imaging / methods*
  • Male
  • Rectal Fistula / classification
  • Rectal Fistula / complications
  • Rectal Fistula / diagnosis*
  • Rectal Fistula / surgery