Related Experiment Video

Updated: Apr 1, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
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Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse

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MRI of perianal fistulae: a pictorial kaleidoscope

N Kumar1, Y Agarwal1, A Singh Chawla2

  • 1Department of Radiodiagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi 110029, India.

Clinical Radiology
|October 13, 2015
PubMed

Insights

Magnetic resonance imaging (MRI) accurately maps perianal fistulae, guiding surgeons to optimize treatment and reduce risks like anal incontinence. This imaging is crucial for effective surgical planning of complex anal fistula cases.

Area of Science:

  • Gastroenterology
  • Radiology
  • Surgical Anatomy

Background:

  • Perianal fistulae are abnormal anorectal-to-skin connections causing patient distress.
  • Inadequate pre-surgical mapping risks residual disease, complicating treatment and increasing incontinence risk.
  • Damage to the anal sphincter complex during surgery can lead to incontinence.

Purpose of the Study:

  • To review the critical role of Magnetic Resonance Imaging (MRI) in evaluating perianal fistulae.
  • To highlight MRI's utility in mapping fistula tracts relative to the anal sphincter complex.
  • To demonstrate how MRI facilitates optimized surgical planning for perianal fistulae.

Main Methods:

  • Literature review focusing on MRI techniques for perianal fistula assessment.
  • Analysis of studies demonstrating MRI's accuracy in delineating fistula anatomy.
  • Synthesis of evidence supporting MRI as a pre-operative planning tool.

Main Results:

  • MRI provides detailed anatomical information of perianal fistulae.
  • Accurate mapping by MRI helps surgeons identify the fistula tract's relationship to the anal sphincter complex.
  • This precise imaging aids in surgical decision-making and risk mitigation.

Conclusions:

  • MRI is an indispensable tool for the pre-operative evaluation of perianal fistulae.
  • Utilizing MRI leads to more informed surgical strategies, improving outcomes.
  • Effective MRI assessment minimizes the risk of damaging the anal sphincter complex and subsequent incontinence.

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