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[MR Imaging of ano-perineal fistulas]

Paul Meunier1, Catherine Reenaers2, Catherine Van Kemseke2

  • 1Service de Radiodiagnostic, CHU Liège, Belgique.

Revue Medicale De Liege
|February 14, 2025
PubMed

Insights

Ano-perineal fistulas, often linked to inflammatory bowel diseases, cause significant patient discomfort. Magnetic resonance imaging (MRI) is crucial for assessing fistula extent, activity, and healing to guide treatment and prognosis.

Area of Science:

  • Gastroenterology
  • Radiology
  • Surgical Anatomy

Background:

  • Ano-perineal fistulas are a common and challenging complication, particularly in inflammatory bowel diseases.
  • These fistulas significantly impact patients' quality of life due to discomfort and medico-social factors.
  • Treatment strategies are dictated by fistula extent and potential for progression.

Purpose of the Study:

  • To review the anatomy and imaging assessment of ano-perineal fistulas.
  • To highlight the role of Magnetic Resonance Imaging (MRI) in evaluating fistulas.
  • To emphasize the importance of assessing inflammatory activity and healing for prognosis and treatment.

Main Methods:

  • Review of technical aspects of MRI for ano-perineal fistula assessment.
  • Detailed examination of anatomical structures relevant to fistulas.
  • Analysis of imaging features indicative of inflammatory activity and healing.

Main Results:

  • MRI is established as the primary imaging modality for fistula assessment and follow-up.
  • Imaging characteristics can effectively differentiate between active inflammation and healed fistula tracts.
  • Assessment of activity and healing is critical for therapeutic decision-making.

Conclusions:

  • Accurate assessment of ano-perineal fistulas using MRI is essential for effective management.
  • Understanding fistula anatomy and imaging findings aids in predicting prognosis.
  • Tailoring treatment based on MRI-evaluated inflammatory activity and healing status improves patient outcomes.
Keywords:
Ano-perineal fistulaFibrosisInflammationMRIRadiology

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