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Assessment of the Rectum and Anus

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Rectal Inspection
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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Related Experiment Video

Updated: May 13, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
07:41

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

Published on: April 17, 2019

How I Do It: MRI Approach to Perianal Fistulas.

Jaap Stoker1,2, Steve Halligan3

  • 1Department of Radiology and Nuclear Medicine, University of Amsterdam, Amsterdam UMC, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands.

Radiology
|May 12, 2026
PubMed
Summary
This summary is machine-generated.

Pelvic MRI is crucial for diagnosing and managing perianal fistulas, offering precise classification and preoperative planning. This imaging technique aids in assessing treatment response and identifying potential complications, improving patient care.

Related Experiment Videos

Last Updated: May 13, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
07:41

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

Published on: April 17, 2019

Area of Science:

  • Radiology
  • Gastroenterology
  • Surgical Oncology

Background:

  • Perianal fistula is a common, recurrent condition often stemming from anal gland infections.
  • Accurate diagnosis and classification are vital for effective management and surgical planning.
  • Pelvic MRI has emerged as an essential tool for evaluating perianal fistulas, especially in Crohn's disease patients.

Purpose of the Study:

  • To highlight the indispensable role of pelvic MRI in the comprehensive management of perianal fistulas.
  • To outline optimal MRI techniques for fistula visualization and characterization.
  • To discuss the utility of MRI in assessing treatment response and differentiating from mimics.

Main Methods:

  • Utilizing multiplanar T2-weighted MRI sequences (with and without fat saturation) aligned with the anal canal axis.
  • Considering the use of intravenous contrast material for enhanced visualization.
  • Employing established imaging criteria for treatment response assessment.

Main Results:

  • Pelvic MRI accurately classifies fistula type and extent, facilitating tailored preoperative planning.
  • MRI is particularly valuable in complex cases, such as those associated with Crohn's disease.
  • Proposed imaging criteria aid in evaluating treatment response and healing in clinical practice.

Conclusions:

  • Pelvic MRI is essential for precise perianal fistula management, guiding surgical interventions.
  • Radiologists must be vigilant for mimics and rare malignant transformations.
  • Reporting should be clinician-focused, providing actionable insights beyond mere description.