Intestinal Behçet Disease: Evaluation With MR Enterography-A Case-Control Study

Area of Science:

• Gastroenterology
• Radiology
• Immunology

Background:

• Behçet disease and Crohn disease share overlapping gastrointestinal symptoms.
• Differentiating between these conditions is crucial for appropriate patient management.
• MR enterography (MRE) offers a non-invasive imaging modality for evaluating the small bowel.

Purpose of the Study:

• To identify imaging features distinguishing intestinal Behçet disease from small-bowel Crohn disease using MRE.
• To estimate the diagnostic performance of these MRE findings.
• To assess the overall diagnostic value of MRE in detecting intestinal Behçet disease.

Main Methods:

• Retrospective review of MRE examinations in 30 patients with intestinal Behçet disease.
• Comparison with MRE findings from 30 age- and sex-matched control subjects with small-bowel Crohn disease.
• Ileocolonoscopy and histopathology served as the reference standard for performance estimation.

Main Results:

• Polypoid pattern and homogeneous mural enhancement were significantly more frequent in Behçet disease (p < 0.003).
• Findings favoring Crohn disease included strictures, long-segment involvement, and proximal ileal disease.
• MRE demonstrated high specificity (100%) and moderate sensitivity (57.14%) for detecting intestinal Behçet disease, with ROC AUCs of 0.806 and 0.779 for key findings.

Conclusions:

• MRE can potentially differentiate intestinal Behçet disease from Crohn disease based on specific imaging patterns.
• The technique shows promise as a radiation-free tool for clarifying gastrointestinal symptoms in patients with known Behçet disease.
• Further research is necessary to validate MRE's clinical utility for diagnosing unknown intestinal Behçet disease.