Abstract
Magnetic resonance enterography (MRE) has become an essential imaging modality for evaluating small bowel disorders, particularly Crohn's disease (CD), due to its superior soft-tissue contrast, multiplanar capabilities, and lack of ionizing radiation. While radiologists are generally familiar with the MRE findings of CD, several other small bowel entities can present with similar imaging features, potentially leading to diagnostic challenges. This pictorial review comprehensively illustrates the MRE findings of CD and its various mimickers, including Ulcerative colitis (UC), intestinal tuberculosis (ITB), Non-steroidal anti-inflammatory drug (NSAID) induced enteropathy, cryptogenic multifocal ulcerating and stenosing enteropathy (CMUSE), celiac disease, gastrointestinal endometriosis, intestinal lipomatosis, lymphangiectasia, eosinophilic enteritis, encapsulating peritoneal sclerosis, adhesions, radiation enteropathy, and intestinal angioedema etc. We discuss the key imaging features that can help a radiologist differentiate these conditions, highlight specific MRE sequences useful for diagnosis, and provide clinically relevant context for each entity. This review serves as a practical guide for radiologists and clinicians in recognizing and distinguishing various small bowel pathologies that may simulate CD on MRE, ultimately aiding in appropriate patient management.
Published Version
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