Findings beyond Crohn's disease encountered on magnetic resonance enterography: a pictorial review of diseases inside and outside the bowel.

(1) The manifestations of Crohn's disease on MR enterography have been well described, but there is comparatively little in the literature about MR enterography appearances of diseases that can mimic Crohn's disease or diseases other than Crohn's disease. SECTION 1: ENTERIC DISEASES THAT MAY MIMIC CROHN'S DISEASE Superior mesenteric artery syndrome Superior mesenteric artery syndrome is a potentially lifethreatening disease characterised by compression of the third part of the duodenum between the abdominal aorta and the superior mesenteric artery (SMA) (Fig. 173 Singapore Med J 2021; 62(4): 173-181 https://doi.org/10.11622/smedj.2021038 Pictorial Essay 1 Department of Radiology, Sengkang General Hospital, Singapore, 2 Department of Radiology, Ninewells Hospital, Dundee, United Kingdom Correspondence: Dr Yeap Phey Ming, Consultant Radiologist, Department of Radiology, Sengkang General Hospital, 110 Sengkang East Way, Singapore 544886. yeap.phey.ming@singhealth.com.sg INTRODUCTION Cross-sectional imaging of the small bowel is replacing conventional barium studies in many centres, with magnetic resonance (MR) enterography becoming particularly popular for the assessment of small bowel Crohn's disease, given its superior tissue contrast with improved visualisation of the entire bowel and lack of ionising radiation. [Extracted from the article]