title: Small bowel MRI in adult patients: not just Crohn's disease-a tutorial.
abstract: OBJECTIVE
  To provide an overview of less well-known small bowel and mesenteric diseases found at small bowel magnetic resonance (MR) enterography/enteroclysis and to review the imaging findings. MR enterography and enteroclysis are important techniques for evaluation of small bowel diseases. In most centres these techniques are primarily used in Crohn's disease, and most radiologists are familiar with these MRI findings. However, the knowledge of findings in other diseases is often sparse, including diseases that may cause similar clinical symptoms to those of Crohn's disease.
  
  
  METHODS
  We present a spectrum of less common and less well-known bowel and mesenteric diseases (e.g. internal hernia, intussusception, neuroendocrine tumour) from our small bowel MR database of over 2,000 cases.
  
  
  RESULTS
  These diseases can be found in patients referred for bowel obstruction, abdominal pain or rectal blood loss. Further, in patients with (or suspected to have) Crohn's disease, some of these diseases (e.g. neuroendocrine tumour, familial Mediterranean fever) may mislead radiologists to erroneously diagnose active Crohn's disease.
  
  
  CONCLUSIONS
  Radiologists should be familiar with diseases affecting the small bowel other than Crohn's disease, including diseases that may mimic Crohn's disease.
authors.affiliation: Department of Radiology, Academic Medical Center, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands, giedre.kavaliauskiene@gmail.com.
authors.forename: Giedre
authors.initials: G
authors.lastname: Kavaliauskiene
authors.forename: Manon L W
authors.initials: ML
authors.lastname: Ziech
authors.forename: C Yung
authors.initials: CY
authors.lastname: Nio
authors.forename: Jaap
authors.initials: J
authors.lastname: Stoker