CT and MRI of paediatric Crohn disease.

Over the past two decades there has been considerable evolution in cross-sectional imaging modalities for the evaluation of Crohn disease (CD) in children. CT and MRI have contributed to conventional techniques so that now radiology has an even greater role in the management of CD, monitoring disease progression and detecting complications. The role of CT and MRI, their limitations, and the various imaging features that the radiologist should be aware of are discussed in this review.