Crohn’s disease is an inflammatory bowel disease that can affect any segment of the
gastrointestinal tract. It has a variable clinical course, with alternating periods of
disease activity and remission. Because the incidence and prevalence of Crohn’s disease
have been increasing, evaluation by imaging methods has become more important. The most
widely used methods are computed tomography enterography, magnetic resonance enterography
(as an elective examination), and contrast-enhanced computed tomography (in the context of
emergency). Computed tomography enterography and magnetic resonance enterography are
useful for diagnosis, follow-up, evaluation of complications, and prognosis. Both can be
used in order to evaluate the small bowel loops and the associated mesenteric findings, as
well as to evaluate other abdominal organs. They both also can detect signs of disease
activity, fibrosis, penetrating disease, and complications. The interpretation of such
changes is essential to the multidisciplinary approach, as is the standardization of the
nomenclature employed in the reports. In this paper, we review and illustrate the imaging
findings of Crohn’s disease, using the standardized nomenclature proposed in the
multidisciplinary consensus statement issued by the Society of Abdominal Radiology, the
Society of Pediatric Radiology, and the American Gastroenterology Association, with
recommendations for descriptions, interpretations, and impressions related to those
findings.