Imaging of the small bowel: Crohn’s disease in paediatric patients

Figure 13 Thirteen years old female with active Crohn’s disease. Coronal (A), transverse (B) T2-weighted images show thickened, inflamed segments of ileum and fat proliferating in the mesentery. The thin layer of high signal on T2 in b represents edema. The mass of the fat will displace adjacent small bowel. Coronal post-contrast T1-weighted fat-suppressed image (C) shows increased vascularity (asterisks), named “comb sign”, adjacent to a hyper-enhancing thickened segment of ileum.