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Fig. 5A 21-year-old man with proven Crohn's disease. Coronal true
fast imaging with steady-state precession (FISP) and fat saturation shows two
segments of bowel wall thickening, mucosal ulcerations (arrowhead),
and stenosis with prestenotic dilatation (thick solid arrow) of
ileum. This figure also shows fibrofatty proliferation (creeping fat,
dot), mesenteric lymph nodes (thin arrow), and increased
mesenteric vascularity (comb sign, open arrow). Distal from diseased
proximal segment is second segment of thickened ileum loop
(asterisk): skip lesion.