Features of a long segment of colitis involving most of the transverse and descending colons characterised by wall thickening in up to 7 mm and a stricture point just after the hepatic flexure of the colon with mild upstream distention of the descending colon. The distal ileum shows an 8cm segment of mild wall thickening (3.5 mm) with no upstream bowel distension (2.8 cm). Another segment of mural thickening (4.0mm) is identified in the proximal ileum, measuring about 4 cm in extension, and associated with upstream distension (3.5 cm). All those segments show associated prominent vasa recta. No signs of fistulas or abscess. Small mesenteric lymph nodes are reactive by size criteria. No free fluid in the peritoneal cavity. Signs of liver steatosis, solid viscera otherwise unremarkable.