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Fibrosis in paediatric ulcerative colitis is linked with the presence of inflammation. Involved segments showed higher degrees of fibrosis compared with non-involved segments. A and B: All slides together [n = 205]. C and D: Per patient analysis for patients in whom involved and non-involved segments were present [H&E: n = 10; MT: n = 10]; patients with the same findings are depicted together. H&E: haematoxylin and eosin; MT, Masson trichrome.
