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What is All are true about Crohn's disease except: and explain in detail?
Inflammatory bowel Disease Crohn's disease Ulcerative colitis -Terminal ileitis -Rectum -Skip areas -Continuous -Backwash ileitis - has transmural involvement - has superficial involvement -Signs seen Target sign / halo sign Comb sign Rose thorning sign Creeping fat sign String sign of Kantor -Signs seen Loss of mucosal granularity Lead pipe appearance Collar button sign Loss of haustration -Earliest finding: Aphthous ulcer - gives cobblestone appearance in bowel Note: Cobblestone appearance in oesophagus- Candida -Earliest finding: Loss of mucosal granularity Lead pipe appearance Loss of haustration - Has Pseudo sacculation -Has rectal sparing/fibrosis/strictures/gut shoening - Has Pseudo polyps & crypt abscesses