<prompt> All are true about Crohns disease except:Has transmural involvementCreeping fat sign is seenLesions are continuous and associated with backwash ileitisEarliest finding in Crohns disease is Aphthous ulcer  <response>: Inflammatory bowel Disease Crohns 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 sparingfibrosisstricturesgut shoening - Has Pseudo polyps crypt abscesses 