Case List History Objectives Radiology Images Questions COLORECTAL DISEASE Case #2 - A 32 year old with bloody diarrhea DISCUSSION QUESTIONS: 11.) What are the differences between Crohn's disease and ulcerative colitis? There are differences between Crohn's disease and ulcerative in the history as well as pathology and imaging findings. These differences are summarized as follows: Feature Crohn's Disease Ulcerative Colitis Bleeding Rare More Common Pain Moderate to severe Mild to moderate Anal lesions Common (>50%) Infrequent (<20%) Ileal involvement Common Rare(backwash ileitis) Distribution Skip areas Continuous from rectum upwards Granulomas Present Absent Ulcers Linear, deep, scattered Superficial, universal Mucosal appearance Cobblestoning Pseudopolyps Toxic megacolon Rare More common Internal fistulas Yes No Fibrosis Present Absent or minimal Risk of carcinoma Uncommon Common
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