To differentiate ulcerative colitis from Crohn disease, which finding is more typical of ulcerative colitis?

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Multiple Choice

To differentiate ulcerative colitis from Crohn disease, which finding is more typical of ulcerative colitis?

Pseudopolyps arise from mucosal healing in ulcerative colitis, which involves a continuous, superficial inflammation limited to the colon. Because the disease affects only the mucosa and submucosa, healing after ulcers can leave islands of regenerating mucosa that protrude into the lumen, appearing as pseudopolyps on endoscopy. In contrast, Crohn disease typically shows transmural inflammation, with skip lesions and complications like fistulas due to full-thickness bowel involvement. So pseudopolyps are the finding most characteristic of ulcerative colitis.

Pseudopolyps arise from mucosal healing in ulcerative colitis, which involves a continuous, superficial inflammation limited to the colon. Because the disease affects only the mucosa and submucosa, healing after ulcers can leave islands of regenerating mucosa that protrude into the lumen, appearing as pseudopolyps on endoscopy. In contrast, Crohn disease typically shows transmural inflammation, with skip lesions and complications like fistulas due to full-thickness bowel involvement. So pseudopolyps are the finding most characteristic of ulcerative colitis.

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