In the acute phase of ulcerative colitis, which mucosal changes are commonly observed?

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Prepare for the HESI Inflammatory Bowel Disease Exam. Utilize flashcards and multiple-choice questions, each with hints and explanations. Set yourself up for success!

Multiple Choice

In the acute phase of ulcerative colitis, which mucosal changes are commonly observed?

Explanation:
In the acute phase of ulcerative colitis, the mucosa becomes swollen and inflamed, leading to edema with shallow ulcers and bleeding. The mucosa is friable, and ulcers are typically superficial but continuous from the rectum upward, reflecting inflammation limited to the mucosal and submucosal layers. This combination—edematous, eroded mucosa with hemorrhagic ulcers—is classic for the acute UC picture. By contrast, features like thickened mucosa with polyps point to later healing changes or different patterns (pseudopolyps), and transmural inflammation with fissures and fistulas are more characteristic of Crohn's disease, not the acute UC presentation.

In the acute phase of ulcerative colitis, the mucosa becomes swollen and inflamed, leading to edema with shallow ulcers and bleeding. The mucosa is friable, and ulcers are typically superficial but continuous from the rectum upward, reflecting inflammation limited to the mucosal and submucosal layers. This combination—edematous, eroded mucosa with hemorrhagic ulcers—is classic for the acute UC picture. By contrast, features like thickened mucosa with polyps point to later healing changes or different patterns (pseudopolyps), and transmural inflammation with fissures and fistulas are more characteristic of Crohn's disease, not the acute UC presentation.

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