JUAN GAERTNER / SCIENCE PHOTO LIBRARY JUAN GAERTNER / SCIENCE PHOTO LIBRARY
Illustration of ulcerative colitis and pseudopolyps in the colon. Ulcerative colitis is a inflammatory disease of the human bowel. Repeated inflammation can cause scar tissue to form that resembles a polyp, and is known as a pseudopolyp. These lesions are not neoplasic but inflammatory tissue.
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