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Examples of polypoid dysplasia from this study. A, A 44-year-old man with 2-mm polyp with low-grade dysplasia and surrounding moderately active ulcerative colitis in distal transverse colon. B, A 59-year-old woman with 1-mm polyp with low-grade dysplasia and surrounding quiescent ulcerative colitis in ascending colon. C, A 66-year-old man with 12-mm polypoid low-grade and high-grade dysplasia in ascending colon and surrounding mildly active colitis.
