What is a hyperplastic colon polyp?
A hyperplastic colon polyp is the most common type of colon polyp. About 90 percent of colon polyps are hyperplastic; most of the remaining 10 percent are adenomas (adenomatous polyps). Most colon cancers arise from adenomatous polyps, not hyperplastic polyps. Serrated adenomas have characteristics of both adenomatous and hyperplastic polyps.
While hyperplastic colon polyps are benign, recent research has linked some hyperplastic colon polyps and serrated adenomas, especially large polyps found on the colon’s right side, to colon cancer. Most hyperplastic polyps are small and are found on the left side of the colon and are not associated with an increased risk of colon cancer. If a cancerous polyp is detected early, the five-year survival rate is 90 percent, according to the American Cancer Society.
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