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A rare disease characterized by multiple and/or large serrated polyps developing in the colon, and an increased personal and familial risk of colorectal cancer. A patient is diagnosed with SSPCS if at least one of the following criteria is met: the presence of at least five sessile serrated polyps proximal to the sigmoid colon, two of which are greater than 10 mm in diameter; the presence of any number of serrated polyps occurring proximal to the sigmoid colon in an individual who has a first-degree relative with serrated polyposis; the presence of more than 20 serrated polyps of any size distributed throughout the colon. Sessile serrated polyps are also known as sessile serrated adenomas (SSA) and are estimated to be responsible for 20 to 35% of all colon cancers. Individuals with SSPCS may have a strong personal or family history of extracolonic cancers.




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