Serrated Polyposis Syndrome: A Review and Consensus Statement by the US Multi-Society Task Force on Colorectal Cancer.

Serrated polyposis syndrome (SPS) is the most common polyposis syndrome, yet SPS often goes unrecognized. SPS diagnosis is based on clinical criteria established by the World Health Organization and includes the size, cumulative lifetime number, and location of serrated polyps throughout the colon. Individuals with SPS have an increased risk of prevalent and incident colorectal cancer (CRC). Meticulous inspection, clearing of the colon and frequent surveillance colonoscopy is recommended to decrease incident CRC. Colorectal surgery is indicated for individuals diagnosed with cancer or whose polyp burden cannot be managed endoscopically by expert endoscopists. There is no common germline pathogenic variant associated with SPS. Germline genetic testing is indicated only in individuals who meet criteria for a known hereditary syndrome in the appropriate clinical setting. First-degree relatives of patients with SPS are at heightened risk of CRC and should undergo colonoscopic screening.