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Table 1 Risk Factors, Risk Category and Screening Recommendation

From: The community uptake of an online CRC risk assessment and its utility to assess for a potential hereditary colon cancer syndrome

No personal hx of CRC or polyps & no FDR with CRC or polyps Average Risk Colonoscopy every 10 yrs beginning age 50 (or 45 if black)
1 FDR with CRC or polyps age ≥ 60 Low Risk Colonoscopy every 10 yrs beginning age 50 (or 45 if black)
Personal history of CRC or adenomatous polyps
FDR with CRC or adenomatous polyps < 60 yrs or in ≥ 2 FDR at any age
Medium Risk Colonoscopy at an interval dependant on size, number and pathology of previous polyps
Colonoscopy every 5 years beginning age 40 or 10 years before youngest age of relative affected, whichever is earlier
Combinations of 3 individuals with CRC which may include self, and ≥ 1 FDR and/or SDR (same side of family) High Risk Suspicious for hereditary CRC syndrome. Risk assessment by specialists skilled in genetic assessments. Early onset colonoscopy ± genetic testing