Lynch Syndrome in Colorectal Cancer Surgery

"Group 1: MMR-Proficient Group Label: MMR-Proficient~Description: Patients with normal expression of MMR proteins on IHC analysis. No indication for further genetic testing.~Type: Observational Group~Group 2: dMMR Group Label: dMMR~Description: Patients with loss of MMR protein expression (MLH1, PMS2, MSH2, or MSH6) on IHC. These patients will undergo further molecular or genetic analysis to evaluate for Lynch syndrome.~Type: Observational Group"