Comparison of Expression of Carcinogenesis-related Molecular Markers in the Patients With Colon Cancer and Polyp

Inclusion Criteria: * Control group: subjects with no evidence of colorectal adenoma or colorectal cancer * Colorectal adenoma group: Patients with colorectal adenomas greater than or equal to 10 mm in diameter according to the endoscopic presentation as well as histological validation of colorectal adenoma. * Colorectal cancer group: Patients whose biopsy specimen is histologically confirmed as colorectal adenocarcinoma Exclusion Criteria: * Subjects age under 18 years * Previous history of colorectal neoplasms * Patients with high bleeding risk or patients who must maintain anti-coagulant or anti-platelet agents * Denial to participate in this study