Colonoscopy, Biomarkers, and Targeted Therapy in Colorectal Cancer.

This review highlights the most versatile diagnostic test of colonoscopy  for CRC. It remains the gold standard diagnostic tools for CRC, and to prevent CRC by screening and removing the polyp or premalignant lesions. This work also provides the most promising biomarkers, which highlights the application of the novel biomarkers in conjunction with clinical and pathologic features have allowed for more individualized approaches and targeted therapy  to patients with CRC.