Circulating Tumor DNA (ctDNA) for Minimal Residual Disease (MRD) Detection in Colorectal Cancer (CRC): Current Evidence, Clinical Applications, and Future Directions
Minimal residual disease (MRD) is a major contributor to colorectal cancer (CRC) recurrence following curative-intent treatment, yet conventional surveillance methods may fail to detect residual disease at its earliest stages. Circulating tumor DNA (ctDNA) has emerged as a minimally invasive biomarker for MRD detection...