P-306The relationship between primary tumor regression grade and lymph nodes status in local advanced rectal cancer after neoadjuvant chemoradiation therapy

Introduction: Neoadjuvant chemoradiation therapy may affect the lymph node status in local advanced rectal cancer. In this study, we evaluate the relationship between tumor regression grade and lymph nodes status and prognosis value in local advanced rectal cancer after neoadjuvant chemoradiation therapy.