FOLFOXIRI Chemotherapy Alone as Neoadjuvant Treatment for Circumferential Radial Margin (CRM) Positive Rectal Cancer

Neoadjuvant 5-Fu based chemoradiation followed by surgery is a standard treatment for locally advanced rectal cancer. However, radiation-related side effects could not be neglected. But this multimodality strategy failed to improve survival. Neoadjuvant chemotherapy alone may be an alternative strategy to minimize treatment-related toxicities without compromising the oncology outcome. Thus, patients with MRI-defined CRM-positive rectal cancer will receive 6 cycles of neoadjuvant treatment with FOLFOXIRI followed by surgery. The purpose of the study is to evaluate the efficacy of FOLFOXIRI alone as neoadjuvant treatment in treating patients with locally advanced rectal cancer.