Surgery Without Neoadjuvant Chemoradiotherapy Compared With Neoadjuvant Chemoradiotherapy for Rectal Cancer With Negative Circumferential Resection Margin Based on MRI Assessment, a Perspective Multicenter Randomized Controlled Trial

For now, neoadjuvant chemoradiotherapy is routinely performed for T3N1-2M0 rectal cancer. However, there are lots of complications following neoadjuvant chemoradiotherapy, such as Wound-related complications, anastomotic leakage, anastomotic stenosis, sexual dysfunction, testicular or ovary failure. Patients undergoing resection for rectal cancer had low rates of local recurrence and long disease-free survival regardless of whether an APR, CAA or low AR was performed. The main purpose of preoperative radiotherapy is to lower the local recurrence. For the T3N1-2M0 rectal cancer with negative circumferential resection margin based on MRI assessment, we suppose might not necessary to receive neoadjuvant chemoradiotherapy, for operation can achieve the negative circumferential resection margin.