1. Department of Medical Oncology, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou China
2. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases Guangzhou China
3. Department of Colorectal Surgery, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou China
4. Department of Pathology, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou China
5. Center for Clinical Research, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou China
6. Department of Radiology, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou China