This report described the multidisciplinary team( MDT) diagnosis and treatment process for one case of rectal cancer with synchronous liver and retroperitoneal lymph node oligometastases. The patient was diagnosed as rectal cancer accompanied with synchronous liver and retroperitoneal lymph node oligometastases,and the liver metastatic site was diagnosed as potentially resectable. After active systemic therapy,the patient underwent surgery to remove the primary tumor and lymph node metastases around the ili...