Prognosis in patients with synchronous colorectal cancer metastases after complete resection of the primary tumor and the metastases.

Background: Synchronous metastases are considered a negative prognostic factor in patients with metastatic colorectal cancer (CRC). We investigated the outcomes of stage IV CRC patients undergoing complete gross resection (R0/1) of both the primary tumor and the metastases under the guidance of a multidisciplinary team (MDT).

Methods: All CRC patients with synchronous metastases were retrieved from a prospective database.