Fig. 2From: Palliative primary tumor resection provides survival benefits for the patients with metastatic colorectal cancer and low circulating levels of dehydrogenase and carcinoembryonic antigenOverall survival of 387 patients with metastatic colorectal cancer grouped by lactate dehydrogenase (LDH) and carcinoembryonic antigen (CEA) levels. Group 1 patients who had normal LDH levels and CEA levels ≤70 ng/mL; group 2 patients with increased LDH levels and CEA levels ≤70 ng/mL, or patients with normal LDH levels and CEA levels >70 ng/mL; group 3 patients who had increased LDH levels and CEA levels >70 ng/mLBack to article page