There was a statistically significant difference in overall survival (OS) according to preoperative CEA concentration ≤5 ng / ml was 96, 2±6, 2 months higher than the group with CEA > 5ng / ml was 54, 6±5, 8 months, with p=0.01% and median OS after surgery with CEA ≤5 ng / ml after surgery was 85, 4±5, 6 month higher than the group with CEA > 5ng / ml was 59, 1±10, 9 months with p =0.2%.