CEACAM5 and bone metastasis: Factors related with shorter overall survival was presence of bone metastasis (P = 0.017), metastasis not confined to the lymph nodes (P = 0.002), patients with no treatment (P < 0.001), adenocarcinoma phenotype (P < 0.001), increased CA19-9 (P = 0.003), increased CEA (P = 0.047), patients belonging to poor risk group in Culine’s model (P < 0.001) and increased lactate dehydrogenase (LDH, P < 0.001).