CEACAM5 and neoplasm: Pearson's correlation coefficient showed that PIV was positively correlated with tumor size (r = 0.300, p < 0.05), CEA (r = 0.214, p < 0.05), and CA-125 (r = 0.249, p < 0.05), but negatively correlated with Alb (r = −0.242, p < 0.05).