Clinical significance of CA19-9 in diagnosis of digestive tract tumors

Table 2 Evaluational indexes for CA19-9-based diagnosis of gastrointestinal benign and malignant diseases

Disease	n	Positive	Se, %	Sp, %	Ac, %	+PV, %	-PV, %
Gastric cancer
Preoperation and recurrence	55	26	47.3	100.0	65.9	100.0	50.8
Colorectal cancer
Preoperation and recurrence	66	33	50.0	100.0	65.6	100.0	47.6
Esophageal cancer	10	2	20.0	100.0	80.0	100.0	78.9
Pancreatic cancer	7	6	83.3	100.0	97.3	100.0	96.8
GI benign disorders	30	0	0.0	100.0	78.7		787

Se, Sensitivity; Sp, Specificity; Ac, Accuracy; +PV, Positive predictive value; -PV, Negative predictive value.