Value of glucose transport protein 1 expression in detecting lymph node metastasis in patients with colorectal cancer

Table 2 Predictive value of fluorodeoxyglucose-positron emission tomography/computed tomography based on glucose transport protein 1 expression

		Pathology	PET/CT diagnosis		Sensitivity	Specificity	PPV (%)	NPV (%)
			PET LN (+)	PET LN (-)	(%)	(%)
All patients (n = 169)		LN (+)	35	35	50	81.8	66.03	69.82
		LN (-)	18	81
Tumor center	GLUT-1 negative (n = 83)	LN (+)	12	20	37.5	88.2	66.6	69.2
		LN (-)	6	45
	GLUT-1 positive (n = 86)	LN (+)	23	15	60.5	75	65.7	70.6
		LN (-)	12	36
Tumor periphery	GLUT-1 negative (n = 78)	LN (+)	9	21	29	87.5	60	66.6
		LN (-)	6	42
	GLUT-1 positive (n = 91)	LN (+)	26	14	65	76.5	68.4	73.6
		LN (-)	12	39

GLUT-1: Glucose transport protein 1; FDG: Fluorodeoxyglucose; PET/CT: Positron emission tomography/computed tomography; LN: Lymph node; PPV: Positive predictive value; NPV: Negative predictive value