Table 4. Correlation between staining intensity of glucose metabolism-related genes and microscopic malignant features of SPNs.

		Microscopic malignant features		P-value
		Absent (N = 29)	Present (N = 7)
GLUT1	-	4	1	1.000
	+	25	6
HK1*	+	3	1	1.000
	++	17	5
PKM2*	+/-	6	0	0.280
	+	14	6
Necrosis	-	20	6	0.645
	+	9	1
Ki-67	0	2	0	0.781
	< 1	15	6
	1–2	10	-
	3 ≤	2	1
Clinical pattern 18FDG-uptake Defective	Hot+Mixed	17	7	0.070
	12	0

^* 10 cases were not included due to poor staining.