Table 3.

CT findings in enlarged lymph nodes due to anthracosis or malignant conditions (control group)

		Anthracosis n=89	Malignant n=54	P	PPV (%)	NPV (%)
Size (mm), mean±SD	Short axis	11.1±3.98	15.3±6.43	<0.001	-	-
	Long axis	16.5±6.09	21.6±9.07	<0.001	-	-
Shape	Oval	77 (86.5)	44 (81.5)	0.438	36.4	54.5
	Round	7 (7.9)	8 (14.8)		53.3	64.1
	Polycyclic	5 (5.6)	2 (3.7)		28.6	61.8
Margin	Ill-defined	2 (2.2)	15 (27.8)	<0.001	88.2	69.0
	Confluence	25 (28.1)	23 (42.6)	0.075	47.9	67.3
Contrast enhancement		5 (5.6)	15 (27.8)	<0.001	75.0	68.3
Calcification		16 (18)	0	<0.001	0.06	57.9
Fat		2 (2.2)	0	0.527	0	61.7
Necrosis		0 (0)	19 (35.2)	<0.001	100.0	71.8

Unless otherwise noted, data are presented as n (%).

PPV, positive predictive value; NPV, negative predictive value.