Table 3. CT texture and margin analyses of invasive mucinous adenocarcinoma and bacterial pneumonia.

	ICC (P value)	Mucinous adenocarcinoma	Bacterial pneumonia	*P value
Mean attenuation (HU)	0.96 (<0.001)	36.0 ± 38.6	43.8 ± 57.3	0.47
Skewness	0.54 (<0.001)	-0.1 ± 0.4	- 0.004 ± 0.1	0.05
Kurtosis	-0.06 (0.610)	0.4 ± 1.5	- 0.005 ± 0.1	0.07
Entropy	0.79 (<0.001)	6.9 ± 0.1	6.9 ± 0.2	0.35
5-pixel max. slope	0.85 (<0.001)	-209.7 ± 39.0	-176.6 ± 41.2	<0.001
7-pixel max. slope	0.85 (<0.001)	-156.5 ± 25.4	-133.8 ± 27.3	<0.001
9-pixel max. slope	0.85 (<0.001)	-124.4 ± 18.3	-108.7 ± 19.7	<0.001
5-pixel avg. slope	0.82 (<0.001)	-191.4 ± 42.5	-156.4 ± 44.2	<0.001
7-pixel avg. slope	0.82 (<0.001)	-148.2 ± 28.0	-124.7 ± 29.2	<0.001
9-pixel avg. slope	0.84 (<0.001)	-119.4 ± 19.7	-102.8 ± 21.1	<0.001

Note.

*The differences of CT texture and margin parameters between invasive mucinous adenocarcinoma and bacterial pneumonia were calculated using Student t-test. HU, Hounsfiled unit; ICC, intraclass correlation coefficient among regions of interest per lesion; max., maximal; avg., average.