Table 3.

Anatomic distribution of involved segments/sub-segments and the number of segments with consolidation, cavitation, and clusters of nodules (N = 183).

Locationa	Group 1	Group 2			p-Valueb
	(n = 84)	2a (n = 40)	2b (n = 27)	2c (n = 32)
Consolidation	72 (85.7)	14 (35.0)	3 (11.1)	28 (87.5)
s1, s2, s1 + s2	69 (82.1)	10 (25.0)	3 (11.1)	6 (18.8)	<.001*
s3, s4, s5	15 (17.9)	2 (5.0)	1 (3.7)	5 (15.6)	0.047*
s6	41 (48.8)	6 (15.0)	1 (3.7)	3 (9.4)	<.001*
s7, s8, s7 + s8, s9, s10	13 (15.5)	3 (7.5)	0 (0)	28 (87.5)	0.012*
Number >2	36 (42.9)	1 (2.5)	0 (0)	17 (53.1)	<.001*
Cavitation	51 (60.7)	7 (17.5)	2 (7.4)	3 (9.4)
s1, s2, s1 + s2	51 (60.7)	5 (12.5)	1 (3.7)	1 (3.1)	<.001*
s3, s4, s5	5 (6.0)	0 (0)	0 (0)	1 (3.1)	0.095
s6	21 (25.0)	2 (5.0)	1 (3.7)	0 (0)	<.001*
s7, s8, s7 + s8, s9, s10	3 (3.6)	0 (0)	0 (0)	3 (9.4)	1.000
Number >1	32 (38.1)	0 (0)	0 (0)	2 (6.3)	<.001*
Clusters of nodules/mass	69 (82.1)	10 (25.0)	0 (0)	0 (0)
s1, s2, s1 + s2	66 (78.6)	8 (20.0)	0 (0)	0 (0)	<.001*
s3, s4, s5	8 (9.5)	2 (5.0)	0 (0)	0 (0)	0.046*
s6	37 (44.0)	3 (7.5)	0 (0)	0 (0)	<.001*
s7, s8, s7 + s8, s9, s10	11 (13.1)	3 (7.5)	0 (0)	0 (0)	0.011*
Number >3	46 (54.8)	0 (0)	0 (0)	0 (0)	<.001*

Abbreviations: s1 = apical segment; s2 = posterior segment right upper lobe; s1 + s2 = apico-posterior segment left upper lobe; s3 = anterior segment; s4 = lateral segment of right middle lobe or super segment of left lingual lobe; s5 = medial segment of right middle lobe or inferior segment of left lingual lobe; s6 = superior segment of right or left lower lobe; s7 = medical segment of right lower lobe; s8 = anterior segment of left lower lobe; s7 + s8 = medial-anterior segment of left lower lobe; s9 = lateral segment of right or left basal lower lobe; s10 = posterior segment of right or left basal lower lobe.

^aData are presented as numbers with percentage by group (%).

^bp-Value derived from the comparison between group 1 and group 2 with Pearson's chi-square test or Fisher's exact test.

^*p-Value < 0.05 statistically significant.