Characteristic chest CT findings for progressive cavities in Mycobacterium avium complex pulmonary disease: a retrospective cohort study

Table 2 Initial chest computed tomography findings in the cavities of 97 patients

	Progressive cavity Group (n = 52)	Non-progressive cavity Group (n = 45)	P value
Location of the cavity			0.024
Upper lobe	30 (57.7)	20 (44.4)
Middle lobe or lingula	2 (3.8)	10 (22.2)
Lower lobe	20 (38.5)	15 (33.3)
Maximum inner diameter (mm)	14.6 (4.4–55.1)	8.7 (2.6–40.4)	< 0.001
The shortest distance (mm)^a	0.0 (0.0–24.1)	3.2 (0.0–20.9)	< 0.001
Multiple cavities	36 (69.2)	20 (44.4)	0.023

Data are presented as median (range) or no. (%) of patients. ^a: The shortest distance is from the pleura to the outer wall of the cavity. p < 0.05 was considered significant

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