Table 4.
Comparison of clinicoradiologic features between patients with and without a history of pneumothorax
| Characteristic | All (n = 12) | Pneumothorax |
p value | |
|---|---|---|---|---|
| Yes (n = 8) | No (n = 4) | |||
| Age | 41.3 ± 12.0 | 41.4 ± 14.1 | 41.3 ± 7.7 | 0.987 |
| Female sex | 8 (66.7) | 5 (62.5) | 3 (75) | > 0.999 |
| Ever-smoker | 7 (58.3) | 5 (62.5) | 2 (50) | > 0.999 |
| No. of pulmonary cysts | 0.547a | |||
| Less than 50 | 4 (33.3) | 2 (25) | 2 (50) | |
| 50–100 | 6 (50) | 4 (50) | 2 (50) | |
| More than 100 | 2 (16.7) | 2 (25) | 0 | |
| Size of pulmonary cysts | ||||
| Minimum, mm | 4.4 ± 1.3 | 4.3 ± 1.2 | 4.8 ± 1.7 | 0.559 |
| Maximum, mm | 35.1 ± 16.9 | 30.9 ± 13.9 | 43.5 ± 21.3 | 0.239 |
| Most predominant shape of pulmonary cysts | > 0.999b | |||
| Round | 1 (8.3) | 1 (12.5) | 0 | |
| Oval | 0 | 0 | 0 | |
| Lentiform | 1 (8.3) | 0 | 1 (25) | |
| Irregular | 10 (83.3) | 7 (87.5) | 3 (75) | |
| Distribution of pulmonary cysts (upper/lower) | > 0.999 | |||
| Upper | 0 | 0 | 0 | |
| Lower | 10 (83.3) | 7 (87.5) | 3 (75) | |
| Diffuse | 2 (16.7) | 1 (12.5) | 1 (25) | |
| Distribution of pulmonary cysts (central/peripheral) | > 0.999 | |||
| Central | 0 | 0 | 0 | |
| Peripheral | 8 (67.7) | 5 (62.5) | 3 (75) | |
| Diffuse | 4 (33.3) | 3 (37.5) | 1 (25) | |
Values are presented as mean ± SD or number (%).
a
The group of cyst number was reclassified into two groups (less than 50 or 50 or more) when compared to the presence or absence of pneumothorax due to the small number of patients.
b
The group of predominant cyst shape was reclassified into two groups (irregular or not-irregular) when compared to the presence or absence of pneumothorax due to the small number of patients.