Table 1  Demographic and clinical characteristics of ILD patients

Number of patients

7

16

13

Predominant HRCT pattern (n, %)

 Nodules or micronodules

3 (42.8%)

–

–

 Nodules and cysts

2 (28.6%)

–

–

 Cysts

2 (28.6%)

–

–

Gender

 Male/female (n, %)

2/5 (29–71%)

12/4 (75–25%)

12/1 (92–8%)^a

Age (yr)

46 (42–48)

66 (52–72)^a

72 (67–77)^a

Smoking status (n, %)

 Non-smokers

0 (0%)

0 (0%)

2 (15%)

 Former smokers

1 (14%)

6 (40%)

2 (15%)

 Current smokers

6 (86%)

10 (60%)

9 (69%)

Cigarettes (pack/yr)

25 (14–40)

47 (28–78)

35 (30–44)

Pulmonary function test

 FVC % predicted

89.71 (14.77)

93.81 (15.73)

80.00 (9.6)^b

 FEV1% predicted

71.71 (19.11)

82.56 (18.71)

82.85 (11.64)

 FEV1/FVC, %

63.14 (12.23)

66.80 (11.28)

75.86 (8.67)^b

 DLCO, %

64.14 (15.32)

67.07 (19.21)

51.23 (18.42)^b

BAL cell counts (%)

 Macrophages

70 (21.6)

71 (17.4)

59.75 (20.66)

 PML

14.5 (12.67)

15.18 (10.09)

19.75 (18.86)

 Lymphocytes

13 (9.84)

9.56 (7.49)

10.91 (5.4)