Table 1. Exposure History and Evaluation Summary for 38 Soldiers with Constrictive Bronchiolitis.

Variable	Value no. (%)
Smoking status
Current	6 (16)
Former	7 (18)
Never	25 (66)
Exposure history
Sulfur-mine fire in 2003	28 (74)
Incinerated solid waste	24 (63)
Incinerated human waste	18 (47)
Dust storms	33 (87)
Combat smoke	17 (45)
Chest radiography
Normal	37 (97)
Lingular nodule	1 (3)
Computed tomography*
Normal	25 (68)
Mild air trapping	6 (16)
Multiple nodules <1 cm	2 (5)
Solitary nodule <1 cm	1 (3)
Pleural thickening	1 (3)
Bibasilar scarring	1 (3)
Apical bullae	1 (3)
Pulmonary-function testing
Normal	13 (34)
Normal with low carbon monoxide diffusing capacity	19 (50)
Obstructive	2 (5)
Restrictive	3 (8)
Mixed obstructive and restrict ive	1 (3)

^*The results are for 37 soldiers who underwent high-resolution computed tomography.