Table 2.

Characterization of pulmonary complications

Pulmonary complications	Patients no.	%
Infectious	21	5.7
Bacterial	6	1.6
Viral	3	0.8
Aspergillus	8	2.2
No pathogen established	4	1.1
Non-infectious	40	10.8
IPS	20	5.5
BO	13	3.5
BOOP	2	0.5
DAH	3	0.8
Mixed	2	0.5

Abbreviations: BO=bronchiolitis obliterans; BOOP=bronchiolitis obliterans-organizing pneumonia; DAH=diffuse alveolar hemorrhage; IPS=idiopathic pneumonia syndrome.