Table 1.

Diagnoses of the validation cohort.

N	Consensus diagnose	Accepted differential diagnosis
1	Post-primary pulmonary tuberculosis
2	Normal
3	Idiopathic pulmonary fibrosis
4	(Scleroderma-related) non-specific interstitial pneumonia
5	Lymphangioleiomyomatosis
6	Aspergilloma
7	Idiopathic pulmonary fibrosis
8	Non-specific interstitial pneumonia
9	Idiopathic pulmonary fibrosis
10	Chronic hypersensitivity pneumonitis
11	Aspergilloma
12	Respiratory bronchiolitis interstitial lung disease
13	Chronic hypersensitivity pneumonitis
14	Chronic hypersensitivity pneumonitis
15	Pulmonary alveolar proteinosis
16	Pulmonary sarcoidosis—stage II
17	Mounier-Kuhn syndrome
18	Primary ciliary dyskinesia
19	Lymphangioleiomyomatosis
20	Pulmonary Langerhans cell histiocytosis
21	Pulmonary sarcoidosis—stage II
22	Cryptogenic organizing pneumonia
23	Lymphocytic interstitial pneumonitis	Non-specific interstitial pneumonia
24	Post-primary pulmonary tuberculosis
25	Allergic bronchopulmonary aspergillosis
26	Desquamative interstitial pneumonia
27	Mounier-Kuhn syndrome
28	Desquamative interstitial pneumonia
29	Desquamative interstitial pneumonia
30	Pulmonary langerhans cell histiocytosis
31	Pulmonary granulomatosis with polyangiitis
32	Swyer-James syndrome
33	Idiopathic pulmonary fibrosis
34	Allergic bronchopulmonary aspergillosis
35	Rheumatoid pulmonary nodule
36	Rheumatoid pulmonary nodule
37	Subacute hypersensitivity pneumonitis
38	Cystic fibrosis
39	Silicosis
40	Silicosis
41	Pulmonary alveolar proteinosis
42	Pulmonary alveolar proteinosis
43	Pulmonary sarcoidosis—stage IV
44	Allergic bronchopulmonary aspergillosis
45	Cryptogenic organizing pneumonia
46	Cryptogenic organizing pneumonia
47	Acute hypersensitivity pneumonitis
48	Silicosis
49	Pulmonary alveolar microlithiasis
50	Eosinophilic granulomatosis with polyangiitis