Table 1.

Characteristics of RA patients and corresponding lung tissue sample.

#	Sex	Age	Disease	Pathology Report
1	M	59	RA-ILD	Patchy and non-specific foci of subpleural fibrosis, chronic cellular bronchiolitis associated fibrosis and chronic interstitial pneumonitis suggestive of usual interstitial pneumonia
2	M	67	RA-ILD	Organizing diffuse alveolar damage, chronic interstitial pneumonia, and patchy foci of significant interstitial fibrosis with honeycomb change and areas of chronic pleuritis
3	F	62	RA-mild disease	Bronchial mucosa with mild chronic inflammation and eosinophils
4	F	49	RA-ILD	Patchy fibrosis with subpleural, paraseptal and peribronchiolar distribution, bronchiectasis, focal lymphoid aggregates
5	F	49	RA-ILD	Fibrovascular pleural adhesion, mild diffuse interstitial lymphoid hyperplasia, patchy non-specific chronic interstitial pneumonitis, chronic cellular bronchiolitis
6	F	60	RA-nodules	Nodules with diffuse interstitial deposition of eosinophilic extracellular materials with multinucleated giant cells on background of chronic inflammation of plasma cells and lymphocytes.
7	M	51	RA-ILD	Focal areas of pleural fibrosis with necrotizing granuloma with peripheral palisading histiocytes1
8	M	65	RA-nodules	Nodules of necrotizing granulomatous inflammation
9	F	42	RA-ILD	Mild ground-glass opacity, mild honeycombing, mild air trapping, features more consistent with usual interstitial pneumonia with fibrosis

¹Evidence of both RA and RA-nodules.