Interstitial Lung Disease in Rheumatoid Arthritis in the Era of Biologics

Table 1

Histopathological patterns of RA-associated ILD.

References	No. of patients	Percentage of different histopathological patterns
Lee et al., 2005 [14]	18	UIP 10 (56%); NSIP 6 (33%); OP (11%); FB 1 (6%); Other 1 (6%)
Tansey et al., 2004 [15]	17	NSIP 8 (47%); FB 6 (35%); UIP 2 (12%); Other 1 (6%)
Bongartz et al., 2010 [16]	46 (14 of whom based on biopsy and/or CT)	UIP 9 (20%); NSIP 1 (2%); OP 3 (6,5%); Other 15 (32.6%)
Tanaka et al., 2004 [17]	63 (17 of whom based on biopsy)	NSIP 10 (59%); UIP 2 (12%); DIP 1 (6%); Other 3 (18%)
Akira et al., 1999 [18]	29 (19 of whom based on biopsy)	UIP 14 (74%); OP 3 (16%); NSIP 1 (5%); Other 1 (5%)

UIP: usual interstitial pneumonia; NSIP: nonspecific interstitial pneumonia; OP: organizing pneumonia; FB: follicular bronchiolitis; DIP: desquamative interstitial pneumonia.