RT Journal Article SR Electronic T1 Interstitial pneumonitis associated with infliximab therapy. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1189 OP 1193 VO 33 IS 6 A1 Edith Villeneuve A1 Anne St-Pierre A1 Boulos Haraoui YR 2006 UL http://www.jrheum.org/content/33/6/1189.abstract AB Interstitial pneumonitis is a well documented, rare complication of methotrexate (MTX). We describe a patient with rheumatoid arthritis (RA) taking MTX for more than 3 years who then developed severe interstitial pneumonitis after a third infliximab infusion. Other similar cases are reviewed. Infliximab may potentiate pulmonary toxicity of MTX.