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Leflunomide로 치료중인 류마티스 관절염 환자에서 발생한 간질성 폐렴
신아영 ( Ah Young Shin ),김승수 ( Seung Soo Kim ),김경희 ( Kyung Hee Kim ),주일남 ( Il Nam Ju ),고혁재 ( Hyeok Jae Ko ) 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.66 No.6
Leflunomide, a disease-modifying antirheumatic drug (DMARD) for the treatment of rheumatoid arthritis has been available in Korea since 2003. Leflunomide-associated interstitial pneumonitis has been appearing recently. A 25-year-old woman with a 12-month history of seronegative rheumatoid arthritis (RA) presented with acute respiratory insufficiency. She developed fever, dyspnea, and non-productive cough. Her medication history included methotrexate (15 mg/week. commencing 1 year prior) and leflunomide (20 mg/day, no loading dose, commencing 4 months prior). She was diagnosed with leflunomide-associated interstitial pneumonitis based on history, physical examination, laboratory and radiologic findings. She recovered quickly after leflunomide was withdrawn and steroids and cholestyramine were initiated quickly. We report a case of leflunomide-associated interstitial pneumonitis treated successfully with intravenous high-dose steroid and cholestyramine.