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크론병 환자에서 인플릭시맵과 메살라진 치료 후 발생한 지연발생 급성 세뇨관간질 신염 증례
유양재 ( Yang Jae Yoo ),정상윤 ( Sang Yoon Chung ),구대회 ( Dae Hoe Gu ),고강지 ( Gang Jee Ko ),표희정 ( Heui Jung Pyo ),권영주 ( Young Joo Kwon ),박영태 ( Young Tae Bak ),원남희 ( Nam Hee Won ) 대한소화기학회 2014 대한소화기학회지 Vol.63 No.5
Infliximab is a chimeric anti-tumor necrosis factor-alpha monoclonal antibody. Infusion related reactions and infection are well known side effects of infliximab; however, renal complications have not been well recognized. We report on a patient with late onset-acute tubulointerstitial nephritis (ATIN) after treatment with infliximab and mesalazine for Crohn’s disease. A 25-year-old woman was admitted with a purpuric rash on both lower extremities and arthralgia. She had been diagnosed with Crohn’s disease 5.6 years previously and had been treated with mesalazine and infliximab. Serum creatinine level, last measured one year ago, was elevated from 0.6 mg/dL to 1.9 mg/dL. Results of urinalysis, ultrasound, and serologic examinations were normal. With a tentative diagnosis of Henoch-Schonlein purpura, oral prednisolone was given, and serum creatinine decreased to 1.46 mg/dL, but was elevated to 2.6 mg/dL again at two months after discontinuation of prednisolone. Renal biopsy indicated that ATIN was probably ind ced by drug, considering significant infiltration of eosinophils. Concomitant use of infliximab with mesalazine was supposed to trigger ATIN. Oral prednisolone was administered, and serum creatinine level showed partial recovery. Thus, ATIN should be suspected as a cause of renal impairment in Crohn’s disease even after a long period of maintenance treatment with infliximab and mesalazine.