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- Yuto Hayama, Fuminori Tomyo, Masaki Ueno, Shinichiro Asakawa, Shigeyuki Arai, Osamu Yamazaki, Yoshifuru Tamura, Makoto Mochizuki, Ryuji Ohashi, Shigeru Shibata, and Yoshihide Fujigaki.
- Department of Internal Medicine, Teikyo University School of Medicine, Japan.
- Intern. Med. 2021 Dec 1; 60 (23): 3759-3764.
AbstractA 39-year-old man presented with peripheral eosinophilia, pulmonary eosinophilic infiltrate, and renal failure due to acute tubulointerstitial nephritis (TIN). He had experienced childhood asthma and was negative for anti-neutrophil cytoplasmic antibody (ANCA). He was tentatively diagnosed with ANCA-negative eosinophilic granulomatous polyangiitis (EGPA) or idiopathic hypereosinophilic syndrome (HES). Renal involvement of isolated TIN with eosinophil infiltration is rare in EGPA and HES and does not seem to have a good prognosis in the literature. However, his condition improved well with corticosteroids and mepolizumab. The revised classification of EGPA based on the etiology should dictate the proper treatment in suspected EGPA patients with nonsystemic vasculitis.
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