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IgG4-related tubulointerstitial nephritis Naofumi Imai 1 , Shinichi Nishi 2 1Division Of Clinical Nephrology And Rheumatology Niigata University Graduate School Of Medical And Dental Sciences 2Division Of Nephrology Kobe University Graduate School Keyword: IgG4 , IgG4関連腎症 , 尿細管間質性腎炎 , 自己免疫性膵炎 pp.776-782
Published Date 2011/8/15
DOI https://doi.org/10.11477/mf.1542102698
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IgG4-related nephropathy (IgG4RN) predominantly found in middle-aged men. Urinalysis abnormalities and renal dysfunction are usually mild. Thus IgG4RN is often found in the diagnostic process regarding IgG4-related systemic diseases. The laboratory examinations reveal a frequent rate of hypocomplementemia and elevation of serum IgG, IgG4 and IgE. In imaging studies, the bilateral kidney show diffuse swelling. In CT scan low-density areas under contrast-medium enhancement are distributed patchily in the renal cortex. Renal pathology demonstrates tubulointerstitial nephritis with massive infiltration of IgG4-positive plasma cells and lymphocytes into the interstitium. The marginal lines between lesions and normal portions are clear. Characteristic severe fibrosis appears according to the progression of the disease. The lesions are rarely noted in the pericortical regions.


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電子版ISSN 1882-1367 印刷版ISSN 0485-1420 医学書院

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