A rare renal disease occurring in the setting of a systemic IgG4 related disease. Renal manifestations include tubulointerstitial nephritis (TIN), membranous glomerulonephritis with or without TIN, IgA nephropathy, membranoproliferative glomerulonephritis, mesangioproliferative immune complex glomerulonephritis, sclerosing pyelitis, IgG4-related plasma cell arteritis, and hydronephrosis associated with IgG4 related retroperitoneal fibrosis or ureteral inflammatory pseudotumor. Patients present with acute or chronic renal failure and radiographic mass lesion.
