IgG4-related kidney disease mimicking renal cell carcinoma: a case report and literature review
IgG4-related kidney disease (IgG4-RKD) presenting as renal masses is a very rare clinical entity. IgG4-RKD represents the renal manifestation of IgG4–related disease (IgG4-RD) and is characterized primarily by tubulointerstitial nephritis (TIN) caused by infiltration of IgG4-positive plasma cells in the renal interstit...