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September 14, 2017

Sjogrens

Sjögren’s syndrome is an autoimmune disease involving primarily the lacrimal and salivary glands. However, up to 27% of patients will also have renal involvement. When clinical evidence of renal involvement is present, approximately 71% show evidence of interstitial nephritis on biopsy including 46% with chronic interstitial nephritis and 25% with acute interstitial nephritis. On renal biopsy, the inflammatory infiltrates in Sjögren’s-related interstitial nephritis (as shown here) is typically mononuclear and rich in plasma cells. Unlike the interstitial nephritis was seen with IgG4-related disease or lupus, there are no tubular basement membrane deposits present by immunofluorescence.