Figure 1.

Multiple foci of periductal and intra epithelial mononuclear cell and lymphoplasma cell infiltrate are seen forming lymphoepithelial islands (lymphoid follicle).

Figure 2.

Histological findings secondary to Sjögren’s syndrome (SS) are typically described as multifocal lymphocytic and plasma cell infiltration in the renal interstitial tissues. A: chronic tubulointerstitial nephritis nephritis (TIN) with glomerulus fibrosis and glomerular capillaries sclerotic; B: acute and chronic TIN with proteinaceous casts and atrophic tubules (magnifications ×200, hematoxylin and eosin stain).