Lymphoepithelial lesion in Sjögren's disease

Lymphoepithelial lesion in Sjögren's disease.

(Panel A) Dense periductal lymphoid infiltration is seen in this parotid gland of a patient with Sjögren's disease. The lymphoid infiltrate has a distinct structure, with a crescent-shaped follicle (arrow) and adjacent zone of dark staining small lymphocytes, extending to and surrounding the duct (box).