唾液腺
Salivary gland enlargement occurs in up to 30% of patients with Sjogren’s syndrome, with the parotid gland being most often enlarged, and bilateral parotid gland enlargement seen in 25–60% of patients. However, the parotid glands have a longer-lasting secretory capacity in Sjogren’s syndrome patient and therefore are the last glands to manifest hyposalivation in the disease. Histopathology shows clustering of lymphocytic infiltrates and epimyoepithelial islands.