Figure 1. Changes in parotid gland swelling and histopathological findings over time.
Bilateral parotid gland swelling before glucocorticoid treatment (a). On histopathological examination of the parotid gland biopsy specimen, a lymphoplasmacytic infiltrate with fibrosis (b) and immunoglobulin G4-positive cells (c) is seen. Swelling was alleviated after 10 days of glucocorticoid administration (d).
From: Immunoglobulin G4-related Parotitis
