IgG4-related disease (IgG4-RD) is a rare systemic fibro-inflammatory condition characterized by widespread lesions that exhibit specific histological characteristics [1]. This disease is typically characterized by tissue swelling, notably elevated levels of IgG4 in the serum, increased infiltration of IgG4-positive plasma cells, and fibrosis in affected organs and tissues [2]. The organs commonly affected by IgG4-RD encompass the pancreas, bile ducts, retroperitoneum, salivary glands, lacrimal glands, lymph nodes, thyroid gland, pituitary gland, lung, and kidney [3].
