IGG4 disease and the kidneys Article 01. IgG4 renal disease. 02. A Renal involvement in IgG4 related disease - from sunlight to twilight. 03. Recent advances in IgG4 related disease. 04. IgG4 related kidney disease and retroperitoneal fibrosis. 05. Pathology outline - IgG4 related disease and kidneys.