Conditions

Rheumatoid Nephropathy Secondary amyloidosis or drug-induced damage in RA. Complement-Mediated TMA Complement dysregulation leading to thrombotic microangiopathy. Cryofibrinogenemia Nephropathy Deposition of cryofibrinogen causing renal ischemia. Mixed Connective Tissue Disease (MCTD) Autoimmune overlap syndrome with renal involvement. Castleman Disease (Renal Manifestations) Lymphoproliferative disorder sometimes causing amyloidosis. IgG4-Related Kidney Disease Lymphoplasmacytic inflammation leading to tubulointerstitial nephritis. Takayasu Arteritis Large vessel vasculitis affecting renal arteries. Polyarteritis Nodosa Medium-vessel vasculitis causing renal infarcts. Behçet’s Nephropathy Vasculitis-related renal lesions in Behçet’s disease. Sarcoidosis Nephritis Granulomatous inflammation impairing kidney function.