Membranous Nephropathy (Membranous Glomerulonephritis) By Frank O'Brien, MD, Washington University in St Louis Reviewed / Revised Jun 2023 View Patient Education Etiology Symptoms and Signs Diagnosis Treatment Prognosis Key Points Topic Resources Electron microscopic features... Membranous Nephropathy (Dense... Membranous Nephropathy (Basement... Membranous Nephropathy (IgG.. Overview of Membranous Nephropath... Membranous nephropathy is deposition of immune complexes on the glomerular basement membrane (GBM) with GBM thickening.