膜性肾病(MN)是一病理学诊断名称,组织学特征是肾小球毛纲血管壁弥漫性增厚,但无系膜、内皮或上皮细胞增殖,银染色可见肾小球基底膜(GBM)上有钉突存在,免疫荧光检查可见毛细血管袢有IgG及C_3呈颗粒状沉积,常呈团状或块状分布,在系膜区也可散见。电镜下可见GBM增厚及有不连续的电子致密物。在PASM-Masson染色下可按病变发展过程分为四期。I期,基膜下有散在的红色沉积物(沉积于 Membranous nephropathy (MN) is the name of a pathological diagnosis histologically characterized by diffuse thickening of the vessel wall of the glomeruli, but no proliferation of mesangial, endothelial or epithelial cells. Glomerular basement membrane (GBM) ) There is a nail on the existence of immunofluorescence shows capillary capillaries with IgG and C_3 were granular deposition, often cluster or block distribution, mesangial area can be scattered. Electron microscope shows GBM thickening and discontinuous electronic dense material. Under the PASM-Masson staining lesions can be divided into four stages. Stage I, with scattered red deposits beneath the basement membrane (deposited on