[Mesangiocapillary glomerulonephritis, type 3].

Authors describe in 2 cases of type 3 mesangiocapillary glomerulonephritis the typical histological, pathological and clinical features of the disease. It is considered to be an ultrastructural variant of mesangiocapillary glomerulonephritis accompanied by focal subepithelial deposits reminiscent of membraneous glomerulonephritis. As the background of immune-complex deposition the increase of capillary permeability observed often in diabetes mellitus is discussed. On the basis of its more benign course this pattern is thought to be a separate subtype.