FIG. 1

a: Enlarged podocytes with bubbly cytoplasm associated with involvement of few distal tubular cells (arrowheads). Masson’s trichrome, × 200. b: Massive vacuolization of podocytes without endocapillary alterations. Jones silver staining, × 400. Inset: electron microscopic. Vacuoles are empty or contain few simplified pseudo-myelin strips without zebra bodies