Fig. 1
Allochrome: glomerulus with collapsing features; including collapse of basement membranes with segmental accentuation and overlying hyaline droplet filled epithelial cells. Active cellular crescents, however, are not seen. Mesangial matrix is mildly expanded. In addition, dilate tubules filled with hyaline and protein casts, loss of brush borders, and intraluminal cellular and granular debris are also seen