Fig. 2

The pathological features of OMN cases by light microscope. By comparison with the control (a), OMN case showed much more sparsely distributed and enlarged glomerulus, and more dilated proximal tubules with some irregular in contour (b). Segmental sclerosis in OMN case was present with one at the vascular pole of a hypertrophic glomerulus with diameter of 270.89 μm (c), whereas the other could not be determined for the location where sclerosis started because of its invisible vascular pole and more extensive sclerosis (d). Markedly dilated and irregular proximal tubules lined by enlarged and hyperplastic epithelial cells in OMN were observed (e). Interstitial fibrosis was mild in OMN case (f). Silver methenamine, ×100 (a and b); Periodic acid-Schiff, ×400 (c and d); Hematoxylin and eosin, ×200 (e); Masson’s trichrome, ×100 (f). Scale bar, 50 μm