Figure 3: Pathological findings of a renal biopsy: a. Fifteen out of 30 glomeruli were collapsed and indurated (PAM × 40). b. There was no evidence of glomerulonephritis such as endocapillary proliferation, mesangial cell proliferation, crescent formation, or thickening of the basement membrane. Proliferation of mesangial matrix was only partially detected (PAS × 200). c. Arteriole was hyalinized (Elastica van Gieson × 200).