Kidney.
The kidneys of all patients generally had normal shape with reduced volume and size. Outer surfaces showed reddish depressions. Histological examination showed interstitial fibrosis, mainly in group 2 patients (Figure 5B1), with swollen glomerular endothelial cells. Fibrin deposits were visible underneath the Bowman capsule (Figure 5B2). Chronic tubular-interstitial inflammation (Figure 5B3) and glomerular sclerosis were observed (Figure 5B4) even in patients without a history of previous kidney disease (Table 3).