Pathological findings of the sural nerve and renal biopsy specimens. A: Many macrophages and T lymphocytes were present around the blood vessels (CD3 antibody staining; × 20). This finding suggested small-vessel vasculitis.(hematoxylin-eosin staining; × 20). B: Microphotograph showed glomerulosclerosis in some areas, interstitial fibrosis, and tubular atrophy (hematoxylin-eosin staining; × 20).