Figure 4.
Chronic kidney lesions. (a) Interstitial fibrosis with severe arteriosclerosis (arrow). Masson Trichrome, original magnification ×5. (b) Severe multifocal arteriolar hyalinosis (arrows). Masson Trichrome, original magnification ×10. (c) Severe chronic lesions with several globally sclerotic glomeruli and a focal and segmental glomerulosclerosis (arrow). Masson Trichrome, original magnification ×5. Estimated GFR 96 ml/min per 1.73 m2, massive proteinuria 18.8 g/g. (d) Focal cortical atrophy in the subcapsular cortex containing numerous globally sclerotic glomeruli. Masson Trichrome, original magnification ×5. (e) Glomerular and vascular red Congo positive deposits in favor with the diagnosis of amyloidosis (stars). SAA protein immunohistochemistry was positive, in favor of AA amyloidosis. Congo Red staining, original magnification ×10. (f) Nodular glomerulosclerosis (star) in a diabetic nephropathy. HES, original magnification ×20.