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Congo red-negative amyloidosis-like glomerulopathy: report of a case
Abstract:
An elderly patient who had nephrotic syndrome for many years was found to have mesangial expansion and thickening of the glomerular capillary basement membranes (GBMs) on light microscopy. Electron microscopy (EM) showed tubular structures measuring 24 to 27 nm in the mesangium and the subepithelial areas. Congo red staining for amyloid was negative. This case represents another instance of congo red-negative amyloidosis-like glomerulopathy.
Insights
A rare kidney disease, congo red-negative amyloidosis-like glomerulopathy, was identified in an elderly patient with long-standing nephrotic syndrome. Electron microscopy revealed unique tubular structures, distinguishing it from typical amyloidosis.
Area of Science:
- Nephrology
- Pathology
- Electron Microscopy
Background:
- Nephrotic syndrome is a complex kidney disorder characterized by heavy proteinuria, hypoalbuminemia, edema, and hyperlipidemia.
- Glomerulopathy encompasses a range of kidney diseases affecting the glomeruli, the filtering units of the kidneys.
- Amyloidosis is a condition where abnormal proteins build up in organs, potentially affecting kidney function.
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