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December 7, 2021

Diagnose This (December 6, 2021)

Diabetes Mellitus

Which underlying systemic disease does this patient most likely have?

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The biopsy shows mesangial matrix expansion and a capillary microaneurysms. These findings are typically seen in the setting of diabetes, in which mesangial matrix expansion and mesangiolysis lead to loss of capillary wall attachments and microaneurysmal dilatation. In this case, there is lipid within the microaneurysm, likely within an endothelial “foam” cell in an area of early segmental sclerosis. The differential diagnosis includes idiopathic nodular glomerulosclerosis, which may be seen in association with hypertension and/or smoking.

 

Diabetes Mellitus