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Currently filtering by tag: Diabetic nephropathy

Art of Medicine: Diabetic Nephropathy

The above painting shows glomeruli with nodular mesangial expansion and arterial hyalinosis, changes frequently seen in diabetic nephropathy. Diabetic nephropathy is graded by the classification system established by the Renal Pathology Society to separate lesions into varying degrees of severity. In class I diabetic glomerulopathy, there are no changes identified by light microscopy, but thickening of the glomerular basement membranes are seen on electron microscopy (see photomicrograph below). Thickened glomerular basement membranes are greater than 471 nm in women or 520 nm in men (in our lab), which represents greater than 2 standard deviations above the normal population. Glomerular basement...

One little, two little, three little findings…

This biopsy came to us for evaluation of nephrotic syndrome. The patient is a Hispanic gentleman in his late 80s, with CKD stage IV and a history of arthritis, diabetes mellitus, coronary artery disease, and hypertension.  He had 4.9 g/g of proteinuria.  He had negative ANA, hepatitis B, and C serologies. C3 and C4 were within normal limits. Clinically, the differential diagnosis included membranous glomerulopathy and FSGS. The biopsy was a very good sample, consisting of long cores of renal tissue, mostly from cortex.  More than 20 glomeruli were present.  The glomeruli had clear features of diabetic nephropathy, as expected...

Diagnose This! (March 5, 2018)

What is the most likely diagnosis? For bonus points, what is the basic differential for this morphologic finding (non-immune and immune)?     ​   ​ ​   ​   ​ ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​...