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FSGS: The Basics

Gearoid did a nice job reviewing the recent exciting findings surrounding primary Focal Segment Glomerulosclerosis (FSGS) and I thought it would be a good opportunity to review some of the sometimes confusing terminology and clinical basics. To start,…

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A suPAR breakthrough in FSGS

As has been mentioned in previous post, the identification of the anti-PLA2R antibody has the potential to revolutionize the diagnosis of membranous GN and is already being used clinically on a small scale. It is found in 70%…

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Adult-Onset dense deposit disease

We recently saw a case of adult-onset dense deposit disease (DDD) at pathology conference. DDD is rare, affecting 1-3 per million people. For historical reasons it has been classified under the membranoproliferative subgroup of disease patterns (as type…

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INF2, actin polymerization and FSGS

Focal segmental glomerulosclerosis (FSGS) is a clinicopathologic syndrome manifesting with proteinuria, usually of nephrotic range. Early in the disease process, there is a pattern of glomerular sclerosis that is focal, involving a subset of glomeruli, and segmental, involving…

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Reticular Inclusions in HIVAN

The histology of HIVAN (HIV-Associated Nephropathy), at the light microscopy level, is indistinguishable from that of collapsing FSGS: the glomerular capillary loops are collapsed. Furthermore, both entities demonstrate foot process effacement (as in all forms of nephrotic syndrome)…

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Any nephrologist practicing in the U.S. does not need to be told that there is an increased incidence of end-stage renal disease in blacks. Furthermore, certain diseases–such as collapsing focal segmental glomerulosclerosis (FSGS), occur almost exclusively in black…

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