arrow-right-realarrow-right-whitearrow-rightback-to-topdoctordownloadfacebookinstagramlogo-markerlogo-wordmarkpodcastsearchsearch_whitetwitter
Close Modal

Blog


Currently filtering by tag: Collapsing glomerulopathy

Diagnose This (August 10 ,2020)

Tags: Collapsing GN, Nephrotic syndrome, APOL1, G1/G2, transplant, COVID-19, Diagnose This
Q: What is your diagnosis?   The light microscopic image depicts a glomerulus with collapse of the capillary loops on the Jones methenamine silver stain. This lesion is identified by its prominent capillary loop collapse with overlying epithelial cell hyperplasia and hypertrophy, with associated protein resorption droplets. It is important to look at the background tubulointerstitium for findings that can be seen in association with this lesion such as increased proximal tubular resorption droplets, tubular microcystic tubular dilatation, and interstitial inflammation, as this lesion can be easily mistaken for crescent formation. Collapsing glomerulopathy can be seen as a primary (idiopathic)...

Another MYMP Sighting!

MYMP, Caza and Larsen, Covid-19 research
Another MYMP sighting! Durning our case conference today, Dr. Caza and Dr. Larsen discussed their recently published paper covering AKI and collapsing glomerulopathy associated with COVID-19 and APOL1.  Read the paper: AKI and Collapsing Glomerulopathy Associated with COVID-19 and APOL1 High-Risk Genotype Where will the MYMP land next?  

Art of Medicine: Collapsing Glomerulopathy

Collapsing Glomerulopathy
The above painting shows a glomerulus with capillary tuft collapse, visceral epithelial cell hyperplasia, and numerous protein resorption droplets within Bowman’s space; findings that can be seen in collapsing glomerulopathy.  A PAS stain from a case of collapsing glomerulopathy is also shown in the photomicrograph below.  Initially, collapsing glomerulopathy was considered a severe form of focal segmental glomerulosclerosis and placed into the Columbia classification. According to the Columbia classification, collapse of at least one capillary loop with obliteration of the lumen and proliferation and hypertrophy of overlying podocytes is sufficient for a diagnosis of the collapsing glomerulopathy.  Tubulointerstitial damage is...

Twitter Poll (April 17, 2019)

Collapsing Glomerulopathy, APOL1, arkana laboratories, kidney disease, renal pathology
ANSWER: D Collapsing glomerulopathy has been associated with certain infectious disease including HIV, Hepatitis C, HTLV-1, parvovirus B19, cytomegalovirus, tuberculosis, Campylobacter enteritis, and Loa loa filariasis. References: Cossey LN, Larsen CP, Liapis H. Collapsing glomerulopathy: a 30-year perspective and single, large center experience. Clin Kidney J 2017; 10(4):443-449 Cohen AH, Nast CC. HIV-associated nephropathy. A unique combined glomerular, tubular, and interstitial lesion. Mod Pathol 1988; 1: 87–97 D’Agati V, Suh JI, Carbone L, et al. Pathology of HIV-associated nephropathy: a detailed morphologic and comparative study. Kidney Int 1989; 35: 1358–1370 Pakasa NM, Nseka NM, Nyimi LM. Secondary collapsing glomerulopathy associated...

Diagnose This! (January 22, 2018)

What is your diagnosis?     ​   ​ ​   ​   ​ ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​ ​   ​ ​   ​ ​   ​ ​     ​   ​   ​...

Collapsing Glomerulopathy

Collapsing glomerulopathy is characterized by glomerular tuft collapse with overlying epithelial hypertrophy and hyperplasia in Bowman’s space. This pattern of glomerular injury is most commonly seen in African Americans and has been shown to be strongly associated with the presence of APOL1 risk variants in a number of associated diseases including HIV infection, lupus nephritis, interferon therapy, PLA2R-positive membranous glomerulopathy, and idiopathic cases.

Pushing Glass (May 2, 2017)

A 45 year-old African American man presented with pneumonia, colitis and acute kidney injury (serum creatinine- 6 mg/dL). What is the most likely diagnosis? A. Infection associated glomerulonephritis B. Ischemic glomerulopathy due to sepsis C. HIV-associated nephropathy D. Focal and segmental glomerulosclerosis E. Acute pyelonephritis Answer: C HIV-associated nephropathy (HIVAN) is a characteristic renal disease developing in the setting of HIV infection. It is manifested clinically by nephrotic-range proteinuria (full nephrotic syndrome is uncommon), acute renal failure and microscopic hematuria and morphologically by collapsing glomerulopathy. Some APOL1 polymorphisms, which are more prevalent in African American, predispose to HIVAN.  HIV-associated immune...