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Nephrotic Syndrome, Arkana Laboratories, renal pathology, kidney injury
By L. Nich Cossey, MD
kappa light chain, diagnose this, arkana laboratories, renal pathology
By L. Nich Cossey, MD
GBM, glomerular basement membranes, diagnose this, arkana laboratories
Diagnose This!

Diagnose This (January 28, 2019)

What is your diagnosis?     …

By L. Nich Cossey, MD

Anti-GBM, renal pathology , diagnose this!, arkana laboratories
Diagnose This!

Diagnose This (January 21, 2019)

A limited sample showed this lesion and negative staining on paraffin-retrieved IF tissue. What is your diagnosis? …

By L. Nich Cossey, MD
IgA, IgA Dominant Infection-Associated Glomerulonephritis, renal pathology, arkana laboratories, pathology of the kidney
Diagnose This!

Diagnose This (December 10, 2018)

What is your diagnosis?       The images show a necrotizing, crescentic, and endocapillary proliferative glomerulonephritis with IgA deposition…

By L. Nich Cossey, MD
endocarditis-associated glomerulonephritis in renal biopsy at Arkana Laboratories
Diagnose This!

Diagnose This (December 3, 2018)

What is your diagnosis? What would you want to confirm your diagnosis?       …

By L. Nich Cossey, MD

Rhabdomyolysis in kidney biopsy at Arkana Laboratories
Diagnose This!

Diagnose This (November 19, 2018)

What is your diagnosis? What additional stains would you like to confirm your diagnosis? …

By L. Nich Cossey, MD
PAS negative intratubular casts in renal biopsy at Arkana Laboratories
Diagnose This!

Diagnose This (November 12, 2018)

What is your diagnosis and what do you need to prove it?       …

By L. Nich Cossey, MD
kidney ischemia in renal biopsy at Arkana Laboratories
Diagnose This!

Diagnose This (November 5, 2018)

What renal state do these glomerular changes represent? …

By L. Nich Cossey, MD

Minimal Change Disease
Diagnose This!

Diagnose This (October 29, 2018)

What class of disease does this patient have and how did they present clinically?         …

By L. Nich Cossey, MD
IgG4-related disease
Diagnose This!

Diagnose This (September 10, 2018)

What is your diagnosis? This biopsy shows a chronic, active tubulointerstitial nephritis with sharp demarcation between affected and non-affected tissue…

By L. Nich Cossey, MD
Scleroderma in a renal biopsy at Arkana Laboratories
Diagnose This!

Diagnose This (August 27, 2018)

What is this finding and what is the likely etiology? …

By L. Nich Cossey, MD

ANCA-Mediated Vasculitis
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Diagnose This (August 20, 2018)

What is your presumed diagnosis in the absence of immunofluorescence and electron microscopy? …

By L. Nich Cossey, MD
Monoclonal Gammopathy of Renal Significance
Diagnose This!

Diagnose This! (August 6, 2018)

What is your diagnosis? This is a complicated case. The photomicrographs show a membranoproliferative pattern glomerulonephritis (MPGN) with IgG Lambda…

By L. Nich Cossey, MD
Kappa-Restricted Light Chain Deposition Disease, renal cortex
Diagnose This!

Diagnose This (July 23, 2018)

What is your diagnosis? The images show thickened tubular basement membranes on PAS stain and kappa restricted staining of the…

By L. Nich Cossey, MD