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intimal arteritis as well as surrounding glomeruli with a membranoproliferative pattern of injury
Diagnose This!

Diagnose This (July 9, 2018)

What is your diagnosis in this native kidney biopsy? …

By L. Nich Cossey, MD
Membranous Glomerulopathy
Diagnose This!

Diagnose This (June 25, 2018)

What immunofluorescence stain is shown here, what is the immune complex deposition pattern and what disease does it represent? …

By L. Nich Cossey, MD
ANCA-mediated disease
Diagnose This!

Diagnose This (June 18, 2018)

In the presence of a negative immunofluorescence panel, what is your diagnosis? …

By L. Nich Cossey, MD

Infection-Associated Glomerulonephritis
Diagnose This!

Diagnose This (June 11, 2018)

What is this finding and what is it classically associated with? …

By L. Nich Cossey, MD
Fibrillary Glomerulopathy
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Diagnose This! (June 4, 2018)

The patient is a 67 y/o Caucasian female with slowly progressive kidney disease and 2.3 gm/24 hr proteinuria. Aside from…

By L. Nich Cossey, MD
Myoglobin Casts
By L. Nich Cossey, MD

Acute Interstitial Nephritis
By L. Nich Cossey, MD
Fabry disease
By L. Nich Cossey, MD
secondary focal segmental glomerulosclerosis
Diagnose This!

Diagnose This (April 16, 2018)

The immunofluorescence study is negative. What is your diagnosis? …

By L. Nich Cossey, MD

normal renal tissue, renal cortex, arkana laboratories, kidney biopsy
By L. Nich Cossey, MD
Infection-Associated Glomerulonephritis
Diagnose This!

Diagnose This (April 2, 2018)

What is the most likely diagnosis? …

By L. Nich Cossey, MD
Diagnose This!

Diagnose This (March 26, 2018)

In the setting of weak C3 (1-2+) only staining by routine immunofluorescence, what is your diagnosis? …

By L. Nich Cossey, MD

Transplant Arteriopathy, active antibody-mediated rejection
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Diagnose This! (March 19, 2018)

What is your diagnosis in this renal transplant biopsy? …

By L. Nich Cossey, MD
fibrillary glomerulopathy
By L. Nich Cossey, MD
nodular glomerulosclerosis
Diagnose This!

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…

By L. Nich Cossey, MD