The Kidneys and How They Work
Where are the kidneys and why do we need kidneys? The kidneys are a pair of bean-shaped organs, each about…
Art of Medicine: Plasma Cell Rich Interstitial Nephritis
The above painting shows plasma cell rich interstitial inflammation with lymphocytic and plasma cell tubulitis, findings that can be seen…
NIH Lupus Nephritis Activity and Chronicity Indices
NIH Lupus Nephritis Activity and Chronicity Indices: A way to monitor response to treatment and disease progression. A semi-quantitative grading…
Congo Red Stain
The ability to detect amyloid deposits in human tissue is the critical first step in making a diagnosis of amyloidosis.…
Thyroidization
One of the many patterns of tubular atrophy in the kidney is the aptly named “thyroidization” pattern because of its…
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Arkana is a learning, teaching, innovating practice with one unifying passion: to work toward research breakthroughs that make our services unnecessary.
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Kidneys for Kids
What are the kidneys and what do they do? Your kidneys are organs shaped like beans (think kidney beans) and…
Glomerular Tuft
Today’s eyeSCANdy image shows glomerular tuft with overall intact architecture. Discrete masses of specular amyloid interrupt smooth uninvolved segments of…
Armanni Ebstein Lesion
Armanni-Ebstein lesion, originally described by Luciano Armanni in 1872, is characterized by vacuolization and PAS-positive glycogen accumulation within the cytoplasm…
Diagnose This!
Diagnose This (April 25, 2022)
This is an IgG IF viewed under both fluorescent and polarized light from a patient with AKI following endovascular procedure.…
Diagnose This (April 18, 2022)
This 32-year-old renal transplant recipient had AKI and pneumonia. A recent biopsy had shown borderline changes for TCMR and the…
Diagnose This (April 4, 2022)
This is the biopsy of a 62yo Hispanic female with hematuria and proteinuria. What is this stain and what is…
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