Art of Medicine

2022 Art of Medicine Competition

Welcome to the first Art of Medicine competition! This competition is dedicated to those who love kidneys and art. Pathologists,…

Systemic Lupus Erythematosus, SLE, lupus nephritis, arkana laboratories, disease week, renal pathology
Disease Week

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…

The Kidneys and How They Work illustration
Patient Resources

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…

Plasma Cell Rich Interstitial Nephritis
Art of Medicine

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…

Teaching Points


One of the many patterns of tubular atrophy in the kidney is the aptly named “thyroidization” pattern because of its…

About Us

Arkana is a learning, teaching, innovating practice with one unifying passion: to work toward research breakthroughs that make our services unnecessary.

Learn About Our Practice

Popular Posts

Kidneys for Kids abstract illustration
Patient Resources

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, capillary loop, arkana laboratories, renal pathology, kidney biopsy

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
Teaching Points

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!

Cholesterol Arterial Emboli
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!

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!

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…

Podcast Episodes

Search & Filter All Posts



LDL Receptor-Related Protein 2