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(28 Results)![Disintegrating Capillary Loop](https://www.arkanalabs.com/wp-content/uploads/2022/05/Disintegrating-Capillary-Loop-432x288.jpg)
Disintegrating Capillary Loop Riddled with Microperformations
This acellular scanning EM shows disintegrating capillary loop riddled with microperformations in a patient with crescentic glomerulonephritis. Photo credits to…
![fibrinoid necrosis and crescent formation](https://www.arkanalabs.com/wp-content/uploads/2022/04/linear-IgG-staining-along-the-GBM-432x288.jpg)
Diagnose This (February 21, 2022)
In a patient with AKI and hematuria, what is your diagnosis? …
![](https://www.arkanalabs.com/wp-content/uploads/2022/02/Figure-1-432x288.jpg)
Diagnose This (February 14, 2022)
In a 25yo with sepsis post-cholecystectomy and C. diff colitis, what is your diagnosis? …
![ANCA-associated vasculitis](https://www.arkanalabs.com/wp-content/uploads/2022/04/ANCA-associated-vasculitis-432x288.jpg)
Diagnose This (January 24, 2022)
In a patient with RPGN and this morphological finding on biopsy, what is the most likely diagnosis? …
![glomerulus showing a fibrocellular crescent](https://www.arkanalabs.com/wp-content/uploads/07/27/13-copy-432x288.jpg)
Glomerulus Showing Fibrocellular Crescent
Todays eyeSCANdy image shows acellular scanning EM with a glomerulus showing a fibrocellular crescent (bottom). Photo credits to Dr. Stephen…
![Glomerulus Obliterated By A Fibrous Crescent](https://www.arkanalabs.com/wp-content/uploads/07/14/55-copy-432x288.png)
Glomerulus Obliterated By A Fibrous Crescent
This EM image shows a glomerulus obliterated by a fibrous crescent Photo credits to Dr. Stephen Bonsib!
![Endocarditis-Associated Glomerulonephritis, arkana laboratories, renal pathology teaching points](https://www.arkanalabs.com/wp-content/uploads/Image-1-copy-7-432x288.jpg)
Endocarditis-Associated Glomerulonephritis
The patient is a 45-year-old IV drug user who presents with fevers, chills, hematuria, and fatigue. On laboratory testing, he…
![ANCA-mediated glomerulonephritis, arkana laboratories, renal pathology, kidney biopsy](https://www.arkanalabs.com/wp-content/uploads/xxx7-copy-432x288.jpg)
Diagnose This (June 24, 2019)
Immunofluorescence shows C3 (2-3+), IgM (1+), kappa (trace) and lambda (trace). What is your diagnosis? …
KDIGO Connections: ANCA Refactory
How do you manage your patients who have refractory ANCA-related glomerulonephritis?
![anca-associated-glomerulonephritis, art of medicine](https://www.arkanalabs.com/wp-content/uploads/necrotizing-and-crescentic-glomerulonephritis-painting-copy-432x288.jpg)
Art of Medicine: ANCA-Associated Glomerulonephritis
The painting above shows a crescentic glomerulonephritis and necrotizing arteritis. A mixed interstitial inflammatory infiltrate is shown in the top…
![Alport Syndrome, Digging Deeper, Arkana laboratories, renal pathology, kidney pathology, nephropathology](https://www.arkanalabs.com/wp-content/uploads/DiggingDeeper-1-432x288.jpg)
Digging Deeper, or How We Never Quit
We received the biopsy from a 25-year-old female who presented for evaluation of nephrotic range proteinuria. Lab evaluation reveals a…
![Anti-GBM, renal pathology , diagnose this!, arkana laboratories](https://www.arkanalabs.com/wp-content/uploads/Necrotizing-Lesion-copy-432x288.jpg)
Diagnose This (January 21, 2019)
A limited sample showed this lesion and negative staining on paraffin-retrieved IF tissue. What is your diagnosis? …
![ANCA Disease, LECT2 Amyloid, IgG4-Related Disease, AL amyloidosis, ANCA, digging deeper, Dr. Messias, Arkana Laboratories, pathology diseases](https://www.arkanalabs.com/wp-content/uploads/DiggingDeeper-432x288.jpg)
Digging Deeper – Here, There, and Everywhere
This biopsy came from an elderly gentleman in his 80s, who presented with acute renal failure. His serum creatinine had…
![endocarditis-associated glomerulonephritis in renal biopsy at Arkana Laboratories](https://www.arkanalabs.com/wp-content/uploads/x46-copy-432x288.jpg)
Diagnose This (December 3, 2018)
What is your diagnosis? What would you want to confirm your diagnosis? …
![ANCA-Mediated Vasculitis](https://www.arkanalabs.com/wp-content/uploads/xx31-copy-432x288.jpg)
Diagnose This (August 20, 2018)
What is your presumed diagnosis in the absence of immunofluorescence and electron microscopy? …