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(192 Results)![methotrexate-induced crystalline nephropathy](https://www.arkanalabs.com/wp-content/uploads/2022/12/Figure-4-Polarizable-crystals-432x288.jpg)
Case 4: A Polarizable Precipitate
Clinical presentation A 49-year-old male presents with acute deterioration in renal function. The serum creatinine is 4.5 mg/dL. He has…
![necrotizing and crescentic gn, crescentic GN, Glomerulonephritis, Twitter Poll, Arkana Laboratories](https://www.arkanalabs.com/wp-content/uploads/Twitter-Poll-Template-23-scaled-432x288.jpg)
Twitter Poll (September 12, 2019)
ANSWER: B, Necrotizing and Crescentic In a case series by Boils et al. which included 49 patients with GN due…
![](https://www.arkanalabs.com/wp-content/uploads/Twitter-Poll-Template-21-scaled-432x288.jpg)
Twitter Poll (August 7, 2019)
ANSWER: D, AIN The most common finding on kidney biopsies in patients with immune checkpoint inhibitors (ICPIs)induced AKI is acute…
![Type 1 Cryoglobulinemic Glomerulonephritis, arkana laboratories](https://www.arkanalabs.com/wp-content/uploads/Image-1-copy-3-432x288.jpg)
Type 1 Cryoglobulinemic Glomerulonephritis
The patient is a 75 year-old female who presents with proteinuria, a necrotic skin lesion on her lower extremity, and…
![Collapsing Glomerulopathy](https://www.arkanalabs.com/wp-content/uploads/collapsing-glomerulopathy-copy-scaled-432x288.jpg)
Art of Medicine: Collapsing Glomerulopathy
The above painting shows a glomerulus with capillary tuft collapse, visceral epithelial cell hyperplasia, and numerous protein resorption droplets within…
![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? …
![Kappa Light Chain Cast Nephropathy, teaching point, Arkana Laboratories, renal pathology](https://www.arkanalabs.com/wp-content/uploads/Figure-1-copy-17-432x288.jpg)
Light Chain Cast Nephropathy
A 75-year-old female is found to have a creatinine of 4.0 mg/dL on a routine laboratory examination. At the hospital,…
![C3 Glomerulonephritis, Arkana Laboratories, Disease Week, renal disease, kidney pathology](https://www.arkanalabs.com/wp-content/uploads/Disease_Week_Banner_C3-432x288.jpg)
Disease Week: C3 Glomerulonephritis
Monday Rediscovery of Complement Mesangial C3 deposition only within the glomerulus has been reported since 1980. Only recognized recently as…
KDIGO Connections: Atypical Hemolytic-Uremic Syndrome
How do you treat patients with atypical hemolytic-uremic syndrome? Learn more about treatment and atypical hemolytic-uremic syndrome through KDIGO Connections!…
![Lysozyme Nephropathy, art of medicine](https://www.arkanalabs.com/wp-content/uploads/Acute-tubular-injury-with-lysozyme-staining-painting-copy-1-432x288.jpg)
Art of Medicine: Lysozyme Nephropathy
The painting above shows acute tubular injury with numerous intracytoplasmic inclusions within proximal tubular epithelium, which can be seen in…
![Acute kidney injury, anti-centromere antibodies, ischemia, schistoctes, scleroderma renal crisis, thrombotic microangiopathy, scleroderma](https://www.arkanalabs.com/wp-content/uploads/Figure-1-copy-14-432x288.jpg)
Scleroderma
The patient is a 32-year-old African American female who presents with hypertensive urgency, positive ANA, positive anti-RNA polymerase III antibody,…
![IgAN & Inflammatory Bowel Disease, Igan, arkana laboratories, renal pathology, nephropathology, chronic kidney disease](https://www.arkanalabs.com/wp-content/uploads/Twitter-Poll-Template-14-432x288.jpg)
Twitter Poll (April 3, 2019)
ANSWER: C IgAN is the most frequent diagnosis seen in kidney biopsies from patients with renal failure and history of…
![Acute kidney injury, chryoglobulinemia, glomerulonephritis, hyaline thrombi, masked deposits, paraffin immunofluorescence, Cryoglobulinemic Glomerulonephritis](https://www.arkanalabs.com/wp-content/uploads/Figure-1-copy-13-432x288.jpg)
Cryoglobulinemic Glomerulonephritis
The patient is a 60-year-old male who presents with proteinuria, hematuria, and a creatinine of 2.8 mg/dL. He was in…
![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…