Search & Filter All Posts
All Articles
(15 Results)![Unresolved etiologies, Throwback Thursday, Dr. Fred Silva, Arkana Laboratories](https://www.arkanalabs.com/wp-content/uploads/07/23/TBT-with-Dr.-Fred-Silva-432x288.jpg)
Unresolved Etiologies: When the Clinical Acumen Takes Place
Dr. Silva comments on several diagnostic dilemmas where the pathology pattern leads to a plethora of possibilities.
![Anti-Brush Border Antibody Disease](https://www.arkanalabs.com/wp-content/uploads/Anti-brush-border-antibody-disease-painting-copy-432x288.jpg)
Art of Medicine: Anti-Brush Border Antibody Disease
The above painting shows massive tubular basement membrane (electron dense on EM) deposits along proximal tubules with sparing of the…
![](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…
![Inflammatory Bowel Disease, IBD, renal disease, chronic kidney disease, renal biopsy, Arkana Laboratories](https://www.arkanalabs.com/wp-content/uploads/Screen-Shot-2019-04-05-at-11.46.55-AM-432x288.png)
Disease Week: Renal Manifestations of Inflammatory Bowel Disease (IBD)
Monday Extraintestinal manifestations of inflammatory bowel disease are common and involve nearly every organ system. Renal and urinary involvement has…
![Membranous glomerulopathy](https://www.arkanalabs.com/wp-content/uploads/3524-01-432x288.jpg)
IgG4 Membranous
First identified in the pancreas as autoimmune pancreatitis, the IgG4-related disease is now known to affect many organs and body…
![Interstitial Eosinophils](https://www.arkanalabs.com/wp-content/uploads/Eosinophils-copy-2-432x288.jpg)
Interstitial Eosinophils
Prominent interstitial eosinophils (see arrow) are most often associated with allergic-type acute interstitial nephritis (AIN). However, interstitial eosinophils are not…
![Sjogrens Syndrome](https://www.arkanalabs.com/wp-content/uploads/4712-01-copy-432x288.jpg)
Sjogrens
Sjgrens syndrome is an autoimmune disease involving primarily the lacrimal and salivary glands. However, up to 27% of patients will…
![renal biopsy, arkana laboratories, renal tissue,granulomatous interstitial nephritis](https://www.arkanalabs.com/wp-content/uploads/granuloma-copy-2-432x288.jpg)
Granulomatous Interstitial Nephritis
The photomicrograph shows an interstitial granuloma from a case of granulomatous interstitial nephritis. The presence of granulomas within interstitial nephritis…
![Chronic Active Tubulointerstitial Nephritis](https://www.arkanalabs.com/wp-content/uploads/Fig-1-copy-11-432x288.jpg)
Chronic Active Tubulointerstitial Nephritis
Chronic tubulointerstitial nephritis in children may be secondary to a number of possible etiologies such as drug and other exogenous…
![Megalocytic Interstitial Nephritis](https://www.arkanalabs.com/wp-content/uploads/Fig-1-copy-9-432x288.jpg)
Megalocytic Interstitial Nephritis
This biopsy shows a chronic active interstitial nephritis with numerous interstitial foamy macrophages containing abundant PAS-positive cytoplasmic granules (Fig 1-3).…
![Tubulointerstitial nephritis with uveitis](https://www.arkanalabs.com/wp-content/uploads/2716-01-432x288.jpg)
Tubulointerstitial Nephritis with Uveitis
Tubulointerstitial nephritis with uveitis (TINU) was first described as a distinct entity by Dobrin, et al. in 1975. TINU primarily…
![(CIN) Chronic Interstitial Nephritis](https://www.arkanalabs.com/wp-content/uploads/13-4646-0002-copy-432x288.jpg)
Chronic Interstitial Nephritis
Chronic interstitial nephritis is a diagnosis made on renal biopsy when interstitial inflammation is present in a background of fibrosis…
![Eosinophil-Rich Inflammation in Diabetic Glomerulopathy](https://www.arkanalabs.com/wp-content/uploads/interstitial-eos-432x288.jpg)
Eosinophil-Rich Inflammation in Diabetic Glomerulopathy
These photomicrographs are from a patient with diabetic nephropathy as evidenced by the Kimmelstiel-Wilson nodules in the glomerulus present on…
![IgG4-Positive Plasma Cells](https://www.arkanalabs.com/wp-content/uploads/igg4-1-432x288.jpg)
IgG4
Renal parenchyma with florid interstitial fibrosis with thick bands of sclerosis expanding the interstitium and pushing the tubules apart on…