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(22 Results)![Apolipoprotein A-IV Amyloidosis](https://www.arkanalabs.com/wp-content/uploads/Fig-1-copy-29-432x288.jpg)
Apolipoprotein A-IV Amyloidosis
This renal biopsy from a 71-year-old female, who presented with progressively worsening renal failure, shows unremarkable glomeruli by light microscopy…
![](https://www.arkanalabs.com/wp-content/uploads/s16-3893-igg0006-1-432x288.jpg)
Anti-Brush Border Antibody Disease IF
These photomicrographs show the classic immunofluorescence staining pattern for anti-LRP2 nephropathy, a disease that leads to severe renal tubular injury…
![IgG4-Related Tubulointerstitial Nephritis](https://www.arkanalabs.com/wp-content/uploads/Fig-1-copy-1-432x288.jpg)
IgG4-Related Tubulointerstitial Nephritis
IgG4-related disease is a systemic inflammatory and sclerosing disorder which may affect a wide range of different organs including the…
![Calcium Phosphate Deposits](https://www.arkanalabs.com/wp-content/uploads/Fig-1-copy-25-432x288.jpg)
Calcium Phosphate Deposits
Calcium phosphate deposits Calcium phosphate deposits within the kidney may be seen in the setting of hypercalcemia/ hypercalciuria or hyperphosphatemia/…
![Monoclonal Gammopathy](https://www.arkanalabs.com/wp-content/uploads/13-4851-paraffin-kappa0001-432x288.jpg)
Monoclonal Gammopathy of Renal Significance
The renal biopsy shown here has an MPGN pattern of injury by light microscopy. Routine immunofluorescence on the fresh (unfixed)…
![chronic transplant arteriopathy](https://www.arkanalabs.com/wp-content/uploads/Chronic-transplant-arteriopathy-copy-432x288.jpg)
Chronic Transplant Arteriopathy
This image shows an arterial cross-section with features of chronic transplant arteriopathy (a.k.a. sclerosing transplant vasculopathy and chronic allograft vasculopathy).…
![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…
![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…
![Malakoplakia](https://www.arkanalabs.com/wp-content/uploads/1-Two-cores-one-with-interstitial-inflammation-and-fibrosis-PDW-copy-1-432x288.jpg)
Malakoplakia
Learn about Malakoplakia An adult patient in the mid-fifties with a deceased donor renal transplant for three years (primary disease…
![Renal hemosiderosis](https://www.arkanalabs.com/wp-content/uploads/s17-2997-0003-copy-432x288.jpg)
Hemosiderin
Renal hemosiderosis is a rare etiology of kidney injury that occurs secondary to diseases with chronic intravascular hemolysis. The most…
![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).…