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Diagnose This (January 12, 2021)
What are the two major changes seen in this image from an allograft kidney and what are these findings concerning…
Diagnose This (December 10, 2018)
What is your diagnosis? The images show a necrotizing, crescentic, and endocapillary proliferative glomerulonephritis with IgA deposition…
Infection-Associated Glomerulonephritis
This biopsy is taken from a 39-year-old woman who presents with abdominal pain, ascites, and lower extremity edema. Her serum…
Acute Pyelonephritis in Transplants
Acute pyelonephritis in transplant settings (allograft pyelonephritis) is a known cause of allograft dysfunction and a complication that occurs in…
Renal Vein Obstruction
This biopsy is from a 60-year-old female, status post renal transplant 5 days prior, who was found to have mechanical…
Acute Post-Infectious Glomerulonephritis
These renal biopsy images are from an 8-year-old boy who experienced the abrupt onset of hypertension, lower extremity edema, gross…
Acute Pyelonephritis
This renal biopsy from a 65-year-old male with a history of E. Coli urinary tract infection and bacteremia shows severe…
Chronic Active Tubulointerstitial Nephritis
Chronic tubulointerstitial nephritis in children may be secondary to a number of possible etiologies such as drug and other exogenous…
Acute Pyelonephritis
The renal biopsy image shows features characteristic of acute pyelonephritis. There is a neutrophil-rich interstitial inflammatory infiltrate and evidence of…
Renal Medullary Angiitis
This 56-year-old female presented with acute kidney injury, hematuria, and mild proteinuria. All serologic studies were negative except for antineutrophil…
Medullary Angiitis
The attached photomicrographs show the classic histopathology of renal medullary angiitis, a lesion involving the vasa recta of the medulla.…
