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Hemosiderosis
An 80-year-old white male presents with a creatinine of 4.2 (baseline 1.1) on routine lab examination. His medical history is…
Lupus Nephritis (Class IV)
A 20-year-old female presents with hematuria, proteinuria, and a creatinine of 1.2 mg/dl. Serologies for ANA are positive. Complement levels…
Renal Oxalosis
A 25-year-old female presents to the hospital with malaise and a creatinine of 3.5. She reports that she was in…
Minimal Change Disease
A 70-year-old female presents with nephrotic range proteinuria.She had been in her regular state of health until 2 weeks ago…
Diagnose This (January 21, 2019)
A limited sample showed this lesion and negative staining on paraffin-retrieved IF tissue. What is your diagnosis? …
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…
Infection-Associated Glomerulonephritis
A 60-year-old male presents with a painful left hip, hematuria, and a creatinine of 1.5 mg/dl. He was recently hospitalized…
IgA Dominant Infection-Associated Glomerulonephritis
A 65-year-old male presents to the ER with a new onset rash and blood in his urine. The ER doc…
Diagnose This (December 10, 2018)
What is your diagnosis? The images show a necrotizing, crescentic, and endocapillary proliferative glomerulonephritis with IgA deposition…
Pushing Glass (December 7, 2018)
The patient is a 50-year-old female who presents 2 days after a renal transplant with a delay in graft function…
Diagnose This (December 3, 2018)
What is your diagnosis? What would you want to confirm your diagnosis? …
Diagnose This (November 12, 2018)
What is your diagnosis and what do you need to prove it? …
Twitter Poll (November 1, 2018)
ANSWER: D Drug-induced AIN may account for 60-70% of AIN cases. Some offending drugs include: antibiotics, proton pump inhibitors, NSAIDs,…
Polyomavirus Nephropathy in Native Kidney
Polyomavirus nephropathy (PVN), predominantly caused by BK virus reactivation in the urogenital tract, is an important complication of renal allografts…
Fungus Microabscess
Cortical microabscess formation is a clue to the presence of an infectious organism. Various bacteria, viruses, fungi, and even parasites…
