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Class III Focal Lupus Nephritis
This 9-year-old female was recently evaluated for lymphoid malignancy due to weight loss and intermittent fevers. Following a negative workup…
Intimal Arteritis
The image in Figure 1 shows mild intimal arteritis in an allograft biopsy from a patient who had undergone a…
Chronic Active Tubulointerstitial Nephritis
39 y/o male presents with acute kidney injury, creatinine 3.5 mg/dl. Bland urinalysis, serologic studies negative. Immunofluorescence study of the…
Pushing Glass (May 30, 2017)
A 62-year-old Asian male with a past medical history significant for ESRD secondary to hypertension S/P renal transplant (9 months…
Light Chain Cast Nephropathy
Immunofluorescence staining with kappa light chain and lambda light chain antibodies shows negative kappa in casts that are lambda positive…
Medullary Angiitis
The attached photomicrographs show the classic histopathology of renal medullary angiitis, a lesion involving the vasa recta of the medulla.…
IgG4
Renal parenchyma with florid interstitial fibrosis with thick bands of sclerosis expanding the interstitium and pushing the tubules apart on…
Pushing Glass (May 16, 2017)
A 15-year-old boy had a kidney biopsy because of the persistent nephrotic syndrome. His medical history is significant for resolved…
Atheroemboli
A PAS section shows an atheroembolus occluding an artery (arrow) with an adjacent ischemic appearing glomerulus. Atheroemboli appear as slit-like…
Oxalate Nephropathy
This biopsy is from a patient with metabolic acidosis, a CPK of 8000 mg/dl a creatinine of 22 mg/dl on…
Pushing Glass (May 2, 2017)
A 45 year-old African American man presented with pneumonia, colitis and acute kidney injury (serum creatinine- 6 mg/dL). What is…
Postpartum HUS
Postpartum hemolytic uremic syndrome This 22-year-old Caucasian female presented with acute renal failure and proteinuria five days after delivering her…
Necrotizing Vasculitis
Necrotizing Vasculitis as seen with Silver Methenamine Massons Trichrome (SMMT) stain on a renal biopsy. The immunofluorescence panel was negative…