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Abstract: FR-PO045

IgA Vasculitis With Cryoglobulin-Like Deposits in Kidney Following COVID-19 Infection

Session Information

Category: Coronavirus (COVID-19)

  • 000 Coronavirus (COVID-19)


  • Gupta, Rajib K., LSU Health Shreveport, Shreveport, Louisiana, United States
  • Mengnjo, Austine Y., Reading Hospital, West Reading, Pennsylvania, United States

Infection-related IgA glomerulonephritis with large paramesangial immune deposits appearing like intraluminal cryo deposits have occasionally been described in literature temporally associated with Staphylococcus infection. COVID-19 associated glomerular disease is classically known to manifest as collapsing glomerulopathy, although other types have been reported.

Case Description

We present a case of a 76-year old Hispanic female with a history of type 2 diabetes, hypertension and a 2-month old history of COVID-19 pneumonia who recently presented with acute kidney injury, dark urine, shortness of breath and leg edema. 2 weeks prior, she had presented with a history of purpuric rash. Urinalysis had shown hematuria and proteinuria, and a skin biopsy showed IgA vasculitis. Blood culture for Staphylococcus was negative. A kidney biopsy now showed IgA glomerulonephritis with focal crescents along with intraluminal pseudothrombi (cryo-plugs) positive for IgA on immunofluorescence. Electron microscopy showed intraluminal occlusive electron-dense deposits. Serum cryoglobulin was negative. The patient was treated with steroids and oral cyclophosphamide, and she responded significantly to treatment.


Our case shows a unique glomerular manifestation of COVID-19 infection in the form of IgA vasculitis with intraluminal cryo-like features, not previously described in literature.