PMC9978861_01
Palpable purpuric lesions on the legs
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FIG1
Palpable purpuric lesions on the arms
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FIG2
Glomerular IgA staining by immunofluorescence microscopy
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FIG3
The exams showed subnephrotic proteinuria on a 24h collection (2252mg/dL) and worsening of kidney function with SCr that rose to 1.19mg/dL with an eGFR of 49mL/min/1.73m2. The next step was a kidney biopsy which showed the presence of IgA deposits in immunofluorescence staining, compatible with IgA nephropathy (Figure 3).