PMC7897659_01
Histological findings in the kidney biopsy of the patient. (A) PAS staining, (B) IgG staining, and (C) electron microscopy confirm the diagnosis of minimal change disease with no IgG positivity, no electron dense deposits, and diffuse loss of podocyte foot processes. (D) Only very few CD20 positive cells were detectable, mostly in the area of tubular atrophy and interstitial fibrosis.
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f1
A kidney biopsy revealed the diagnosis MCD ( Figure 1 ).