PMC9816133_01
The optical microscope results of the patient. (A) Periodic acid-Schiff staining (200x magnification). The black arrow indicates moderate to diffuse proliferation of mesangial cells and stroma (B) Periodic acid silver methenamine staining and Masson's staining (200x magnification). The black arrow indicates severe diffuse proliferation of mesangial cells and stroma.
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The periodic acid-Schiff staining showed moderate to diffuse proliferation of mesangial cells and stroma ( Figure 1A ), and the periodic acid silver methenamine staining and Masson's staining showed severe diffuse proliferation of mesangial cells and stroma ( Figure 1B ).
The electron microscope results of the patient. The black arrow indicates the lesions.
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These results were consistent with mild to moderate mesangial proliferative IgAN (Type IIa), as shown in  Figure 2 .