IgA Vasculitis Nephritis: A Case Series and Comparison of Treatment Guidelines

Figure 1

Light and electron microscopy, kidney biopsy from patient 1. (a) Hematoxylin and eosin stain showing endocapillary segmental hypercellularity. (b) PAS stain showing crescent formation. (c) DIF showing granular mesangial IgA staining (+2). (d) Electron microscopy showing segmental mesangial and paramesangial immune deposits. DIF: direct immunofluorescence. IgA: immunoglobulin A. PAS: periodic acid-schiff.

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