Histopathologic features of Iga Vasculitis
The histopathologic features of IgAV (HSP) are LCV or necrotizing SVV.
The characteristic direct immunofluorescence finding is predominantly IgA deposition in affected blood vessels. IgA can also be found in the glomerular mesangium.
The skin biopsy finding of IgA deposition is what makes this syndrome pathologically different from other forms of SVV.
