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Case 1. Tight vascular infiltration of superficial and middermal vascular walls by neutrophils and focal leukocytoclasis with fibrin and red blood cell extravasation. (A and B, Hematoxylin and eosin stain; original magnifications: A, ×40; B, ×400). Case 2. C, Direct immunofluorescence shows vascular wall accumulation of IgA. (original magnification: ×200). Similar findings were observed in both cases.
