CD40LG and Henoch-Schoenlein purpura: Endoscopically, there is a resolution of IgA vasculitis-related erosions and congestion, concurrent with the appearance of multiple ulcers in the stomach and duodenum.[6,7] Diagnostic significance is ascribed to CMV-IgM titers, CMV antigen, CMV-DNA, and the identification of viral inclusions in histopathological examination.