Significance of antineutrophil cytoplasmic antibody in adult patients with Henoch-Schönlein purpura presenting mainly with gastrointestinal symptoms

Figure 1 Strong cytoplasmic (A) and nuclear (B) staining patterns of ANCA (C-ANCA and P-ANCA) detected by indirect IIF. Serum samples from patients were diluted and incubated with primary antibody, then with FITC-labeled affinity-purified goat anti-human IgG. The results were observed under fluorescence microscope.

Figure 2 Gastroendoscopy showing edema and congestion in the pyloric region (A) and several petechiae scattering throughout the colon (B).