Fig. 2. (A) Histopathology findings of the endoscopic biopsy specimen showing heavy neutrophil infiltration in the esophageal mucosa and capillary proliferation suggesting vasculitis (H&E, x400). (B) Acid-fast bacillus special stain shows a negative result (Acid-fast stain, x200). (C) Immunohistochemistry assay for cytomegalovirus shows a negative result (Immunohistochemistry, x100).

Korean J Gastroenterol 2020;76:337~339 https://doi.org/10.4166/kjg.2020.149

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