Figure 2: Histopathology: a) chronic ventricular ulcer with a distinct lymphofollicular partially lymphoplasmacellular infiltration (HE staining,40x) b) storiform fibrosis and obliterating phlebitis (HE staining, 400x) c) eosinophilic inflammation, along with (HE staining and immunohistology, 40x/400x) d) an increased amount of IgG4 positive plasma cells (400x)