Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40792-017-0316-0/MediaObjects/40792_2017_316_Fig3_HTML.gif)
a, b A mixture of hematoma and abscess (arrows) in the rectal wall in hematoxylin-eosin (HE) staining (a magnification ×20; b magnification ×200). c Granulocytes and monocytes (highly magnified image in a small window) and fibrinous necrosis (arrow heads) in the vessel were observed in HE (magnification ×100)