Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1756-0500-7-363/MediaObjects/13104_2013_Article_2915_Fig4_HTML.jpg)
Representative examples of pathological findings of the (A) “hypo-flow” and (B) “hyper-flow” surgical specimens. H&E staining revealed more active inflammation in “hyper-flow” (B) than in “hypo-flow” (A) cases. Vascular walls stained immunohistochemically using an anti-factor VIII antibody and macrophages stained with an anti-CD163 antibody were more prominent in “hyper-flow” (B) compared with “hypo-flow” (A) cases.