较高倍镜下见严重的黏膜炎症。结肠黏膜上皮表明缺少杯状细胞，表面上有渗出物。急慢性炎症细胞都存在。
At higher magnification, the intense inflammation of the mucosa is seen. The colonic mucosal epithelium demonstrates loss of goblet cells. An exudate is present over the surface. Both acute and chronic inflammatory cells are present.
