Case 8. 

Clostridium difficile-induced pseudomembranous colitis (53 y-o M)
　 　 　 　
　 Colon biopsy from a patient suffering from watery diarrhea after antibiotics therapy 　
　 　 　 　

　

 　 Pseudomembrane consisting of fibrinous exudates and neutrophils is seen on the surface of the eroded and highly inflamed colonic mucosa (HE)