Acute Colitis due to Clostridium Difficile

60 year old patient presented with diarrhea and sepsis. CT scan abdomen showed acute colitis. See the images below

CT abdomen with contrast demonstrates
1 &2)Edema of sigmoid colon wall
     3) Diverticula
4&5) Fat stranding, which is another sign of inflammation
Down below, same patient after 5 days of treatment with oral vancomycin showing significant improvement in colitis.