Slide 5 

A medium power view shows the mucosal ulcer to better advantage in the left panel.  There is prominent submucosal inflammation with scattered non-caseating granulomas.  These  sarcoid-like granulomas are found in many cases of Crohn's disease (hence the alternate name "granulomatous colitis").  They are not found in ulcerative colitis. These granulomas are shown at higher power in the right panel.

Slide 6

A high power view of a non-caseating Crohn’s granuloma with epithelioid giant cells.