| Marker | Ulcerative colitis | Crohn disease |
| Type of colonic involvement | contineous, ascending involvemnent starting from the rectum | segmental |
| Ulcers | mucosal, superficial | deep ulcerations |
| mucocal hemorrhage | +++ | (+) |
| rectal involvement | +++ | (+) |
| longitudinal ulcers | + | +++ |
| aphtous lesions in normal mucosa | - | +++ |
| fistula | (+) | ++ |
| pseudopolyps | ++ | + |
| stenosis | + | ++ |
| perianal lesions | + | ++ |
