Table 2.
Montreal classification of patients with inflammatory bowel disease.
| CD (n = 80) | UC (n = 110) | |
|---|---|---|
| UC disease extent | ||
| E1: proctitis, n (%) | 20 (18.2) | |
| E2: left-sided colitis, n (%) | 47 (42.7) | |
| E3: extensive colitis, n (%) | 43 (39.1) | |
| CD disease phenotype | ||
| L1: ileum, n (%) | 46 (57.5) | |
| L2: colon, n (%) | 6 (7.5) | |
| L3: ileo-colon, n (%) | 27 (33.8) | |
| L4: UGI tract, n (%) | 1 (1.3) | |
| CD disease behavior | ||
| B1: nonstricturing, nonpenetrating#, n (%) | 15 (18.8) | |
| B2: stricturing#, n (%) | 48 (60.0) | |
| B3: penetrating#, n (%) | 17 (21.3) | |
| P: perianal involvement, n (%) | 17 (21.3) |
Abbreviations: CD: Crohn's disease; UC: ulcerative colitis; UGI: upper gastrointestinal. #Includes cases with perianal involvement.