Observational Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Dec 26, 2021; 9(36): 11285-11299
Published online Dec 26, 2021. doi: 10.12998/wjcc.v9.i36.11285
Table 3 Montreal classification of Crohn’s disease and ulcerative colitis at baseline, n (%)
Montreal classification of CD
CD (n = 133)
Age of diagnosis
A1 (below 16 yr)15 (11)
A2 (between 17 and 40 yr)90 (68)
A3 (above 40 yr)18 (14)
- 10 (8)
Location
L1 (ileal)62 (47)
L2 (colonic)16 (12)
L3 (ileocolonic)47 (35)
- 8 (6)
Location L41 (concomitant UGI disease)
Yes4 (3)
No87 (65)
- 42 (32)
Behavior
B1 (non-stricturing, non-penetrating)60 (45)
B2 (stricturing)24 (18)
B3 (penetrating)38 (29)
- 11 (8)
P2 (concomitant perianal disease)
Yes38 (29)
No84 (63)
- 11 (8)
Montreal classification of UCUC (n = 87)
Extent
E1 (Ulcerative proctitis)10 (11)
E2 (Left-sided UC - distal UC)18 (21)
E3 (Extensive UC - pancolitis)48 (55)
- 11 (13)
Severity
S1 (Mild UC)8 (9)
S2 (Moderate UC)54 (62)
S3 (Severe UC)15 (17)
- 10 (11)