Table 2

Montreal classification at the time of diagnosis of patients with Crohn’s disease treated at two reference centres in Salvador, Bahia, Brazil (2019−2021)

n=220
Age
 A1 (<16 years or younger)12 (5.5%)
 A2 (17–40 years)149 (67.7%)
 A3 (>40 years)59 (26.8%)
Location
 L1 (terminal ileum)35 (15.9%)
 L2 (colon)96 (43,6%)
 L3 (ileocolon)55 (25.0%)
 L4 (isolated upper GI)2 (0.9%)
 L1L417 (7.7%)
 L2+L43 (1.4%)
 L3+L412 (5.5%)
Behaviour
 B1 (non-stricturing, non-penetrating)119 (54.1%)
 B2 (stricturing)20 (9.1%)
 B3 (penetrating)20 (9.1%)
 B1p48 (21.8%)
 B2p7 (3.2%)
 B3p6 (2.7%)
 Upper GI involvement34 (15.4%)
 Perianal disease61 (27.7%)
  • GI, gastrointestinal; p, perianal disease; y, years.