Table 1 Montreal classification [10]
From: Crohn’s disease in a developing African mission hospital: a case report
Age at diagnosis | A1: less than 16 years |
A2: between 17 and 40 years | |
A3: over 40 years | |
Location | L1: ileal |
L2: colonic | |
L3: ileocolonic | |
L4: isolated upper digestive | |
Behavior | B1: nonstricturing, nonpenetrating |
B2: stricturing | |
B3: penetrating | |
P: perianal disease |