"A3: > 40 years"
"E2: left-sided ulcerative colitis – distal to splenic-flexure"
"E3: extensive disease – distal to hepatic flexure"
"E4: pan-colitis – proximal to hepatic flexure"
"A1a: 0 to"
"A1b: 10 to"
"L4a: upper disease proximal to Ligament of Treitz"
"L4b: upper disease distal to Ligament of Treitz and proximal to distal 1/3 ileum"
"P: peri-anal disease modifier"
"P: peri-anal disease modifier"
"Related Pathology"
Expected headings
"Classification system"
"Crohn disease"
"Ulcerative colitis"
"Related Pathology"
"There are four categories in relation to Crohn disease, Age of onset and location provide descriptions in the nature of disease and can assist with determination of risk for progression and complications. Behaviour and growth provide an insight into the severity of disease, with increase in sub-categories reflect severity."
"This is also the case for ulcerative colitis. Severity of disease now utilises the paediatric ulcerative colitis activity index (PUCAI) point system; where >65 points would indicate severe disease and would therefore reflect as S1 in the classification 2."
"The Paris classification is built upon the Montreal classification to better capture the dynamic nature and complexities of the paediatric disease phenotype; the Montreal Classification has shown to have moderate inter-rate reliability when used in paediatric populations 1,3. This is among the list of revisions to the international classification system for inflammatory bowel disease, including Rome in 1991, Vienna in 1998 and Montreal in 2005."