“…In two paediatric inception cohorts, the occurrence of ASC was associated with an increased risk of colectomy (7,8). The advent of calcineurin inhibitors and infliximab has reduced the short term colectomy rate from 40-70% (9,(11)(12)(13) to approximately 10-20% in children (10,14,15) and the 1-year colectomy rate from ~60% (9,16) to 18-22% (10,14,16).…”