Ulcerativecolitis(UC)isachronicinflammatoryboweldiseaseharacterizedbyarelapsingandremittingcourse.ThedirectandindirectcostsofthetreatmentofUCarehigh,andthequalityoflifeofpatientsisreduced,especiallyduringexacerbationofthedisease.TheincidenceandprevalenceofUCinKoreaarestilllowerthanthoseofWesterncountries,buthavebeenrapidlyincreasingduringthepastdecades.Variousmedicalandsurgicaltherapies,includingbiologics,arecurrentlyusedforthemanagementofUC.However,manychallengingissuesexist,whichsometimesleadtodifferencesinpracticebetweenclinicians.Therefore,theIBDstudygroupoftheKoreanAssociationfortheStudyofIntestinalDiseasesestablishedthefirstKoreanguidelinesforthemanagementofUCin.Thisisanupdateofthefirstguidelines.Itwasgenerallymadebytheadaptationofseveralforeignguidelinesaswasthefirstedition,anden
