RectumColonic NeoplasmsRectal NeoplasmsColon, DescendingRectal DiseasesColon, SigmoidColon, TransverseColon, AscendingAnal CanalSigmoid NeoplasmsIntestinal MucosaProctoscopyIntestinal PolypsColonic DiseasesColorectal NeoplasmsAdenocarcinomaColonoscopyColonMegacolonColostomyColectomyDiverticulum, ColonHT29 CellsProctitisAdenomaAdministration, RectalCecal NeoplasmsRectal ProlapseAzoxymethaneIntestine, LargeColitis, UlcerativeGastrointestinal MotilitySigmoidoscopyEnemaDefecationCecumDigestive System Surgical ProceduresAdenoma, VillousColitisIleumGastrointestinal HemorrhageDigestive System NeoplasmsAnastomosis, SurgicalDigestive SystemRadiotherapy Planning, Computer-AssistedIleostomySurgical StaplersGastrointestinal NeoplasmsAnus, ImperforatePelvis1,2-DimethylhydrazineNeoplasms, Multiple PrimaryConstipationIntestinesIntestinal ObstructionFecesPerineumImmunohistochemistryBarium SulfateIntestinal PerforationBrachytherapyRadiotherapy DosageNeoplasmsCell Line, TumorIntestinal NeoplasmsCarcinomaDimethylhydrazinesPolypsRectovaginal FistulaSigmoid DiseasesOrgans at RiskNeoplasm StagingAdenomatous PolypsMuscle, SmoothGastrointestinal TractTime FactorsCarcinogensFecal IncontinencePrecancerous ConditionsTumor Cells, CulturedAdenomatous Polyposis ColiPolyphloretin PhosphateHirschsprung DiseaseUrinary BladderVaginaCatharticsSenna ExtractGene Expression Regulation, NeoplasticCaco-2 CellsRadiotherapy, Intensity-ModulatedUlcerCarcinoembryonic AntigenColonic PolypsIntestine, SmallMyenteric PlexusProctocolectomy, RestorativeMucinsAnus DiseasesManometryCrohn Disease