EnemaCaffeineBarium SulfateAdministration, RectalCentral Nervous System StimulantsMesalamineDiverticulum, ColonSigmoidoscopyPhosphorothioate OligonucleotidesTheobromineCoffeeColitis, UlcerativeColonoscopyRectumProctocolitisColonic DiseasesIntussusceptionAppendixProctitisAminosalicylic AcidsFecal ImpactionIleal Diseases