ProctitisPelvic NeoplasmsRadiation InjuriesArgonAdministration, RectalRadiotherapyPelvisRectumEnemaGastrointestinal HemorrhageLymphogranuloma VenereumFormaldehydeRadiation DosageRadiation, IonizingAntidiarrhealsProctocolitisDose-Response Relationship, RadiationRectal NeoplasmsRectal DiseasesRadiation ToleranceRadiationSuppositoriesRadiation ProtectionCombined Modality TherapyRadiotherapy DosageRadiation MonitoringBrachytherapyUterine Cervical NeoplasmsTreatment OutcomeColitis, UlcerativeRadiotherapy, AdjuvantMesalamineRadiation Injuries, Experimental