Rectal NeoplasmsPreoperative CareRadiotherapyRadiotherapy, AdjuvantRadiotherapy DosageCombined Modality TherapyNeoadjuvant TherapyPreoperative PeriodDose FractionationNeoplasm Recurrence, LocalAdenocarcinomaColectomyNeoplasm StagingRectumTreatment OutcomePostoperative CareRadiotherapy, ConformalAnal CanalSurvival AnalysisFluorouracilFollow-Up StudiesPrognosisRetrospective StudiesRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedLeucovorinRadiotherapy, High-EnergyPostoperative ComplicationsSurvival RateDisease-Free SurvivalLymphatic MetastasisTime FactorsRadiation InjuriesProspective StudiesRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedTumor Markers, BiologicalRadiation OncologyRadiosurgeryBrachytherapyCell LineageDose-Response Relationship, RadiationChemoradiotherapyAntineoplastic Combined Chemotherapy ProtocolsTomography, X-Ray ComputedBrain NeoplasmsCarcinoma, Squamous CellChemotherapy, AdjuvantPostoperative PeriodNasopharyngeal NeoplasmsLung NeoplasmsRadiation ToleranceCisplatinOrgans at RiskProstatic NeoplasmsRadiation-Sensitizing AgentsParticle AcceleratorsBreast NeoplasmsCranial IrradiationPelvic NeoplasmsMastectomy, SegmentalRadiation DosageRadiometryRadiation PneumonitisLaryngeal NeoplasmsOrgan Sparing TreatmentsSpinal NeoplasmsIntraoperative CarePredictive Value of TestsKaplan-Meier EstimateEsophageal NeoplasmsVincristineMagnetic Resonance ImagingHodgkin DiseaseAntineoplastic AgentsRadiodermatitisHeavy Ion RadiotherapyNeoplasms, Radiation-InducedDacarbazineNeoplasms, Second PrimaryRisk FactorsCarcinomaRadioisotope TeletherapyProstatectomyXerostomiaProcarbazineNeoplasmsIntraoperative PeriodCarcinoma, Non-Small-Cell LungPalliative CarePelvisBacteriolysisMastectomyRisk AssessmentKindling, NeurologicSarcomaDoxorubicinMultivariate AnalysisGlioblastomaUterine Cervical Neoplasms