Radiotherapy Planning, Computer-AssistedTomography, X-Ray ComputedRadiotherapyRadiotherapy DosageRadiotherapy, ConformalRadiotherapy, AdjuvantRadiotherapy, Intensity-ModulatedRadiotherapy, High-EnergyCombined Modality TherapyDose FractionationRadiation InjuriesRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedAdaptive ImmunityRadiation OncologyTreatment OutcomeDose-Response Relationship, RadiationRadiosurgeryHead and Neck NeoplasmsBrachytherapyNeoplasm Recurrence, LocalNeoplasm StagingChemoradiotherapyAntineoplastic Combined Chemotherapy ProtocolsNasopharyngeal NeoplasmsBrain NeoplasmsDisease-Free SurvivalCarcinoma, Squamous CellRadiation ToleranceOrgans at RiskAdaptation, PhysiologicalSurvival RateRetrospective StudiesSurvival AnalysisLung NeoplasmsRadiation-Sensitizing AgentsFollow-Up StudiesRectal NeoplasmsChemotherapy, AdjuvantParticle AcceleratorsCisplatinPrognosisCranial IrradiationRadiometryRadiation DosageProstatic NeoplasmsRadiation PneumonitisPelvic NeoplasmsTime FactorsBreast NeoplasmsLaryngeal NeoplasmsMastectomy, SegmentalHodgkin DiseaseRadiodermatitisAdaptation, BiologicalHeavy Ion RadiotherapyNeoplasms, Radiation-InducedVincristineNeoplasmsNeoplasms, Second PrimaryDacarbazineOrgan Sparing TreatmentsXerostomiaProcarbazineFluorouracilAntineoplastic AgentsNeoadjuvant Therapy