ChemoradiotherapyChemoradiotherapy, AdjuvantCombined Modality TherapyRadiotherapy, AdjuvantNeoadjuvant TherapyRectal NeoplasmsChemotherapy, AdjuvantFluorouracilCisplatinEsophageal NeoplasmsRadiotherapy DosageCarcinoma, Squamous CellHead and Neck NeoplasmsTreatment OutcomeAntineoplastic Combined Chemotherapy ProtocolsAdenocarcinomaNeoplasm StagingRadiotherapyDisease-Free SurvivalEsophagectomySurvival AnalysisDeoxycytidineNeoplasm Recurrence, LocalAnus NeoplasmsAdjuvants, ImmunologicPancreaticoduodenectomyPancreatic NeoplasmsSurvival RateAntineoplastic AgentsRetrospective StudiesPrognosisPositron-Emission TomographyDose FractionationFollow-Up StudiesAntimetabolites, AntineoplasticLymphatic MetastasisRemission InductionPreoperative CareOropharyngeal NeoplasmsInduction ChemotherapyTomography, X-Ray ComputedFreund's AdjuvantDigestive System Surgical ProceduresNasopharyngeal NeoplasmsKaplan-Meier EstimateHypopharyngeal NeoplasmsRadiotherapy, ConformalRadiation-Sensitizing AgentsProspective StudiesDeglutition DisordersLung NeoplasmsCarboplatinDrug Administration ScheduleLaryngeal NeoplasmsUterine Cervical NeoplasmsMucositisRadiation InjuriesRadiotherapy, Intensity-ModulatedCarcinoma, Non-Small-Cell LungPaclitaxelEsophagogastric JunctionBrachytherapyLeucovorinOrganoplatinum CompoundsTaxoidsOtorhinolaryngologic NeoplasmsOrgan Sparing TreatmentsFluorodeoxyglucose F18TegafurNeoplasms, Squamous CellMitomycinLaryngectomyCarcinoma, AdenosquamousColostomyFeasibility StudiesRadiotherapy, High-EnergyAdjuvants, PharmaceuticCarcinomaGastrectomyTime FactorsLymph Node ExcisionPostoperative CareStomach NeoplasmsNeoplasm, ResidualMuscle NeoplasmsRadiopharmaceuticalsPharyngectomyClinical Trials as TopicHydroxyureaRandomized Controlled Trials as TopicTherapeutic TouchNeck DissectionNeoplasm MetastasisSalvage TherapyTreatment FailurePneumonectomyOxonic AcidTumor Markers, BiologicalTumor BurdenPharyngeal Neoplasms