ChemoradiotherapyRectal NeoplasmsChemoradiotherapy, AdjuvantCombined Modality TherapyRadiotherapy, AdjuvantNeoadjuvant TherapyFluorouracilNeoplasm StagingDigestive System Surgical ProceduresChemotherapy, AdjuvantTreatment OutcomeEsophageal NeoplasmsAntineoplastic Combined Chemotherapy ProtocolsAdenocarcinomaRadiotherapy DosagePreoperative CareCisplatinNeoplasm Recurrence, LocalCarcinoma, Squamous CellSurvival RateRetrospective StudiesDisease-Free SurvivalRadiotherapySurvival AnalysisPrognosisHead and Neck NeoplasmsRectumEsophagectomyFollow-Up StudiesAntimetabolites, AntineoplasticDeoxycytidineDose FractionationLung NeoplasmsKaplan-Meier EstimateColonic NeoplasmsAntineoplastic AgentsProspective StudiesOrgan Sparing TreatmentsOrganoplatinum CompoundsPelvic NeoplasmsLeucovorinColorectal NeoplasmsColorectal SurgeryNasopharyngeal NeoplasmsPostoperative ComplicationsProctoscopyAnal CanalDrug Administration ScheduleTime FactorsInduction ChemotherapyNeoplasm InvasivenessPancreatic NeoplasmsNeoplasm MetastasisColectomyCarcinoma, Non-Small-Cell LungPositron-Emission TomographyColostomyCarcinomaStomach NeoplasmsHypopharyngeal NeoplasmsUterine Cervical NeoplasmsLymph Node ExcisionFeasibility StudiesRisk FactorsRadiation InjuriesEarly Detection of CancerLymphatic MetastasisTegafurTumor Markers, BiologicalLaparoscopyPelvisCarboplatinPelvic ExenterationRadiotherapy, ConformalPostoperative CareRisk AssessmentTomography, X-Ray ComputedPaclitaxelUtahEndosonographyOropharyngeal NeoplasmsTaxoidsAnastomotic LeakLaryngeal NeoplasmsAnastomosis, SurgicalDeglutition DisordersMultivariate AnalysisDisease ProgressionPredictive Value of TestsRemission InductionGastrectomyMucositisRadiation-Sensitizing AgentsGene Expression Regulation, NeoplasticFluorodeoxyglucose F18NeoplasmsAnus NeoplasmsOxonic AcidRadiotherapy, Intensity-ModulatedBrachytherapy