Neoplasm Recurrence, LocalRecurrenceTreatment OutcomeRectal NeoplasmsRetrospective StudiesFollow-Up StudiesSarcomaSoft Tissue NeoplasmsPrognosisCombined Modality TherapyBone NeoplasmsNeoplasm StagingMastectomy, SegmentalRadiotherapy, AdjuvantBreast NeoplasmsCurettageDisease-Free SurvivalSurvival RateTime FactorsChondrosarcomaGiant Cell Tumor of BoneOsteosarcomaLiver NeoplasmsNeoplasm MetastasisLymphatic MetastasisSurvival AnalysisNeoplasm SeedingNeoplasm InvasivenessPancreatic NeoplasmsKaplan-Meier EstimateTumor Markers, BiologicalMastectomyChemotherapy, AdjuvantSkin NeoplasmsRisk FactorsAdenocarcinomaTomography, X-Ray ComputedFemoral NeoplasmsLung NeoplasmsDigestive System Surgical ProceduresImmunohistochemistryCarcinoma, Intraductal, NoninfiltratingFibromatosis, AggressiveSpinal NeoplasmsNeoplasmsAnesthetics, LocalLiposarcomaRadiotherapy DosageCarcinomaProspective StudiesRadiotherapyHistiocytoma, Benign FibrousRetroperitoneal NeoplasmsProportional Hazards ModelsCarcinoma, Squamous CellBrachytherapyLimb SalvageThoracic NeoplasmsAnesthesia, LocalPostoperative ComplicationsPelvic NeoplasmsAmputationCatheter AblationNeoadjuvant TherapyVascular NeoplasmsHistiocytoma, Malignant FibrousNeoplasms, Second PrimaryCarcinoma, Ductal, BreastParotid NeoplasmsExtremitiesHumerusCarcinoma, HepatocellularNeoplasms, Multiple PrimaryReconstructive Surgical ProceduresLymph Node ExcisionDermatofibrosarcomaPredictive Value of TestsUrinary Bladder NeoplasmsChordomaNeoplasms, Cystic, Mucinous, and SerousMagnetic Resonance ImagingMultivariate AnalysisSacrumReoperationMuscle NeoplasmsAbdominal NeoplasmsThyroid NeoplasmsRisk AssessmentOrthopedic ProceduresAntineoplastic ProtocolsColorectal NeoplasmsGlossectomyChemoradiotherapyNeoplasm, ResidualPhyllodes TumorCarcinoma, PapillaryHead and Neck NeoplasmsProstatic NeoplasmsNeoplasm GradingLeiomyosarcoma