Neoplasm Recurrence, LocalRecurrenceSurvival RateDisease-Free SurvivalTreatment OutcomeRectal NeoplasmsCell SurvivalRetrospective StudiesSarcomaCombined Modality TherapyFollow-Up StudiesSurvival AnalysisSoft Tissue NeoplasmsNeoplasm StagingPrognosisMastectomy, SegmentalBone NeoplasmsRadiotherapy, AdjuvantCurettageBreast NeoplasmsTime FactorsKaplan-Meier EstimateSurvivalChondrosarcomaGiant Cell Tumor of BoneOsteosarcomaLymphatic MetastasisChemotherapy, AdjuvantNeoplasm MetastasisMastectomyFemoral NeoplasmsProportional Hazards ModelsAdenocarcinomaGraft SurvivalNeoplasm SeedingRisk FactorsNeoplasm InvasivenessDigestive System Surgical ProceduresTumor Markers, BiologicalCarcinoma, Intraductal, NoninfiltratingRadiotherapy DosageLimb SalvageLiver NeoplasmsLung NeoplasmsNeoadjuvant TherapyRadiotherapyProspective StudiesAmputationAntineoplastic Combined Chemotherapy ProtocolsFibromatosis, AggressiveMultivariate AnalysisLiposarcomaRetroperitoneal NeoplasmsExtremitiesBrachytherapyTomography, X-Ray ComputedImmunohistochemistryCarcinoma, Squamous CellSpinal NeoplasmsCarcinomaHistiocytoma, Malignant FibrousHistiocytoma, Benign FibrousHumerusCarcinoma, Ductal, BreastAntineoplastic ProtocolsReconstructive Surgical ProceduresPostoperative ComplicationsSacrumChemoradiotherapyLymph Node ExcisionReoperationOrthopedic ProceduresDermatofibrosarcomaRisk AssessmentPredictive Value of TestsChordomaActuarial AnalysisGlossectomyThoracic NeoplasmsCarcinoma, HepatocellularChemoradiotherapy, AdjuvantNeoplasm, ResidualSalvage TherapyHemipelvectomyOsteosarcoma, JuxtacorticalDisease ProgressionPhyllodes TumorCohort StudiesSkin NeoplasmsPelvic NeoplasmsDisarticulationSurgical FlapsCatheter AblationPreoperative CareMagnetic Resonance ImagingRectumLeg BonesVascular NeoplasmsLeiomyosarcomaHead and Neck Neoplasms