ChondrosarcomaChondrosarcoma, MesenchymalAntineoplastic Combined Chemotherapy ProtocolsChondromaBone NeoplasmsChemotherapy, AdjuvantEnchondromatosisCombined Modality TherapyAntineoplastic AgentsTreatment OutcomeDoxorubicinCisplatinChordomaCyclophosphamideOsteosarcomaDisease-Free SurvivalFemoral NeoplasmsPrognosisSkull Base NeoplasmsMyxosarcomaCartilageNeoadjuvant TherapyNeoplasm Recurrence, LocalNeoplasm StagingSurvival AnalysisLung NeoplasmsSurvival RateEtoposideBreast NeoplasmsExostoses, Multiple HereditaryRibsNeoplasms, Connective and Soft TissueDrug Administration SchedulePelvic BonesSoft Tissue NeoplasmsMethotrexateChondroitinases and Chondroitin LyasesChondromatosis, SynovialProteoglycansCarboplatinDrug Resistance, NeoplasmPaclitaxelMaxillary NeoplasmsInduction ChemotherapyVinblastineCell Line, TumorOsteochondromaFollow-Up StudiesNeoplasm Metastasis