Liposarcoma, MyxoidLiposarcomaRNA-Binding Protein FUSTranscription Factor CHOPSoft Tissue NeoplasmsDioxolesTetrahydroisoquinolinesLipomaMuscle NeoplasmsChromosomes, Human, Pair 12Chromosomes, Human, Pair 16RNA-Binding Protein EWSOncogene Proteins, FusionRetroperitoneal NeoplasmsSarcomaNeoplasms, Adipose TissueTranslocation, GeneticExtremitiesCCAAT-Enhancer-Binding ProteinsAntineoplastic Agents, AlkylatingNeoplasms, Connective and Soft TissueChondrosarcoma