LiposarcomaLiposarcoma, MyxoidRNA-Binding Protein FUSRetroperitoneal NeoplasmsSoft Tissue NeoplasmsNeoplasms, Adipose TissueLipomaTranscription Factor CHOPNeoplasms, Connective and Soft TissueChondrosarcomaMuscle NeoplasmsChromosomes, Human, Pair 12SarcomaDioxolesTetrahydroisoquinolinesFibromaSpermatic CordLeiomyosarcomaOncogene Proteins, FusionGenital Neoplasms, MaleHistiocytoma, Benign FibrousMyxomaHeterogeneous-Nuclear RibonucleoproteinsHistiocytoma, Malignant FibrousRNA-Binding Protein EWSChromosomes, Human, Pair 16MesocolonTranslocation, GeneticProto-Oncogene Proteins c-mdm2ThighCell DedifferentiationMyxosarcomaMediastinal NeoplasmsImmunohistochemistryExtremities