LiposarcomaLiposarcoma, MyxoidRNA-Binding Protein FUSRetroperitoneal NeoplasmsNeoplasms, Adipose TissueLipomaSoft Tissue NeoplasmsTranscription Factor CHOPMuscle NeoplasmsSpermatic CordGenital Neoplasms, MaleSarcomaChromosomes, Human, Pair 12MesocolonDioxolesCell DedifferentiationMediastinal NeoplasmsTetrahydroisoquinolinesLeiomyosarcomaProto-Oncogene Proteins c-mdm2Histiocytoma, Malignant FibrousHistiocytoma, Benign Fibrous