Sarcoma 4 Soft Tissue Neoplasms 2 Biomarkers, Tumor 1 Diagnosis 1 Dissertations 1 Dissertations, Academic 1 Head 1 Head -- 1 Head and Neck Neoplasms -- 1 Immunology 1 Murine sarcoma viruses 1 Muscle Development 1 Neck 1 Neck -- 1 Research 1 Retrospective Studies 1 Sarcoma -- 1 Sarcoma, Synovial 1 Soft tissue tumors 1 T-Lymphocytes, Regulatory 1 Tissues 1 Tumors -- 1 pathology 1 surgery 1