Other Soft Tissue Sarcoma There are many types of sarcomas, and any single one occurs very rarely. Treatment varies from one patient to the next and can vary from simple surgical excision alone to extensive surgery and aggressive chemotherapy, with and without radiation. In general, staging and treatment are asimilar to rhabdomyosarcoma. Treatment can be somewhat less aggressive for small, completely excised tumors. Type Most Common Location Fibrosarcomas Congenital Extremity and trunk Adult form Thigh and knee Nuerofibrosarcoma Extremity, back of abdomen, trunk Synovial sarcoma Around but not in joints Hemangiopericytoma Head, neck, back of abdomen Malignant fibrous histiocytoma Extremity Liposarcoma Extremity, back of abdomen