Fibrosarcoma is what the common people call a terminal disease. Malignant tumors are clinically classified into many types, and those of epithelial tissue origin are called carcinomas, which are widely known to the common people as a terminal disease. In addition to malignant tumors of epithelial origin, there are others, such as those of mesenchymal tissue origin called sarcomas, which are far more malignant than cancer. Malignant tumors of lymphohematopoietic tissue origin, there are also leukemias, malignant lymphomas, and so on. In addition to these, there are others such as malignant melanoma, which are much more malignant. Fibrosarcoma is insensitive to radiation and chemotherapy, and the mainstay of treatment is through surgery, which involves extended resection, but the surgical results are often unsatisfactory, and it is very prone to recurrence and distant metastasis.