Soft tissue sarcomas are a type of cancer that develops in the soft tissues of the body, such as muscles, fat, blood vessels, nerves, tendons, and joint linings. These tumors can be either benign (noncancerous) or malignant (cancerous). Malignant soft tissue sarcomas are more common than benign ones, and they can grow and spread quickly, making them more dangerous.
Most soft tissue sarcomas are malignant, meaning they are cancerous and can spread to other parts of the body. These sarcomas can be aggressive and difficult to treat if they are not caught early. Treatment usually involves surgery to remove the tumor, along with radiation and/or chemotherapy.
However, not all soft tissue sarcomas are malignant. Some are benign, meaning they are noncancerous and do not spread. Benign soft tissue sarcomas can usually be treated with surgery alone, but in some cases radiation and/or chemotherapy may be recommended as well.
In conclusion, while most soft tissue sarcomas are malignant, some are benign. The type of sarcoma and its aggressiveness will determine the best course of treatment.