The soft tissues of the body include the muscles, tendons (bands of fiber that connect muscles to bones), fat, blood vessels, lymph vessels, nerves, and tissues around joints. Adult soft tissue sarcomas can form almost anywhere in the body, but are most common in the head, neck, arms, legs, trunk, and abdomen.
There are many types of soft tissue sarcoma. The cells of each type of sarcoma look different under a microscope, based on the type of soft tissue in which the cancer began....

Definition of soft tissue sarcoma:
A cancer that begins in the muscle, fat, fibrous tissue, blood vessels, or other supporting tissue of the body.
Treatment
Information about treatment, including surgery, chemotherapy, radiation therapy, immunotherapy, and vaccine therapy....