Soft tissue sarcomas are cancers that start in the soft tissues of the body. This illustration shows a soft tissue sarcoma of the thigh muscle just above the knee.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Make a gift to our 2025 Drive to Cure Cancer and transform the way cancer is treated and defeated.