Sarcoma is a type of cancer that develops in tissues or bones. There are more than 70 subtypes of sarcoma cancers, with bone and soft tissue sarcomas being the main two types. Soft tissue sarcomas develop in soft tissues like fat, muscle, nerves, fibrous tissues, blood vessels, or deep skin tissues. Sarcoma Risk Factors There are a couple of known risk factors that may contribute to someone developing sarcoma: It is possible for patients to develop sarcomas from radiation given to treat other cancers, s...