The signs of soft tissue sarcoma vary from child to child and disease to disease. The location of the soft tissue sarcoma can make a difference in the symptoms.
Usually, the first symptom of a soft tissue sarcoma is a painless mass or lump. It may be in an arm or leg or the trunk of the body.
As the sarcoma grows, it will press on adjacent parts of the body, such as nerves, muscles, blood vessels and organs. When this happens, other symptoms may appear, such as muscle weakness or pain.
Soft tissue sarcomas are rare. If your child has these symptoms, they probably are caused by a less serious condition. However, it is a good idea to talk to your doctor to rule out other health problems.