Bone and soft tissue sarcomas are cancerous regions that begin in any part of the body. Representing about 15 percent of all pediatric cancers, about 60 percent of sarcomas begin in an arm or leg, 30 percent in the abdomen and 10 in the head or neck.
Symptoms of sarcoma often do not appear in the early stages of the cancer. Typical symptoms include:
Pain if a tumor presses on nerves or muscles
A noticeable lump or swelling
A blockage in the stomach or intestines or gastrointestinal bleeding (if tumor is in abdomen/digestive tract)