Soft tissue sarcomas
Possible signs of adult soft tissue sarcoma include a lump or swelling in soft tissue of the body.
A sarcoma may appear as a painless lump under the skin, often on an arm or a leg. Sarcomas that begin in the abdomen may not cause symptoms
until they become very large. As the sarcoma grows larger and presses on nearby organs, nerves, muscles, or blood vessels, symptoms may include:
- Trouble breathing
Source: National Cancer Institute - General Information About Adult Soft Tissue Sarcoma.
Osteosarcoma and malignant fibrohistocytoma(MFH)Possible signs of osteosarcoma and MFH include pain and swelling over a bone or a bony part of the body.
These and other symptoms may be caused by osteosarcoma or MFH. Other conditions may cause the same symptoms. A doctor should be consulted if
any of the following problems occur:
- Swelling over a bone or bony part of the body.
- Pain in a bone or joint.
- A bone that breaks for no known reason.
Source: National Cancer Institute - General Information About Osteosarcoma and Malignant Fibrous Histiocytoma of Bone