How many cancer(s) of the bone are there?

Bone cancer
is caused by a problem with the cells that make bone. More than 2,000 people are
diagnosed in the United States each year with a bone tumor. Bone tumors occur most
commonly in children and adolescents and are less common in older
adults.

There are many
different types of bone cancers. Bone cancer occurs when there is an abnormality in the
cells that make bone. Bone tumors are found more frequently in children than adults.
When an adult has a bone tumor it is usually from another tumor that has spread to the
bone.

Osteosarcoma is the most common type of bone cancer.
It primarily affects males and is an aggressive cancer. Ewing's Sarcoma is very
aggressive and also occurs primarily in males 15 years of age and younger.
Chondrosarcoma is also a common type of bone cancer than can be aggressive or slow
growing and occurs most commonly in people over the age of 40. Other types of bone
cancers include chordoma, fibrosarcoma, and malignant fibrous
histiocytoma.