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What are rare bone tumors?

Rare bone tumors include bone cancer and cartilage cancer. They can be called by different names depending on where they are in the body. For example, a chordoma tumor that forms at the skull base might be called a clival tumor, and one that forms near the tailbone might be called a sacral tumor. 

Some of the rare bone tumors that affect children, adolescents, and young adults are:

Bone tumors can form in different parts of the skeleton (left). Bone tumors that form in the spine, which is part of the skeleton, are named after the area of the spine where they grow.

Credit: National Cancer Institute