When cells divide abnormally and uncontrollably, they can form a mass or lump of tissue. This lump is called a tumor. Bone tumors form in your bones. As the tumor grows, abnormal tissue can displace healthy tissue. Some tumors are benign, meaning they are not cancerous. While benign bone tumors won’t spread to other parts of the body and are unlikely to cause death, they can still be dangerous and may require treatment. Benign tumors can grow and could compress your healthy bone tissue. Other tumors are malignant, meaning they are cancerous. Malignant bone tumors can cause cancer to spread throughout the body.
A dull ache in the affected bone is the most common symptom of bone cancer. The pain starts off as occasional and then becomes severe and constant. The pain may be severe enough to wake you up in the night. Sometimes, when people have an undiscovered bone tumor, what seems like an insignificant injury breaks the already-weakened bone, leading to severe pain. This is known as apathologic fracture. Sometimes there may be swelling at the site of the tumor. Tumors can cause night sweats or fevers. Or you might not have any pain, but will notice a new mass of tissue on some part of your body. People with benign tumors might not have any symptoms, and the tumor might not be detected until an imaging scan reveals it while receiving other medical testing. A benign bone tumor may not require treatment unless it starts to interfere with function and movement.
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