Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumours, which do not spread to other parts of the body. While these symptoms may indicate cancer, they may have other causes. There are over 100 types of cancers affect humans.
A bone tumour is a neoplastic growth of tissue in bone. Abnormal growths found in the bone can be either benign (noncancerous) or malignant(cancerous).