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Bone metastasis, or osseous metastatic disease, is a category of cancer metastases that result from primary tumor invasions into bones. Bone-originating primary tumors such as osteosarcoma , chondrosarcoma , and Ewing sarcoma are rare; the most common bone tumor is a metastasis. [ 1 ]
It is better to have fewer metastases than longer time to metastases. Those with a longer length of time (more than 24 months) and few nodules (two or fewer) have the best prognosis, with a two-year survival after the metastases of 50%, five-year of 40%, and 10-year of 20%. If metastases are both local and regional, the prognosis is worse.
Life expectancy in type IV OI is thought to be close to normal, but in type III it is lower than in the general population. [48] A 2016 study of data in Denmark's National Patient Register found that across all types of OI, all-cause mortality was three times higher, leading to a loss of around seven years in females and nine years in males. [15]
Invasion of bone by cancer is the most common source of cancer pain. It is usually felt as tenderness, with constant background pain and instances of spontaneous or movement-related exacerbation, and is frequently described as severe. [17] [18] Rib fractures are common in breast, prostate and other cancers with rib metastases. [19]
Brain metastases. Brain metastases occur in up to 10–15% of breast-cancer patients, and often (but not always) occur late in the disease. They require urgent treatment; brain metastases may progress rapidly, and can suddenly produce life-threatening complications such as increased intracranial pressure, herniation of the brain, and seizures.
Metastasis is a pathogenic agent's spreading from an initial or primary site to a different or secondary site within the host's body; [1] the term is typically used when referring to metastasis by a cancerous tumor. [2] The newly pathological sites, then, are metastases (mets).