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Metastasis is a pathogenic agent’s spread from an initial or primary site to a different or secondary site within the host’s body it is typically spoken of as such spread by a cancerous tumor. The newly pathological sites, then, are metastases mets . It is generally distinguished from cancer invasion, which is the direct extension and penetration by cancer cells into neighboring tissues..
A brain metastasis is a cancer that has metastasized spread to the brain from another location in the body and is therefore considered a secondary brain tumor. The metastasis typically shares a cancer cell type with the original site of the cancer. Metastasis is the most common cause of brain cancer, with primary tumors that originate in the brain being less common..
La met stasis del griego mudarse de lugar o transferencia , es el proceso de propagaci n de un foco canceroso a un rgano distinto de aquel en que se inici . Ocurre generalmente por v a sangu nea o linf tica.Aproximadamente el de las muertes por c nceres no detectados, se deben a la metastatizaci n de estos..