When a malignant tumor spreads to sites distant from the primary tumor, the process is known as?

At the point when a harmful tumor spreads to locales inaccessible from the essential tumor its called metastasis.  

Explanation:

When disease spreads, it tends to be difficult to control. Albeit a few kinds of metastatic malignancy can be relieved with current medicines, generally can't. All things considered, there are medicines for all patients with metastatic tumor. The objective of these medications is to stop or moderate the development of the tumor or to ease manifestations caused by it.For case, 56 percent, or somewhat more than half, of individuals determined to have beginning period lung disease live for somewhere around five years after finding. The five-year survival rate for individuals determined to have late-organize lung tumor that has spread (metastasized) to different zones of the body is 5 percent.