Question

what is metastatic tissue

Answer 1

Metastasis is a pathogenic agent's spread from an initial or primary site to a different or secondary site within the host's body;[1] it is typically spoken of as such spread by a cancerous tumor.[2] The newly pathological sites, then, are metastases (mets).[3][4] It is generally distinguished from cancer invasion, which is the direct extension and penetration by cancer cells into neighboring tissues.[5]


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Answer 2

Metastasis is the medical term for cancer that spreads to a different part of the body from where it started. When this happens, doctors say the cancer has “metastasized.” Other names for metastasis are “metastatic cancer” and “stage 4 cancer.” Sometimes the term “advanced cancer” also describes metastatic disease, but this isn’t always true. For instance, “locally advanced” cancer is not the same as metastatic cancer. It describes cancer that has spread to nearby tissues or lymph nodes but not throughout the body.