Metastatic cancer

metastatic,cancer,

is the spread, of a disease,

from, one, organ, to another, non-adjacent, organ,

It was previously, thought, that only, malignant, tumor

cells,and infections, have the capacity, to metastasize,

however, this is being, reconsidered,due to new research,

The word, metastasis, means, "displacement", in Greek,

from meta, "next", and , stasis, "placement",

The plural, is metastases,

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Cancer occures after single cell

Cancer, occurs, after, a single, cell,

in a tissue,is progressively, genetically, damaged,

to produce, a cancer, stem cell, possessing, a malignant,

phenotype,

These, cancer, stem, cells,are able, to undergo, uncontrolled,

abnormal, mitosis, which serves, to increase, the total,

number, of cancer, cells, at that, location,

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cancer cells

When, the area, of cancer, cells,

at the originating, site,

become, clinically, detectable,it is called, primary, tumor,

Some cancer, cells, also, acquire, the ability, to penetrate,

and infiltrate,surrounding, normal, tissues,

in the local, area, forming, a new, tumor,

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Newly formed tumor

The newly, formed,new,tumor,

in the adjacent, site,

within, the tissue, is called, a local, metastasis,

Some cancer, cells, acquire, the ability,

to penetrate, the walls, of lymphatic, and/or blood, vessels,

after which,they are able, to circulate,

through, the bloodstream, (circulating, tumor, cells),

to other sites, and tissues, in the body,

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Secondary Tumor

After, the tumor, cells, come,to rest, at another site,

they re-penetrate, through, the vessel, or walls,

continue, to multiply,

and eventually, another clinically, detectable, tumor,

is formed,

This new, tumor, is known, as, a metastatic,

(or secondary), tumor,