- Circulating Tumor Cell
Circulating tumor cells (CTCs) are cells that have detached from a primary tumor and circulate in the
bloodstream. CTCs may constitute "seeds" for subsequent growth of additional tumors ( metastasis) in different tissues.
The detection of CTCs may have important prognostic and therapeutic implications but because their numbers can be very small, these cells are not easily detected [cite journal |author=Ghossein RA, Bhattacharya S, Rosai J |title=Molecular detection of micrometastases and circulating tumor cells in solid tumors |journal=Clin. Cancer Res. |volume=5 |issue=8 |pages=1950–60 |year=1999 |pmid=10473071 |doi=] .
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