![](https://webarchive.library.unt.edu/eot2008/20081103084733im_/http://www.cancer.gov/images/spacer.gif) |
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(in-VAY-siv brest KAN-ser)
![](https://webarchive.library.unt.edu/eot2008/20081103084733im_/http://www.cancer.gov/images/spacer.gif)
| Cancer that has spread from where it started in the breast into surrounding, healthy tissue. Most invasive breast cancers start in the ducts (tubes that carry milk from the lobules to the nipple). Invasive breast cancer can spread to other parts of the body through the blood and lymph systems. Also called infiltrating breast cancer. |
Previous Definitions: | intravenous pyelogram, intravenous pyelography, intraventricular infusion, intravesical, intrusive thought | Next Definitions: | invasive cancer, invasive cervical cancer, invasive hydatidiform mole, invasive procedure, inverted papilloma |
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![](https://webarchive.library.unt.edu/eot2008/20081103084733im_/http://www.cancer.gov/images/spacer.gif) |