![](https://webarchive.library.unt.edu/eot2008/20090514025814im_/http://www.cancer.gov/images/spacer.gif) |
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![](https://webarchive.library.unt.edu/eot2008/20090514025814im_/http://www.cancer.gov/images/spacer.gif)
| The most common type of invasive breast cancer. It starts in the cells that line the milk ducts in the breast, grows outside the ducts, and often spreads to the lymph nodes. |
Previous Definitions: | inferior vena cava, infertile, infertility, infiltrating breast cancer, infiltrating cancer | Next Definitions: | inflammation, inflammatory, inflammatory bowel disease, inflammatory breast cancer, infliximab |
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![](https://webarchive.library.unt.edu/eot2008/20090514025814im_/http://www.cancer.gov/images/spacer.gif) |