![](https://webarchive.library.unt.edu/eot2008/20090514060014im_/http://www.cancer.gov/images/spacer.gif) |
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![](https://webarchive.library.unt.edu/eot2008/20090514060014im_/http://www.cancer.gov/images/spacer.gif)
| Intense increases in pain that occur with rapid onset even when pain-control medication is being used. Breakthrough pain can occur spontaneously or in relation to a specific activity. |
Previous Definitions: | brain stem tumor, brain tumor, Brassica vegetable, BRCA1, BRCA2 | Next Definitions: | breast, breast cancer, breast carcinoma in situ, breast density, breast duct |
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