![](https://webarchive.library.unt.edu/eot2008/20090514042122im_/http://www.cancer.gov/images/spacer.gif) |
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![](https://webarchive.library.unt.edu/eot2008/20090514042122im_/http://www.cancer.gov/images/spacer.gif)
| An abnormal collection of fluid inside the sac that covers the heart. |
Previous Definitions: | percutaneous transhepatic cholangiography, performance status, perfusion, perfusion magnetic resonance imaging, periampullary cancer | Next Definitions: | perifosine, perillyl alcohol, perimenopausal, perineal colostomy, perineal prostatectomy |
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![](https://webarchive.library.unt.edu/eot2008/20090514042122im_/http://www.cancer.gov/images/spacer.gif) |