![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/spacer.gif) |
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![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/spacer.gif)
![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/spacer.gif)
| Células anormales limitadas a los conductos o los lobulillos de la mama. Hay dos formas, el carcinoma ductal in situ (DCIS, por sus siglas en inglés) y el carcinoma lobular in situ (LCIS, por sus siglas en inglés). |
![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/spacer.gif)
![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/gray_spacer.gif)
![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/spacer.gif)
Definiciones anteriores: | carcinoma del ano in situ, estadio 0, carcinoma del conducto de Bellini, carcinoma del esófago in situ, estadio 0, carcinoma del labio y la cavidad oral in situ, estadio 0, carcinoma del páncreas in situ, estadio 0 | Definiciones siguientes: | carcinoma del seno (mama) in situ, estadio 0, carcinoma del seno maxilar in situ, estadio 0, carcinoma ductal, carcinoma ductal in situ, carcinoma ductal infiltrante |
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![](https://webarchive.library.unt.edu/eot2008/20081029002728im_/http://www.cancer.gov/images/spacer.gif) |