![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif) |
¿Preguntas sobre el cáncer?
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif)
|
1-800-422-6237
(1-800-4-CANCER)
|
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif)
|
Llame de lunes a viernes de 9:00 a.m. a 4:30 p.m., hora local en Estados Unidos y sus territorios. |
|
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif) |
|
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif)
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif)
| Se encuentran células anormales en el revestimiento más interno del seno maxilar. Estas células anormales se pueden volver cancerosas y diseminarse hasta el tejido normal cercano. |
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif)
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/gray_spacer.gif)
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif)
Definiciones anteriores: | 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, carcinoma del seno (mama) in situ, carcinoma del seno (mama) in situ, estadio 0 | Definiciones siguientes: | carcinoma ductal, carcinoma ductal in situ, carcinoma ductal infiltrante, carcinoma epidermoide, carcinoma epitelial |
|
![](https://webarchive.library.unt.edu/eot2008/20081011224549im_/http://www.nci.nih.gov/images/spacer.gif) |