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(... EK-struh-heh-PA-tik bile dukt KAR-sih-NOH-muh in SY-too)
![](https://webarchive.library.unt.edu/eot2008/20090514064706im_/http://www.cancer.gov/images/spacer.gif)
| Abnormal cells are found in the innermost layer of tissue lining the extrahepatic bile duct. These abnormal cells may become cancer and spread into nearby normal tissue. |
Previous Definitions: | stage 0 cervical carcinoma in situ, stage 0 chronic lymphocytic leukemia, stage 0 colorectal carcinoma in situ, stage 0 disease, stage 0 esophageal carcinoma in situ | Next Definitions: | stage 0 gallbladder carcinoma in situ, stage 0 gastric carcinoma in situ, stage 0 hypopharyngeal carcinoma in situ, stage 0 laryngeal carcinoma in situ, stage 0 lip and oral cavity carcinoma in situ |
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