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Dictionary of Cancer Terms
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carcinoma in situ (KAR-sih-NOH-muh in SY-too)

 A group of abnormal cells that remain in the tissue in which they first formed. These abnormal cells may become cancer and spread into nearby normal tissue.

Previous Definitions:carcinogen, carcinogenesis, carcinoid, carcinoid syndrome, carcinoma
Next Definitions:carcinoma of unknown primary, carcinomatosis, carcinomatous meningitis, carcinosarcoma, carcinosis