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Carcinoma in situ
Pronunciation
Definition 1
A group of abnormal cells that remain in the place where they first formed. They have not spread. These abnormal cells may become cancer and spread into nearby normal tissue. Also called stage 0 disease. (NCI Dictionary)
Definition 2
A malignant epithelial neoplasm which is confined to the epithelial layer without evidence of further tissue invasion. (NCI Thesaurus)
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