CIN 2/3

Definition / meaning of CIN 2/3

A condition in which abnormal cells grow on the thin layer of tissue that covers the cervix (the lower, narrow end of the uterus). These abnormal cells are not malignant (cancer) but may become cancer. CIN 2/3 has features of CIN 2 and CIN 3. Also called cervical intraepithelial neoplasia grade 2/3.

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The Web site of the National Cancer Institute (

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