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Transformation Zone

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Updated June 27, 2014

Definition: a specific area of the cervix where almost all precancerous and cancerous changes occur. This is the area of the cervix in which Pap smear and biopsy samples are taken.

The transformation zone is commonly called the "TZ" by doctors and on medical charts. Its location on the cervix varies from woman to woman.
Also Known As: "TZ", transition zone

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