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Transformation Zone

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Updated May 02, 2007

Definition: The transformation zone, also known as "TZ," is the area of the cervix where abnormal cells and dysplasia occur. During Pap smears and cervical biopsies, doctors take samples from the transformation zone. The location of the transformation zone on the cervix varies from woman to woman.
Pronunciation: trans-for-may-shun zO-nuh
Also Known As: TZ or transition zone
Examples:
Cervical dysplasia most commonly occurs at the transformation zone of the cervix.
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