What is the cervical transformation zone?
The transformation zone is an area of changing cells, and it is the most common place on the cervix for abnormal cells to develop. These abnormal cells can be detected on a Pap smear. The location of the transformation zone varies among women.
What is transformation zone in colposcopy?
Transformation zone (TZ) The TZ is that area of epithelium that lies between the native and unaffected columnar epithelium of the endocervical canal and the native squamous epithelium deriving from the vaginal and ectocervical squamous epithelium (Fig.
Why is the transformation zone vulnerable to cervical cancer?
1). The TZ contains metaplastic squamous cells derived from stem cells (reserve cells) of the endocervix. Although the majority of cervical cancers originate from the TZ, it is unclear why this region is most susceptible to malignant conversion.
What happens if transformation zone absent on pap?
If the components of the transformation zone are absent in a satisfactory Pap test, you may not need to repeat the Pap test if the individual has had routine Negative Pap tests. The decision to repeat the Pap test is based on the cytology diagnosis and not the presence or absence of transformation zone cells.”
Is transformation zone normal?
The transformation zone may be described as normal when it is composed of immature and/or mature squamous metaplasia along with intervening areas or islands of columnar epithelium, with no signs of cervical carcinogenesis (1.14a).
What does transformation zone present mean in a Pap smear?
Transformation zone component present. Another phrase that means your pap sampled cells both on the surface of your cervix and inside the canal.
What does transformation zone mean?
What does no transformation zone mean?
Transformation zone component absent. Like with “endocervical cells absent,” your pap didn’t pick up cells at the transition of the outside to the inside of your cervix. Nothing to worry about. Negative for intraepithelial lesion or malignancy. This is the complicated way of saying everything’s fine!