Is the Squamocolumnar junction the transformation zone?

Is the Squamocolumnar junction the transformation zone?

Transformation zone It corresponds to the area of cervix bound by the original squamocolumnar junction at the distal end and proximally by the furthest extent that squamous metaplasia has occurred as defined by the new squamocolumnar junction (Figures 1.7, 1.13 and 1.14).

What is a Type 1 transformation zone?

Diagrammatic representations of types of transformation zone (TZ). (a) Type 1 TZ, which is completely ectocervical, is fully visible, and may be small or large. (b) Type 2 TZ, which has an endocervical component but is still fully visible; the ectocervical component may be small or large.

What does squamous metaplasia on a Pap smear mean?

The phrase “endocervical cells present” simply means that your doctor sampled cells from the inside of your cervix during the Pap smear. The phrase “squamous metaplastic cells present” means that the pathologist who examined your Pap smear found cells that were growing and repairing themselves regularly.

What will my cervical biopsy show?

A cervical biopsy may be done to find cancer or precancer cells on the cervix. Cells that appear to be abnormal, but are not yet cancerous, are called precancerous. These abnormal cells may be the first sign of cancer that may develop years later.

Why is Squamocolumnar Junction important?

The cervical and gastroesophageal squamocolumnar junctions contain residual embryonic cells that are implicated in transition-zone-specific carcinomas and precursor lesions (ie squamous cell carcinoma/high grade squamous intraepithelial lesion in the cervix and esophageal carcinoma/Barrett’s esophagus at the …

What is a Type 3 transformation zone?

Type 3 transformation zone (TZ) of the cervix poses a challenge in cervical cancer screening with visual techniques because of the potential for missing important precancerous lesions which can progress into invasive cervical cancer (ICC) prior to detection.

What is a Type 2 cervix?

Listen to pronunciation. Moderately abnormal cells are found on the surface of the cervix. CIN 2 is usually caused by certain types of human papillomavirus (HPV) and is found when a cervical biopsy is done. CIN 2 is not cancer, but may become cancer and spread to nearby normal tissue if not treated.

What is Squamocolumnar junctional mucosa?

A demarcation line, the squamocolumnar (SC) junction or “Z-line”, represents the normal esophagogastric junction where the squamous mucosa of the esophagus and columnar mucosa of the stomach meet (Figure 2).

How do you identify Squamocolumnar Junction?

The squamocolumnar junction may be prominently visible as a sharp, steplike white line due to the presence of actively dividing immature squamous metaplasia around the edge, medial (proximal) to the junction (Figure 6.5).

What is cin1 cin2 CIN3?

CIN 1: Refers to abnormal cells affecting about one-third of the thickness of the epithelium. CIN 2: Refers to abnormal cells affecting about one-third to two-thirds of the epithelium. CIN 3: Refers to abnormal cells affecting more than two-thirds of the epithelium.

Can you get pregnant on CIN 2?

The results suggest that treatment for CIN does not adversely affect the chances of a successful conception, although treatment is associated with an increased risk of miscarriage in the second trimester.