Cervical Cancer: Risk Factors
Most cases of cervical cancer are found in women younger than 50. It rarely develops in women younger than 20. Many older women do not realize that the risk of developing cervical cancer is still present as they age. About 20% of cervical cancers are found in women older than 65. These cancers, however, rarely occur in women who have been getting regular tests for cervical cancer before they were 65. Even in 21st century, cervical cancer remains in one among the top affecting Indian women.
Most cervical cancers begin in the cells in the transformation zone i.e. endo and ecto cervix. These cells do not suddenly change into cancer. Instead, the normal cells of the cervix first gradually develop pre-cancerous changes that turn into cancer. Doctors use several terms to describe these pre-cancerous changes, including cervical intraepithelial neoplasia (CIN), squamous intraepithelial lesion (SIL), and dysplasia. These changes can be detected by the Pap test and treated to prevent cancer from developing.
Types of cervical cancer:
Cervical cancers and cervical pre-cancers are classified by how they look under a microscope. The main types of cervical cancers are squamous cell carcinoma and adenocarcinoma.
Most (up to 9 out of 10) cervical cancers are squamous cell carcinomas. These cancers develop from cells in the ectocervix and the cancer cells have features of squamous cells under the microscope. Squamous cell carcinomas most often begin in the transformation zone (where the ectocervix joins the endocervix). •