What Is It?
The cervix is a small, donut-shaped structure. It is located at the top of the vagina. It is the entrance to the uterus.
Cervical cancer begins in the outer layer of the cervix. This outer layer is called the cervical epithelium. Tiny changes begin in epithelial cells. Over time, cells may become cancerous and grow out of control.
Cervical cancer usually grows slowly. It can remain in the cervical covering for up to 10 years. Once cervical cancer moves beyond this layer, it invades nearby tissue. This includes the uterus, vagina, bladder, and rectum.