What Is Cervical Cancer?

Cervical cancer is cancer that starts in the cells of the cervix. The cervix is the lower, narrow end of the uterus (womb). The cervix connects the uterus to the vagina (birth canal). Cervical cancer usually develops slowly over time. Before cancer appears in the cervix, the cells of the cervix go through changes known as dysplasia, in which abnormal cells begin to appear in the cervical tissue. Over time, if not destroyed or removed, the abnormal cells may become cancer cells and start to grow and spread more deeply into the cervix and to surrounding areas.

Anatomy of the female reproductive system; drawing shows the uterus, myometrium (muscular outer layer of the uterus), endometrium (inner lining of the uterus), ovaries, fallopian tubes, cervix, and vagina.

The cervix has two main parts:

The squamocolumnar junction (also called the transformation zone) is the border where the endocervix and ectocervix meet. Most cervical cancers begin in this area.

Drawing of the anatomy of the cervix showing the internal OS, endocervical canal, endocervix, ectocervix, and external OS. The uterus and vagina are also shown. There is also a pullout that shows a close up of the squamocolumnar junction (the area where the endocervix and ectocervix meet) and the cells that line the endocervix and ectocervix.

Types of cervical cancer

Cervical cancers are named after the type of cell where the cancer started. The two main types are:

Sometimes, cervical cancer has features of both squamous cell carcinoma and adenocarcinoma. This is called mixed carcinoma or adenosquamous carcinoma. Very rarely, cancer develops in other cells in the cervix.

Learn more about cervical cancer

Many cervical cancer symptoms are also seen with other, less serious conditions. These are the warning signs you shouldn’t ignore.

Long-lasting HPV infection causes almost all cervical cancers. Learn about HPV infection and other risk factors for cervical cancer and what you can do to lower your risk.

If you have a cervix, screening for cervical cancer is an important part of routine health care. Learn when to get screened and what to expect during and after screening.

Learn what HPV and Pap test results mean and next steps if a test result is abnormal.

Learn about the tests that are used to diagnose and stage cervical cancer.

Learn about cervical cancer survival rates and why this statistic doesn't predict exactly what will happen to you.

Stage refers to the extent of your cancer, such as how large the tumor is and if it has spread. Learn about cervical cancer stages, an important factor in deciding your treatment plan.

Learn about the different ways cervical cancer can be treated.

Cervical cancer and vaginal cancer are very rare in children. Learn about the signs and symptoms, diagnosis, and treatment options.

Certain aspects of cervical cancer diagnosis and treatment are of special concern. Gain a greater sense of control by knowing what to expect and what resources are available to help you cope.

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