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Cervical Cancer Prevention

General Information About Cervical Cancer

Cervical cancer is a disease in which malignant (cancer) cells form in the cervix.

The cervix is the lower, narrow end of the uterus (the hollow, pear-shaped organ where a fetus grows). The cervix connects the uterus to the vagina (birth canal).


Anatomy of the female reproductive system. The organs in the female reproductive system include the uterus, ovaries, fallopian tubes, cervix, and vagina. The uterus has a muscular outer layer called the myometrium and an inner lining called the endometrium.
Anatomy of the female reproductive system. The organs in the female reproductive system include the uterus, ovaries, fallopian tubes, cervix, and vagina. The uterus has a muscular outer layer called the myometrium and an inner lining called the endometrium.

Cervical cancer usually develops slowly over time. Before cancer appears in the cervix, the cells of the cervix go through a series of changes in which cells that are not normal begin to appear in the cervical tissue. When cells change from being normal cells to abnormal cells, it is called dysplasia. Depending on the number of abnormal cells, dysplasia may go away without treatment. The more abnormal cells there are, the less likely they are to go away. Dysplasia that is not treated may turn into cancer, over time. The cancer cells grow and spread through the cervix. It can take many years for dysplasia to turn into cancer.

See the following PDQ summaries for more information about cervical cancer:

Screening for cervical cancer using the Pap test has decreased the number of deaths from cervical cancer.

The number of deaths from cervical cancer has decreased since widespread screening with the Pap test (Pap smear) began.