Cancer is a disease in which certain body cells don't function right, divide very fast, and produce too much tissue that forms a tumor. Cervical cancer is cancer in the cervix, the lower, narrow part of the uterus (womb). The uterus is the hollow, pear-shaped organ where a baby grows during a woman's pregnancy. The cervix forms a canal that opens into the vagina (birth canal), which leads to the outside of the body.

If the Pap test finds serious changes in the cells of the cervix, the doctor will suggest more powerful tests such as a coloscopy. In this procedure, the doctor uses a tool called a colposcope to see the cells of the vagina and cervix in detail.  See our article on Human Papillomavirus (HPV) and genital warts.