Cervical cancer is a type of cancer that develops in a woman's cervix. It is caused by persistent infection with human papillomavirus (HPV). Regular Pap tests can detect cervical cancer early when it is most treatable. There are several stages of cervical cancer from carcinoma in situ (stage 0) through stage IV cancer that has spread to other parts of the body. While the survival rate is 68% on average, it is 91% when detected early. Prevention through HPV vaccination and regular screening can help reduce the risk of developing cervical cancer.