Cervical cancer is a type of cancer that occurs in the cells of the cervix the lower part of the uterus that connects to the vagina. Various strains of the human papillomavirus (HPV), a sexually transmitted infection, play a role in causing most cervical cancer. When exposed to HPV, the body's immune system typically prevents the virus from doing harm. In a small percentage of people, however, the virus survives for years, contributing to the process that causes some cervical cells to become cancer cells. You can reduce your risk of developing cervical cancer by having screening tests and receiving a vaccine that protects against HPV infection. Early-stage cervical cancer generally produces no signs or symptoms. Cervical cancer begins when healthy cells in the cervix develop changes (mutations) in their DNA. A cell's DNA contains the instructions that tell a cell what to do.
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