Cervical cancer is cancer that starts in the cervix, which is the small opening into the uterus from the vagina. Human papillomavirus (HPV) causes 99% of cervical cancers. There are many types of HPV, and they are categorized by low-risk and high-risk HPV. High-risk HPV types may cause normal cervical cells to turn into abnormal cervical cells. Overtime, these abnormal cervical cells may develop into cervical cancer. There may be no symptoms of cervical cancer at first but pelvic pain and bleeding from the vagina may happen later in more advanced stages of cervical cancer. Screening for precancerous and cancerous cervical cells is done through a Pap test, which is used to examine cells from the cervix under a microscope. Treatment may include surgery, radiation therapy, chemotherapy, or a combination.