Cervical cancer is the only cancer with a single-known cause – the human papillomavirus (HPV).
And now there is a test to detect it: the HPV test. The Pap alone is not foolproof – it can miss up to half the time! But, when combined with the Pap, the HPV test is virtually 100% accurate in identifying women at risk for cervical cancer, so they can be monitored and treated well before cancer has a chance to develop.
http://www.youtube.com/watch?v=624S8eU_95U
http://www.thehpvtest.com/