"Now the hard work begins, " said Hopkins oncologist Dr. Luis Diaz, whose team is collecting hundreds of additional Pap samples for more study and is exploring ways to enhance the detection of ovarian cancer.

NPR: Retooling Pap Test To Spot More Kinds Of Cancer

"What this study explores and similar studies are exploring is whether there are potentially infectious causes that result in prostate cancer going from a relatively dormant disease to one that's clinically significant, " says Albertsen.

CNN: Prostate cancer linked to sexually transmitted disease