How is an early cancer detected?

Regular Screening . Early cancers can be detected by timely screening per recommended guidelines. Screening programs have the potential to detect early cancers and impact survival for patients. Standard screening- mammograms for breast cancer, pap smears for cervical cancer, colonoscopy for colorectal cancers, psa & rectal exam for prostate need to be implemented through your doctors.
Screening. Which cancer? Ovarian - no good screening technique (screening, not for symptoms...) lung - ct colon - colonoscopy prostate - psa, dre - some controversy brca - mammogram standard validated screening guidelines as from nccn, acs, uspstf, etc...