Dr. George Papanicolaou discovered that it was possible to detect cancer by inspecting cervical cells. The Pap smear, the cervical cancer screening test, is named after him.
American Cancer Society/AP
Catharine Becker of Fullerton, Calif., was diagnosed with stage 3 breast cancer at 43 despite having a clean mammogram. The mother of three didn't know she had dense breast tissue until after she was diagnosed.
Heidi de Marco/Kaiser Health News
This spiral CT image of the chest shows a large malignant mass (purple) in one lung. A conventional chest X-ray could have missed this tumor, radiologists say.
Medical Body Scans/Science Source
Many people think that colon cancer screening is no walk in the park. This giant inflatable colon on display at the University of Miami Health System campus was intended to help them think otherwise.