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
Dr. Joel Policzer checks on his patient, Lillian Landry, in the hospice wing of an Florida hospital in 2009. A new study found that many terminally ill cancer patients don't fully understand their prognosis.
J. Pat Carter/AP
Back in 1998, Colleen Maxwell, then a 23-year-old student, smoked outside a San Diego bar, just weeks after California became the the first state in the nation to to ban smoking in most bars and gambling casinos.
Joan C Fahrenthold/AP