Sara Monopoli felt severe back pain towards the end of her pregnancy. Kevin Brumett thought he'd pulled a calf muscle. In fact, both had lung cancer, a deadly disease that is hard to detect, almost always fatal and kills more Americans than colorectal, breast, pancreatic and prostate cancer combined. Tonight, Heather Unruh reports the alarming facts about this silent killer, one that's affected her own family, and one that increasingly claims the young and non-smokers.

Segment One: Lung Cancer

Segment Two: Lung Cancer

Segment Three: Lung Cancer

Segment Four: Lung Cancer

Show Resources:

Mass. General Cancer Center

Molecular Fingerprinting at MGH

Lung Cancer Alliance

National Cancer Institute

Uniting Against Lung Cancer