Doctors Propose New Cancer Definition to Avoid Unnecessary Treatments…

A National Cancer Institute trial found that screening by 3-dimensional X-ray tests known as "spiral CT scans" reduced lung cancer deaths by 20 percent over five years. But the test has its drawbacks, including increased exposure to radiation and false…

People should receive angioplasties to unclog arteries in the first 90 minutes following a heart attack, though they often don't receive the treatment in time, the American Heart Association said at a recent meeting. An expert discusses this and other…

A new study says early screening could save the lives of thousands of smokers. Despite the finding, some in the medical community question both the cost and accuracy of the test. Health correspondent Susan Dentzer explains the findings.