Top 10 Medical Breakthroughs

#8. Early-Stage Test for Lung Cancer

Lung cancer is the leading cancer killer in America and is responsible for more deaths than the next three most common cancers combined (colon, breast, and prostate). One reason lung cancer is so deadly is that by the time tumors are diagnosed, usually as a result of physical symptoms like coughing up blood, the cancer is often advanced and tough to treat. But a new blood test may improve the odds of catching the disease earlier, at a more curable stage. Called LC Detect, the test measures blood levels of a protein present in all stages of lung cancer, but rarely seen in healthy people. While the test alone can't confirm a diagnosis of lung cancer, it can be used in conjunction with chest X-rays, CT scans, and other imaging technology to hone in on early-stage tumors

Connect to this TIME Story