This week, Massachusetts General Hospital discussed the very early but very successful tests of a new cancer screening system that could detect cancer much earlier than current methods. It could also give doctors much better information in determining treatment and much quicker results in determining the effectiveness of treatment. We discuss the early promise of this technology with Dr. Licia Sequist, a thoracic oncologist at Massachusetts General Hospital. She was also lead principal investigator for the hospital’s clinical trials of this new cancer screening technology.