This groundbreaking, multi-disciplinary title focuses on detection, measurement and interpretation of cancer precursors (defined as any lesion up to but not including invasive cancer, e.g. polyps as a pre-invasive lesion leading to colon cancer) at the most important sites where solid tumors occur, including the esophagus, colon, liver, etc. Evidence-based policy recommendations round out this essential volume of interest to pathologists, epidemiologists, cancer researchers, oncologists, and public health professionals.