A precancerous condition is a disease, syndrome, or finding that, if left untreated, may lead to cancer. These include: Cervix Dysplasia; Erythroplasia; Leukoplakia; Lymphomatoid Granulomatosis; Lymphomatoid Papulosis; Preleukemia; Xeroderma Pigmentosum. The identification and treatment of precancerous conditions on a wide-scale could lead to significant drops in deaths due to cancer. This book gathers research from around the globe on this dynamic subject.