This book is the standard reference manual of cancer registration methodology and uses. It provides guidelines on all aspects, such as the establishment of a registry, collection, coding, verification and analysis of data, and the uses to which cancer registry data may be put. Emphasis is on population-based registration, which provides information on a defined population and permits calculation of incidence rates. Such registries are useful in cancer epidemiology (identification of possible aetiological factors), in planning future health services, and in monitoring the effectiveness of cancer prevention and treatment.