Cancer is a big challenge for developed countries. Cancer registries a
re an important database for tasks as research on causes, early detect
ion, the interdisciplinary health care delivery, the measurement of ou
tcome and cost-effectiveness analysis. The modern information- and com
munication technology offers the chance to integrate cancer registries
in the process of health care delivery and to broaden and focus epide
miological research on the entire course of cancer diseases. Related s
ystem concepts are exemplary for computerized registries.