Tumor documentation is an important task for both clinical research and pat
ient care. Documentation systems for these purposes have to be planned syst
ematically and should be goal oriented. We applied the method of a so-calle
d 'standardized documentation protocol' for systematically planning two doc
umentation systems in oncology: one for the tumor center Heidelberg/Mannhei
m and the other for a nationwide project in the field of documentation and
therapy planning in pediatric oncology. The method proved to be helpful in
both cases even though the resulting documentation protocols are completely
different and although they served different objectives, Therefore, the ai
m of the paper is to motivate and help medical informatics professionals to
systematically plan other documentation systems using this method.