Background: In the context of more than 20 therapy optimizing clinical trials in pediatric oncology an extensive documentation with a big number of case report forms was developed in the last 20 to 25 years. Across these trials same information is partially captured in different terminological ways, by which documentation about patients in the clinics is made more difficult.
Method: Terminology of therapy optimizing clinical trials of German Society for Pediatric Oncology and Hematology (GPOH) is standardized by a central "standards committee".
Result: As a first result the basic data set of GPOH could be revised and made available in internet via http://www.dospo.uni-hd.de.
Conclusion: A basis of a unique documentation language in pediatric oncology is available for German speaking regions.