[Methods and results of a regional tumour registrating system with special regard to malignant bone tumours (author's transl)].

The tumor registry of the Saarland registrates all malignant tumours with the "record-lincage-system" in a federal state from about 1,1 million inhabitants, including as well industrial as also country like regions. We examined especially primary malignant bone tumours and the Ewing-Sarkomas with respect to age distribution, regional and chronological incidence during the observation period from 1966--1974. We observated a significantly higher tumour incidence rate in the industrial region, close by refined steel producing foundries, especially of such tumours, occuring in great age. A possible connection of this fact to tumour aetiology is shortly discussed.