39,606 pathological reports issuing from the Department of Pathology, University of Vienna, during the years 1936, 1956 and 1976 were examined retrospectively. The Department of Maxillo-facial Surgery had referred 3.2% of the specimens. On analysis of the individual diagnoses, carcinoma was represented by 36.6% of the cases. Age, sex, distribution and tumour localization data are recorded in tabular form. In addition, data concerning in-patients treated for tumours at the Department of Maxillo-facial Surgery from 1974 to 1976 were stored in the Computer Centre of the University of Vienna. These data were subsequently analysed with regard to diagnosis, sex and average age of the patients.