[Results of epidemiological studies of primary cancer of the liver in the Tiumen district].

The study of the records of Tjumen Province postmortem rooms indicated a relattively high specific weight of primary cancer of the liver. Data on 1225 patients for the period of 1962-1971 are presented. The morbidity per 100 000 of population--12.5. The highest index--in Khanty-Mansy District--20.7, while a standard index--22.08. The zone of the highest incidence of primary cancer of the liver coincides with a relatively high opisthordiasis morbidity. Due to opisthordiasis tumors of the cholangiocellular structure arise in males as frequently as in females.