[The prevalence and structure of biliary tract diseases in the rural population of northern regions of Siberia].

Biliary tracts were investigated in 3420 migrants and 1445 aborigines (Evens, Evenkis) living in Evenkia and Yakutia. Acalculous chronic cholecystitis and cholelithiasis were found in 8.5 and 8.8% of the migrants, respectively. In aborigines these diseases occurred in 4.5 and 1.5%, respectively. The risk to develop biliary disease for migrants grows after 4-5 years of stay in the Far North. It is concluded that biliary pathology in the Far North population was related to ethnic and geographical factors.