@article{oai:niigata-u.repo.nii.ac.jp:00019588, author = {遠藤, 和男}, issue = {1}, journal = {新潟医学会雑誌, 新潟医学会雑誌}, month = {Jan}, note = {The epidemiologic studies on biliary tract cancer (BTC) have been conducted in our laboratory for last decade. The trigger which evoked our study was the fact that Niigata Prefecture where we live has the highest mortality from BTC among 47 prefectures in Japan. Although the proportional mortality ratio of BTC was only 5.46% among all sites of cancer in 1990, we think BTC is worthy to be investigated from an epidemiologic point of view, since its geographical distribution of death shows quite a characteristic clustering pattern. It is main purpose in present paper to review the results accumulated in our laboratory from the flow of epidemiologic study cycle.}, pages = {6--13}, title = {1) 胆道がんの疫学(シンポジウム 胆道癌をめぐる諸問題, 第488回新潟医学会)}, volume = {108}, year = {1994} }