Approximately 22 000 cases of gallbladder and extrahepatic cholangiocarcinoma are diagnosed every year in Japan, 1 which ranks 13th among all carcinomas and has shown an increasing trend in recent years.
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Approximately 22 000 cases of gallbladder and extrahepatic cholangiocarcinoma are diagnosed every year in Japan, 1 which ranks 13th among all carcinomas and has shown an increasing trend in recent years.