[Early diagnostic system of minute hepatocellular carcinoma, and neoplasms of biliary tract and pancreas].
D001661:Biliary Tract Neoplasms / Q000175:diagnosis*; D006528:Carcinoma, Hepatocellular / Q000175:diagnosis*; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis*; D010190:Pancreatic Neoplasms / Q000175:diagnosis*; D013997:Time Factors; D014463:Ultrasonography