(9men,6women,aged49-71,meanage55years).Allthepatientswereidentifiedat surgeryandpathology.Results Therewerecholangiectasisinallcases.Intrahepaticductdilatation werefoundas"soft mine"inallcases."Dualpipes"signwasfoundinheadofpancreasin9cases,"doublecircus"signinmarked-gradedilata- tionofcholedochin5cases...