the diagnostic advantages of the various methods are discussed ( mainly laparoscopy and liver biopsy ) and the histologic and electron microscopic changes of percutaneous transhepatic cholangiography , via echography -- 81 per cent , laparoscopy -- 73 per cent , scintigraphy -- 61.53 per cent and liver biopsy -- 50 per cent .
C0430022
diagnostic
C0041618
echography