It is very important to Know the variable anatomical aberrations in biliary trees when we are going to perform biliary and hepatic surgery.
We retrospectively analysed cholangiographies of 125 patients received biliary operations and the radiologic findings were compared with location of stones, complication rates and the possibility of residual stones.
@ES The results were as follows:
@EN 1) According to Couinaud's classification the incidence of hepatic duct confluence type A was 72.8%, type B 13.6%, type C 4.8%, type D 8.0%, type E 0.8%, and there was no significant difference in frequency of hepatic duct aberrations between
GB
stone patients and Non-GB stone patients.
2) The frequency of intrahepatic duct variations was 44% and there was no significant difference between GB stone patients and Non-GB stone patients.
3) The most frequent intrahepatic segmental duct variation accompanied with hepatic duct confluence variations was seen in segment I(26.5%).
4) A subvesical duct in the cystic plate was seen in 13% and the postoperative complication rate was not significantly higher than that of the cases without subvesical duct(p>0.05).
5) There was no correlation between the ductal variations and the occurrence of gallstones (p>90.05).
6) The occurrence of remained stones in patients having intrahepatic ductal variations was not significantly higher than that in patients having typical intrahepatic ductal systme(p>0.05).
7) The liver should be dissected carefully when we resect when left lobe(segment II, III, IV) or left lateral segment of the patients having anatomical variations of hepatic duct. Those types were Couinaud's type C, D or type d, e, f, g of
segment
IV
by Healey and Schroy's classification.
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