Abstract
The aim of this study was to evaluate ways to prevent bile duct injury during laparoscopic cholecystectomy in patients with anomalous biliary tract anatomy. The biliary tract was studied using cholangiograms of 511 patients who had gallbladder disease and was dissected in 92 cadaveric specimens. The authors classified confluent forms of the cystic duct and the bile duct into five different types, including four anomalous types. Sixteen instances (3.13%) of anatomic variation of the biliary tract were found among the patients, and four cases (4.35%) were found in the cadavers. Among the 511 patients, there were 495 cases of type C anatomy, three cases of type A, seven cases of type R, six cases of type P, and zero cases of type L; among the 92 cadaveric specimens, there were 88 cases of type C anatomy, one case of type R, two cases of type P, and one case of type L. For anatomic types A, P, and R, there is a high probability of risk of cutting the wrong duct. Therefore, it is important to clarify the anatomy of the biliary tract by preoperative examination and to carefully dissect the cystic duct close to the neck of the gallbladder during laparoscopic cholecystectomy. Anatomic variation of the biliary tract is common and can create a rare pitfall during laparoscopic cholecystectomy.
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