The segment IV approach: a useful method for achieving the critical view of safety during laparoscopic cholecystectomy in patients with anomalous bile duct

摘要

Schematic depiction of the segment IV approach. The gallbladder was first isolated along the diagonal line (D-line) of the segment IV of the liver (white arrow). The cystic structure was then dissected toward the D-line to achieve the critical view of safety (CVS, red arrow). In these case series, anomalous cystic ducts branched off the aberrant anterior hepatic duct (a), aberrant posterior hepatic duct (b), and aberrant left hepatic duct (c), respectively