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RACS ASC 2025
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Complex biliary anatomy; The dangers of tiger country
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Poster

Disciplines

HPB Surgery

Talk Description

Institution: Auckland City Hospital, General Surgery - NZ, Aotearoa New Zealand

Purpose Laparoscopic cholecystectomy is a common procedure performed by surgical trainees with a low complication rate. However appropriate identification of anatomy and dissection of Calot’s triangle is essential to reducing the risk of bile duct injury which can have significant impact on patient outcomes. Our intraoperative photos highlight a case of distorted anatomy with major risk of common bile duct (CBD) injury and will act as a warning of the potential dangers that can occur in Calot’s tiger country. Methodology: We present a case of a 52-year-old man with acute cholecystitis on a background of prior episodes suggestive of chronic disease. Normal anatomical landmarks and a safe line of dissection above Rouviere's sulcus and the base of segment 4a were identified. A large tubular structure was dissected out above this line and seemed to be Hartman’s pouch, although we couldn’t exclude a bile duct. Results: Careful blunt dissection using the suction and Maryland grasper revealed that the CBD had been pulled up and was sitting high in front of Hartman’s pouch with a high risk of being mistaken and injured. Chronic inflammation may have played a role in distorting and pulling up the duct. An intraoperative cholangiogram (IOC) confirmed this and the cystic duct was safely identified then divided. Conclusions: Safe dissection of Calot’s triangle and a critical view of safety is essential. Prior inflammation may distort structures and a high index of suspicion of aberrant anatomy should suspected. A second opinion from a senior surgeon and IOC are helpful tools to identify anatomy. Beware of the CBD in tiger country.
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Dr Devlin Elliott -