Step 4 - Cholecystectomy, dissection of hepatic pedunculated lymph nodes In all cases with liver tumor on the right side of the crescent ligament, we performed cholecystectomy to facilitate dissection control of the right hepatic Glisson pedicle, posterior or anterior segment, in addition to cholecystectomy with drainage through the cystic duct (sonde Escart) also to check for bile leakage after hepatectomy.