Clinical Research Directory

* Installations of the patient: the position of the patient will depend on both extent of resection and location of the lesion. * Absence of laparotomy with the exception of the extraction of the resected specimen and absence of costal retractors. * Use of laparoscopic specific devices: * Use of multiple (3-7) ports depending on the operator's preference and technical difficulty (mainly 5-6 ports for major liver resection). * Use of a laparoscopic camera system with 0° or 30° * Use of a dedicated laparoscopic ultrasound probe. * Use of specific laparoscopic devices for coagulation, parenchymal transection and sealing. * Placement of the resected specimen in a plastic bag and extraction without fragmentation, depending on the surgeon's preferenceand the diameter of the resected specimen

* Installation of the patient: patients will be placed in supine position, the surgeon operating on the right side of the patient and the assistant standing on the left side. * Incision: the type of incision will depend on both the nature of the resection and the operator's preference. Various incisions such as bi subcostal incision, J-shaped incision, right subcostal incision and midline incision can be used. * Use of open surgical instruments and devices for coagulation and parenchymal transection. These may include the crush-clamp technique or ultrasonic dissection for parenchymal transection, bipolar coagulation, clips, sutures or open vascular stapler for hemostasis and biliostasis. * Methylene blue injection through the cystic drain to rule out biliary leakage will be performed depending on the surgeon's preference.