LAUSR

Despite the widespread of laparoscopic technique in hepatobiliary tumor resection, nearly all Klatskin tumor resection is undertaken using an open approach (Marino et al. in Updates Surg 72(3):911–912. https://doi.org/10.1007/s13304-020-00777-8; Sucandy et al. in Am Surg, 2020. https://doi.org/10.1177/0003134820956336, Am Surg, 2020;86(3):200–207; Luberice et al. in HPB (Oxford), 2020. https://doi.org/10.1016/j.hpb.2020.10.008; Ciria et al. in J Hepatobiliary Pancreat Sci, 2020. https://doi.org/10.1002/jhbp.869; Chong and Choi in J Gastrointest Surg 23(9):1947–19488, 2019. https://doi.org/10.1007/s11605-019-04242-9). A minimally invasive approach for malignant extrahepatic biliary resection is rarely used due to technical complexity and concerns of oncological inferiority. In the United States, robotic technique for Klatskin tumor resection has not been adequately described. This video described our technique of robotic extrahepatic biliary resection with Roux-en-Y hepaticojejunostomy (HJ) for type 2 Klatskin tumor. A 77-year-old man presented with obstructive jaundice. Endobiliary brushing confirmed adenocarcinoma. MRI/MRCP showed a focal lesion at the cystic duct entrance into the common hepatic duct, extending cephalad toward the biliary bifurcation. No obvious vascular invasion was identified on the CT scan. The operation was undertaken using a six-port technique. Systematic portal dissection was undertaken to identify the bile duct at the level of the pancreas up toward the hepatic hilum. A partial Kocher maneuver was performed to expose the area dorsal to the distal common bile duct, which allows for a more thorough lymphadenectomy and facilitates creation of a later tension-free hepaticojejunostomy. The distal common bile duct was transected, and the distal margin was sent for frozen section. The right hepatic artery coursing posterior to the common hepatic duct was skeletonized and preserved. Biliary duct bifurcation was transected at the level of the right and left duct, removing the cancer completely. Portal lymphadenectomy was completed as part of oncological staging and treatment. A total of eight lymph nodes were removed and all confirmed to be nonneoplastic on the final pathology report. For the purpose of the biliary reconstruction, a standard side-to-side stapled jejunojejunostomy was created. A jejunal mesenteric defect was closed to prevent a future internal herniation. A 60-cm Roux limb was transposed antecolically for the Roux-en-Y hepaticojejunostomy. A running technique was used to create a watertight end-to-side bilioenteric anastomosis, using 3-0 barbed sutures, 6 inches in length. A closed suction drain was placed before closing. Pathology report confirmed intraductal papillary adenocarcinoma with R-0 resection margins (proximal, distal, and radial margin). Perineural invasion was present; however, lymphovascular invasion was not identified. Total operative time was 240 minutes with 75 ml of estimated blood loss. The postoperative recovery was uneventful. One-year follow-up showed no evidence of disease recurrence or HJ anastomotic stricture. This video demonstrates a safe and feasible application of the robotic platform in extrahepatic bile duct cancer resection requiring fine biliary reconstruction.