Effects of Preservation of Donor Liver Gastroduodenal Artery on Post-Transplant Biliary Complications in 187 Liver Transplant Recipients: A Retrospective Study.

BACKGROUND This retrospective study aimed to evaluate the effects of preservation of the donor liver gastroduodenal artery on post-transplant biliary complications in 187 liver transplant recipients. MATERIAL AND METHODS The clinical data of 187 liver transplantation recipients were retrospectively analyzed. Recipients were divided into conventional and modified groups. The technical point of the modified group is to preserve at least 2 cm of the distal gastroduodenal artery, and pay special attention to preserve the superior pancreaticoduodenal artery to ensure the distal blood supply to the common bile duct. RESULTS The modified group had significantly shorter operative time (7.17 vs 7.98) h (P<0.001) and less intraoperative blood loss (2715.40 vs 3434.93) ml (P=0.003) than the conventional group. The incidence of postoperative biliary complications (including anastomotic biliary leakage, ischemic bile duct stenosis, and anastomotic bile duct stenosis) in the modified group (4/114, 4.1%) was significantly lower (15/73, 20.5%) (P<0.001). There was no significant difference in the intraoperative cold and warm ischemia time and postoperative hospital stay length between the 2 groups. In addition, there was no significant difference in the effect of cardiac-death and brain-death sources on perioperative biliary complications, while the peak postoperative transaminase and total bilirubin were higher in patients receiving the donor liver of cardiac death (P<0.05). CONCLUSIONS Preserving the integrity of the donor gastroduodenal artery and surrounding tissue is beneficial to protect the blood supply of the extrahepatic bile duct, and can reduce the incidence of biliary complications.

Extra-Glissonian Approach for Laparoscopic Liver Right Anterior Sectionectomy.

BACKGROUND: Open right anterior sectionectomy, which involves resection of liver segments 5 and 8, has been reported to have similar postoperative mortality rates as right hepatectomy, but it has a decreased risk in developing posthepatectomy liver failure. Totally laparoscopic right anterior sectionectomy is technically demanding and has rarely been reported in hepatocellular carcinoma (HCC) patients with cirrhosis. METHODS: Our experience in carrying out totally laparoscopic right anterior sectionectomy on four consecutive HCC patients with cirrhosis from November 2016 to August 2017 using the extraglissonian approach formed the basis of this report. RESULTS: All four patients had hepatitis B-related HCC. The mean operation time was 502 ± 55 minutes. All patients underwent intermittent Pringle's Maneuver with cycles of clamp/unclamp times of 15/5 minutes for the left-sided liver transection plane, and intermittent right hemihepatic vascular inflow occlusion with cycles of clamp/unclamp times of 30/5 minutes for the right-sided liver transection plane. The mean Pringle's Maneuver time was 58.8 ± 11.4 minutes and the mean right hemihepatic vascular inflow occlusion time was 66.3 ± 11.1 minutes. The mean intraoperative blood loss was 512 ± 301 mL. No patients required any blood transfusion. There was no conversion to open surgery. Postoperative complications included intra-abdominal bleeding requiring reoperation for hemostasis (n = 1), intra-abdominal collection requiring percutaneous drainage (n = 1), and right pleural effusion requiring percutaneous drainage (n = 1). There was no 90-day postoperative mortality. The mean hospital stay was 10.7 ± 2.9 days. After a median follow-up of 10 (range, 6-16) months, one patient developed HCC recurrence in the liver remnant. CONCLUSION: Totally laparoscopic right anterior sectionectomy using the extraglissonian approach was technically feasible and safe in expert hands. More data are needed to assess the long-term oncological survival outcomes.

Laparoscopic Right Hepatectomy Via an Anterior Approach for Hepatocellular Carcinoma.

BACKGROUND AND OBJECTIVES: In the past, right hepatectomy via the anterior approach has been regarded as one of the many standard approaches for hepatectomy. However, total laparoscopic right hepatectomy from the anterior approach has been regarded as technically challenging. We report our experience in using the anterior approach in total laparoscopic right hepatectomy for hepatocellular carcinoma (HCC). METHODS: From June 2013 through December 2015, five consecutive patients underwent total laparoscopic right hepatectomy using the anterior approach, but without the hanging maneuver. RESULTS: The mean operative time was 360 (range, 300-480) minutes, and the mean blood loss was 340 (110-600) mL. No patient needed any blood transfusion. There was no conversion to open surgery. Ascites, pleural effusion, and bile leakage occurred in 2, 1, and 1 patients, respectively. No patients expired as a result of the surgery or liver failure. The mean hospital stay was 7 (4-15) days. All patients had R0 resection. After a mean follow-up of 22 (8-33) months, no patients experienced recurrence of disease. CONCLUSION: Total laparoscopic right hepatectomy using the anterior approach is feasible and safe.

T cell receptor repertoire profiling predicts the prognosis of HBV-associated hepatocellular carcinoma.

Tumor-infiltrating T cell repertoire has been demonstrated to be closely associated with anti-tumor immune response. However, the relationship between T cell repertoire in tumor tissue and prognosis has never been reported in Hepatocellular carcinoma (HCC). We performed the high-throughput T cell receptor (TCR) sequencing to systematically characterize the infiltrating T cell repertoires of tumor and matched adjacent normal tissues from 23 HBV-associated HCC patients. Significant differences on usage frequencies of some Vß, Jß, and Vß-Jß paired genes have been found between the 2 groups of tissue samples, but no significant difference of TCR repertoire diversity could be found. Interestingly, the similarity of TCR repertoires between paired samples or the TNM stage alone could not be helpful to evaluate the prognosis of patients very well, but their combination could serve as an efficient prognostic indicator that the patients with early stage and high similarity showed a better prognosis. This is the first attempt to assess the potential value of TCR repertoire in HCC prognosis, and our findings could serve as a complement for the characterization of TCR repertoire in HCC.

Extra-glissonian Approach for Total Laparoscopic Left Hepatectomy: A Prospective Cohort Study.

Laparoscopic liver resection under hemihepatic vascular inflow control has advantages over Pringle's maneuver, especially in patients with cirrhosis. From January 2016 to August 2016, 7 patients who underwent total laparoscopic left hepatectomy under hemihepatic vascular inflow occlusion using the extra-glissonian approach were included in this study. All were hepatitis B carriers and 4 had cirrhosis. The mean operation time was 247 minutes. The mean transection time was 110 minutes. No patient needed additional Pringle's maneuver. The mean intraoperative blood loss was 74 ml and no patient required blood transfusion. No open conversion happened. Postoperatively, no patient developed complications and there was no perioperative mortality. The mean resection margin was 2 cm. The mean hospital stay was 6 days. Upon a mean follow-up of 9 months, no patient developed tumor recurrence. The technique of total laparoscopic left hepatectomy using extra-glissonian approach was safe and feasible. The early surgical outcomes were good.

Laparoscopic liver resection under hemihepatic vascular inflow occlusion using the lowering of hilar plate approach.

BACKGROUND: With advances in technology, laparoscopic liver resection is widely accepted. Laparoscopic liver resection under hemihepatic vascular inflow occlusion has advantages over the conventional total hepatic inflow occlusion using the Pringle's maneuver, especially in patients with cirrhosis. METHOD: From November 2011 to August 2012, eight consecutive patients underwent laparoscopic liver resection under hemihepatic vascular inflow occlusion using the lowering of hilar plate approach with biliary bougie assistance. RESULTS: The types of liver resection included right hepatectomy (n=1), right posterior sectionectomy (n=1), left hepatectomy and common bile duct exploration (n=1), segment 4b resection (n=1), left lateral sectionectomy (n=2), and wedge resection (n=2). Four patients underwent right and 4 left hemihepatic vascular inflow occlusion. Four patients had cirrhosis. The mean operation time was 176.3 minutes. The mean time taken to achieve hemihepatic vascular inflow occlusion was 24.3 minutes. The mean duration of vascular inflow occlusion was 54.5 minutes. The mean intraoperative blood loss was 361 mL. No patient required blood transfusion. Postoperatively, one patient developed bile leak which healed with conservative treatment. No postoperative liver failure and mortality occurred. The mean hospital stay of the patients was 7 days. CONCLUSION: Our technique of hemihepatic vascular inflow vascular occlusion using the lowering of hilar plate approach was safe, and it improved laparoscopic liver resection by minimizing blood loss during liver parenchymal transection.