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Background: Minimally invasive approaches to major liver resection have been limited by presumed difficulty of the operation. While some concerns arise from mastering the techniques, factors such as tumor size and liver parenchymal features have anecdotally been described as surrogates for operative difficulty. These factors have not been systematically studied for minimally invasive right hepatectomy (MIRH)., Methods: Seventy-five patients who underwent MIRH during 2007-2016 by the senior author were evaluated; these were compared to control group of open right hepatectomy. Demographics, operative, and post-operative variables were collected. Operative times and estimated blood loss, two objective parameters of operative difficulty were correlated to volume of hepatic resection, parenchymal transection diameter and liver parenchymal features using regression analysis., Results: Thirty-eight (50.6%) resections were performed for malignant indications. Average tumor size was 5.7 cm (±3.6), mean operative time was 196 min (±74), and mean EBL was 220 mL (±170). Average transection diameter was 10.1 cm (±1.7). There was no correlation between operative difficulty with parenchymal transection diameter or presence of steatosis. Blood loss was higher with increased right hepatic lobe volume and body mass index., Conclusions: This analysis of a very defined anatomical resection suggests that the often quoted radiographic and pathologic features indicative of a challenging procedure were not significant in determining operative difficulty.

Background: Incisional ventral hernias(IVH) are a common complication following open abdominal surgery. The aim of this study was to uncover the hidden costs of IVH following right-sided hepatectomy., Methods: Outcomes and hospital billing data for patients undergoing open(ORH) and laparoscopic right-sided hepatectomies(LRH) were reviewed from 2008 to 2018., Results: Of 327 patients undergoing right-sided hepatectomies, 231 patients were included into two groups: ORH(n = 118) and LRH(n = 113). Median follow-up-times and time-to-hernia were 24.9-months(0.3-128.4 months) and 40.5-months(0.4-81.4 months), respectively. The incidence of hernias at 1, 3, 5, and 10 years was 6/231(2.6%), 13/231(5.6%), 15(6.5%), and 17/231(7.4%); ORH = 14, LRH = 3, p = 0.003), respectively. In terms of IVH repair(IVHR), total operative costs ($10,719.27vs.$4,441.30,p < 0.001) and overall care costs ($20,541.09vs.$7,149.21,p = 0.044) were significantly greater for patients undergoing ORH. Patients whom underwent ORHs had longer hospital stays and more complications following IVHR. Risk analysis identified ORH(RR-10.860), male gender(RR-3.558), BMI ≥30 kg/m 2 (RR-5.157), and previous abdominal surgery(RR-6.870) as predictors for hernia development (p < 0.030)., Conclusion: Evaluation of pre-operative hernia risk factors and utilization of a laparoscopic approach to right-sided hepatectomy reduces incisional ventral hernia incidence and cost when repair is needed., (Copyright © 2019 Elsevier Inc. All rights reserved.)

Background: Minimally invasive approaches for major hepatectomy have been marred by significant rates of conversion and associated morbidity. This study aimed to determine risk factors for conversion as well as postoperative morbidity in patients undergoing minimally invasive right-sided hepatectomy (MIRH)., Methods: Data for patients undergoing MIRH between 2008 and 2017 at Emory University were reviewed. Risk factors for conversion were determined using multivariate regression analysis. Outcomes of conversion patients were compared with those who underwent successful MIRH or elective open surgery., Results: Unplanned conversion occurred in 7 (6.25%) of 112 patients undergoing MIRH. Primary reason for conversion was difficult dissection secondary to inflammation and severe adhesions. No preoperative clinical factor was identified that predicted conversions. Converted cases had higher EBL and pRBC transfusion compared to non-converted cases however morbidity was similar to those undergoing primary open surgery., Conclusion: Difficult dissection and adhesions remained the only clinically applicable parameter leading to unplanned conversions. While these did offset benefits of a successful minimally invasive approach, it did not increase risk of postoperative complications compared with planned open surgery., (Copyright © 2018 Elsevier Inc. All rights reserved.)