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Resection of T4 hepatocellular carcinomas with adjacent structures, is it justified？

Hepatobiliary & Pancreatic Diseases International 2017年第1期16卷 52-57页

作者： Kenneth SH Chok Ka Kin Ng Tan To Cheung albert cy chan See Ching chan Chung Mau Lo Department of Surgery The University of Hong Kong

BACKGROUND： T4 hepatocellular carcinoma （HCC） with invasion to adjacent structure（s） may require resection of not only the tumor but also the invaded structure（s）. This study aims to assess whether such combined resection for T4 HCC is justifiable. METHODS： Adult patients with T4 HCC were divided into three groups. Group 1： tumors and invaded adjacent structures were resected together if histopathologically confirmed tumor invasion; group 2： same as group 1 but histopathologically confirmed tumor adhesion; group 3： tumor resection only. Group comparisons were made. RESULTS： Totally 144 patients were included in the study. There were 71, 14 and 59 patients in groups 1, 2 and 3, respec- tively. The groups were comparable in demographics, compli- cation and survival. Ten hospital deaths occurred （5, 0 and 5 in groups 1, 2 and 3, respectively; P=0.533）. The 5-year overall survival （hospital mortality excluded） was 17.8% in group 1, 14.3% in group 2, and 28.9% in group 3 （P=0.191）. The 5-year disease-free survival was 10.4% in group 1 and 14.5% in group 3 （no data for group 2 yet）（P=0.565）. On multivariate analysis, macrovascular invasion and poor differentiation were risk factors for survival whereas combined resection did not impact patients＇ survival. CONCLUSIONS： Combined resection achieved survival outcomes similar to tumor resection only. Patients with tumor invasion and those with tumor adhesion had comparable survival after combined resection. At centers with the required expertise, combined resection should be attempted to treat T4 HCCs with clinically suspected invasion of adjacent structures.

关键词： desmosplastic reaction en-bloc resection hepatocellular carcinoma invasion recurrence

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Hepatopancreatoduodenectomy for advanced hepatobiliary malignancies: a single-center experience

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Hepatobiliary & Pancreatic Diseases International 2017年第4期16卷 382-386页

作者： Wing Chiu Dai Kenneth SH Chok Tan To Cheung albert cy chan See Ching chan Chung Mau Lo Department of Surgery Queen Mary HospitalThe University of Hong Kong102 Pok Fu Lam RoadHong KongChina

BACKGROUND: Hepatopancreatoduodenectomy is a complicated and challenging procedure but necessary for curative resection for advanced hepatobiliary malignancies. This retrospective study was to examine the safety and survival outcomes of hepatopancreatoduodenectomy in our center. METHODS: Prospectively collected data of 12 patients who underwent hepatopancreatoduodenectomy for advanced hepatobiliary malignancies in our hospital from January 1998 to December 2014 were analyzed. The primary endpoints are treatment-related morbidity and mortality and the secondary endpoints are overall survival and disease-free survival. RESULTS: Curative resection was achieved in 11 (91.7%) patients. Complications developed in 10 (83.3%) patients. Three hospital deaths resulted from multiorgan failure secondary to postoperative pancreatic fistula or hepaticojejunostomy leakage. Six of the nine remaining patients had disease recurrence. The nine patients had a median survival of 39.8 (5.3-151.8) months. The 1-, 3- and 5-year overall survival rates were 66.7%, 55.6% and 27.8%, respectively. The corresponding disease-free survival rates were 55.6%, 44.4% and 29.6%, respectively. CONCLUSIONS: Morbidity and mortality after hepatopancreatoduodenectomy were significant. With RO resection, the 5-year overall survival and disease-free survival rates were 27.8% and 29.6%, respectively.

关键词： hepatectomy hepatopancreatoduodenectomy malignancy pancreaticojejunostomy pancreatoduodenectomy

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Acute pancreatitis induced by transarterial chemoembolization:a single-center experience of over 1500 cases

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Hepatobiliary & Pancreatic Diseases International 2016年第1期15卷 93-98页

作者： Wong Hoi She albert cy chan Tan To Cheung Kenneth SH Chok See Ching chan Ronnie TP Poon Chung Mau Lo Division of Hepatobiliary & Pancreatic Surgery and Liver Transplantation Department of SurgeryThe University of Hong Kong

BACKGROUND： Acute pancreatitis is a relatively rare but po- tentially lethal complication after transarterial chemotherapy. This study aimed to review the complications such as acute pancreatitis after transarterial chemotherapy with or without embolization for hepatocellular carcinoma. METHODS： A total of 1632 patients with hepatocellular car- cinoma who had undergone transarterial chemoembolization from ]anuary 2000 to February 2014 in a single-center were reviewed retrospectively. We investigated the potential com- plications of transarterial chemoembolization, such as acute pancreatitis and acute pancreatitis-related complications. RESULTS： Of the 1632 patients with hepatocellular carcinoma who had undergone 5434 transarterial chemoembolizations, 1328 were male and 304 female. The median age of these pa- tients was 61 years. Most （79.6%） of the patients suffered from HBV-related hepatoceUular carcinoma. The median tumor size was 5.2 cm. Of the 1632 patients, 145 patients underwent transarterial chemoembolization with doxorubicin elut- ing bead, making up a total of 538 episodes. The remaining patients underwent transarterial chemoembolization with cisplatin. Seven （0.4%） patients suffered from acute pancre- atitis post-chemoembolization. Six patients had chemoembo- lization with doxorubicin and one had chemoembolization with cisplatin. Patients who received doxornbicin eluting bead had a higher risk of acute pancreatitis [6/145 （4.1%） vs 1/1487 （0.1%）, P〈0.0001]. Two patients had anatomical arterial variations. Four patients developed acute pancreatitis- related complications including necrotizing pancreatitis （n=3） and pseudocyst formation （n=1）. All of the 4 patients resolved after the use of antibiotics and other conservative treatment. Three patients had further transarterial chemoembolization without any complication. CONCLUSIONS： Acute pancreatitis after transarterial chemo- embolization could result in serious complications, especially after treatment wit

关键词： transarterial chemoembolization acute pancreatitis hepatocellular carcinoma

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Outcomes of right-lobe and left-lobe living-donor liver transplantations using small-for-size grafts

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World Journal of Gastroenterology 2017年第23期23卷 4270-4277页

作者： Wong Hoi She Kenneth SH Chok James YY Fung albert cy chan Chung Mau Lo Department of Surgery the University of Hong Kong Department of Surgery and State Key Laboratory for Liver Research The University of Hong Kong Department of Medicine and State Key Laboratory for Liver Research The University of Hong Kong

AIM To analyze the outcomes of living-donor liver transplantation(LDLT) using left-lobe(LL) or right-lobe(RL) small-for-size(SFS) *** Prospectively collected data of adult patients who underwent LDLT at our hospital in the period from January 2003 to December 2013 were reviewed. The patients were divided into the RL-LDLT group and the LL-LDLT group. The two groups were compared in terms of short-and long-term outcomes, including incidence of postoperative complication, graft function, graft survival, and patient survival. A SFS graft was defined as a graft with a ratio of graft weight(GW) to recipient standard liver volume(RSLV)(GW/RSLV) of < 50%. The Urata formula was used to estimate *** Totally 218 patients were included for analysis, with 199 patients in the RL-LDLT group and 19 patients in the LL-LDLT group. The two groups were similar in terms of age(median, 53 years in the RL-LDLT group and 52 years in the LL-LDLT group, P = 0.997) but had significantly different ratios of men to women(165:34 in the RL-LDLT group and 8:11 in the LL-LDLT group, P < 0.0001). The two groups were also significantly different in GW(P < 0.0001), GW/RSLV(P < 0.0001), and graft cold ischemic time(P = 0.007). When it comes to postoperative complication, the groups were comparable(P = 0.105). Five patients died in hospital,4(2%) in the RL-LDLT group and 1(5.3%) in the LLLDLT group(P = 0.918). There were 38 graft losses, 33(16.6%) in the RL-LDLT group and 5(26.3%) in the LL-LDLT group(P = 0.452). The 5-year graft survival rate was significantly better in the RL-LDLT group(95.2% vs 89.5%, P = 0.049). The two groups had similar 5-year patient survival rates(RL-LDLT: 86.8%, LL-LDLT: 89.5%, P = 0.476).CONCLUSION The use of SFS graft in LDLT requires careful tailormade surgical planning and meticulous operation. LLLDLT can be a good alternative to RL-LDLT with similar recipient outcomes but a lower donor risk. Further research into different patient conditions is needed i

关键词： Small for size liver graft Right lobe graft Left lobe graft Living donor liver transplantation

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Survival outcomes of right-lobe living donor liver transplantation for patients with high Model for End-stage Liver Disease scores

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Hepatobiliary & Pancreatic Diseases International 2013年第3期12卷 256-262页

作者： Kenneth SH Chok See Ching chan James YY Fung Tan To Cheung albert cy chan Sheung Tat Fan Chung Mau Lo Department of Surgery The University of Hong Kong State Key Laboratory for Liver Research The University of Hong Kong Department of Medicine The University of Hong Kong

BACKGROUND: Controversy exists over whether living donor liver transplantation (LDLT) should be offered to patients with high Model for End-stage Liver Disease (MELD) scores. This study tried to determine whether a high MELD score would result in inferior outcomes of right-lobe LDLT. METHODS: Among 411 consecutive patients who received right-lobe LDLT at our center, 143 were included in this study. The patients were divided into two groups according to their MELD scores: a high-score group (MELD score ≥25; n=75) and a low-score group (MELD score chanical ventilation (21.3% vs 0%; P<0.001), or hemodialysis (13.3% vs 0%; P=0.005); the waiting time before LDLT was shorter (4 vs 66 days; P<0.001); more blood was transfused during operation (7 vs 2 units; P<0.001); patients stayed longer in the intensive care unit (6 vs 3 days; P<0.001) and hospital (21 vs 15 days; P=0.015) after transplantation;more patients developed early postoperative complications (69.3% vs 50.0%; P=0.018); and values of postoperative peak blood parameters were higher. However, the two groups had comparable hospital mortality. Graft survival and patient overall survival at one year (94.7% vs 95.6%; 95.9% vs 96.9%), three years (91.9% vs 92.6%; 93.2% vs 95.3%), and five years (90.2% vs 90.2%; 93.2% vs 95.3%) were also similar between the groups. CONCLUSIONS: Although the high-score group had signifi-cantly more early postoperative complications, the two groups had comparable hospital mortality and similar satisfactory rates of graft survival and patient overall survival. Therefore, a high MELD score should not be a contraindication to right-lobe LDLT if donor risk and recipi

关键词： Model for End-stage Liver Disease living donor liver transplantation survival right-lobe

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Recurrent pyogenic cholangitis:An indication for liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2022年第4期21卷 396-398页

作者： Wong Hoi She Wing Chiu Dai James YY Fung Tan To Cheung albert cy chan Chung Mau Lo Department of Surgery The University of Hong Kong102 Pok Fu Lam RoadHong KongChina

To the Editor:Recurrent pyogenic cholangitis(RPC),also known as Hong Kong disease[1],is an unique disease entity with a decreasing *** is characterized by the formation of intrahepatic biliary pigmented stones,which r... 详细信息

关键词： cholangitis obstruction liver

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Outcomes of side-to-side conversion hepaticojejunostomy for biliary anastomotic stricture after right-liver living donor liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2013年第1期12卷 42-46页

作者： Kenneth SH Chok See Ching chan Tan To Cheung albert cy chan William W Sharr Sheung Tat Fan Chung Mau Lo Department of Surgery The University of Hong Kong102 Pokfulam RoadHong KongChina State Key Laboratory for Liver Research The University of Hong Kong102 Pokfulam RoadHong KongChina

BACKGROUND:Conversion hepaticojejunostomy is considered the salvage intervention for biliary anastomotic stricture,a common complication of right-liver living donor liver transplantation with duct-to-duct anastomosis,after failed endoscopic *** aim of this study is to compare the outcomes of side-to-side hepaticojejunostomy with those of endto-side ***:Prospectively collected data of 402 adult patients who had undergone right-liver living donor liver transplantation with duct-to-duct anastomosis were *** of biliary anastomotic stricture was made based on clinical,biochemical,histological and radiological *** treatment was the first-line treatment of biliary anastomotic ***:Interventional radiological or endoscopic treatment failed to correct the biliary anastomotic stricture in 13 patients,so they underwent conversion *** of them received end-to-side hepaticojejunostomy and three received side-to-side *** the end-to-side group,two patients sustained hepatic artery injury requiring repeated microvascular anastomosis,two developed restenosis requiring further percutaneous transhepatic biliary drainage and balloon dilatation,and two required revision *** the side-to-side group,one patient developed re-stenosis requiring further endoscopic retrograde cholangiography and balloon *** re-operation was needed in this ***,outcomes in the two groups were similar in terms of liver function and graft ***:Despite the similar outcomes,side-to-side hepaticojejunostomy may be a better option for bile duct reconstruction after failed interventional radiological or endoscopic treatment because it can decrease the chance of hepatic artery injury and allows future endoscopic treatment if re-stricture ***,more large-scale studies are warranted to validate the results.

关键词： right-liver endoscopic treatment living donor liver transplantation biliary anastomotic stricture duct-to-duct anastomosis hepaticojejunostomy

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Samaritan donor interchange in living donor liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2014年第1期13卷 105-109页

作者： See Ching chan Kenneth SH Chok William W Sharr albert cy chan Simon HY Tsang Wing Chiu Dai Chung Mau Lo State Key Laboratory for Liver Research The University of Hong Kong Department of Surgery The University of Hong Kong

BACKGROUND: In order to overcome ABO blood group incompatibility, paired donor interchange has been practised in living donor liver transplantation. Liver transplantations using grafts donated by Samaritan living donors have been performed in Europe, North America, South Korea, and Hong Kong. Such practice is clearly on strong biological grounds although social and psychological implications could be far-reaching. Local experience has been satisfactory but is still limited. As few centers have this arrangement, its safety and viability are still being assessed under a clinical trial setting. METHODS: Here we report a donor interchange involving an ABO-compatible pair with a universal donor and an ABOincompatible pair with a universal recipient. This matching was not only a variation but also an extension of the donor interchange scheme. RESULTS: The four operations(two donor hepatectomies and two recipient operations) were successful. All the two donors and the two recipients recovered well. Such donor interchange further supports the altruistic principle of organ donation in contrast to exchange for a gain. CONCLUSIONS: Samaritan donor interchange certainly taxes further the ethical challenge of donor interchange. Although this practice has obvious biological advantages, such advantages have to be weighed against the potential increase in potential psychological risks to the subjects in the interchange. Further ethical and clinical evaluations of local and overseas experiences of donor interchange should guide future clinical practice in utilizing this potential organ source for transplantation.

关键词： orthotopic liver transplantation living donor liver transplantation right lobe

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Modulation of graft vascular inflow guided by flowmetry and manometry in liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2011年第6期10卷 649-656页

作者： See Ching chan Chung Mau Lo Kenneth SH Chok William W Sharr Tan To Cheung Simon HY Tsang albert cy chan Sheung Tat Fan Department of Surgery The University of Hong Kong 102 Pokfulam RoadHong KongChina State Key Laboratory for Liver Research The University of Hong Kong 102 Pokfulam RoadHong KongChina

BACKGROUND:Survival of the partial graft after living donor liver transplantation owes much to its tremendous regenerative *** excellent venous outflow capacity,a graft within a wide range of graft-to-standard-liver-volume ratios can cope with portal hypertension that is common in liver transplant ***,when the ratio range is exceeded,modulation of graft vascular inflow becomes necessary for graft *** interplay between graft-to-standard-liver-volume ratio and portal pressure,in the presence of portosystemic shunt or otherwise,requires individualized modulation of graft portal and arterial *** of portal inflow by shunt ligation can be guided by transonic flowmetry,whereas muting of portal inflow by splenic artery ligation can be monitored by portal electronic ***:We describe four cases to illustrate the ***:One patient had hepatic artery thrombosis resulting from splenic artery steal syndrome which was the sequela of small-for-size *** splenic artery ligation and re-anastomosis of the hepatic artery successfully muted the portal inflow and boosted the hepatic arterial *** patient with portal vein thrombosis underwent *** inflow was boosted with ligation of portosystemic shunt,which is often present in these patients with portal *** coexistence of splenic aneurysm and splenorenal shunt required ligation of both in the third *** fourth patient,with portal pressure and flow monitoring,avoided ligation of a coronary vein which became a main portal inflow after portal ***:Management of graft inflow modulation guided selectively by transonic flowmetry or portal manometry was described.

关键词： graft inflow liver transplantation modulation

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Radiological prognosticators of hepatocellular carcinoma treated by hepatectomy

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Hepatobiliary & Pancreatic Diseases International 2012年第6期11卷 612-617页

作者： Kevin KW Chu See Ching chan Sheung Tat Fan Kenneth SH Chok Tan To Cheung William W Sharr albert cy chan Chung Mau Lo Department of Surgery The University of Hong Kong102 Pokfulam Road Hong Kong China State Key Laboratory for Liver Research The University of Hong Kong 102 Pokfulam Road Hong Kong China

BACKGROUND: Hepatectomy is the main curative treatment for hepatocellular carcinoma (HCC), but postoperative long- term survival is poor. Preoperative radiological features of HCC displayed by computed tomography or magnetic resonance imaging could serve as additional prognostic factors. This study aimed to identify preoperative radiological features of HCC that may be of prognostic significance in hepatectomy. METHODS: Ninety-two patients who underwent hepatectomy for HCC were included in this study. Preoperative radiological features including tumor number, size, location (peripheral, middle, central), portal vein invasion, hepatic vein invasion, and presence of pseudo-capsule were analyzed in relation to survival. RESULTS: With a median follow-up period of 41.7 months, the 1-, 3- and 5-year overall survival rates were 85%, 65% and 58%, respectively. Univariate analysis showed that portal vein invasion and absence of pseudo-capsule were significant prognostic factors for overall survival, while all the examined radiological features were prognostic factors for disease-free survival. Multivariate analysis for overall survival found no significant factor. On multivariate analysis for disease-free survival, patients who had tumors with portal vein invasion had poorer survival with a hazard ratio of 2.26 (95% CI, 1.05-4.91; P=0.038) and patients with single nodular HCC or pseudo-capsulated HCC had better survival with a hazard ratio of 0.50 (95% CI, 0.27-0.94; P=0.032) and 0.38 (95% CI, 0.14-0.99; P=0.048), respectively. CONCLUSIONS: Demonstrable pseudo-capsule of HCC and solitary HCC on imaging and absence of portal vein invasionare features associated with better disease-free survival after hepatectomy. These features may guide treatment planning for HCC.

关键词： hepatocellular carcinoma hepatectomy diagnostic imaging prognosis survival analysis

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