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21篇 您的检索式:作者名="Simon TO"
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1High-intensity focused ultrasound ablation:An effective bridging therapy for hepatocellular carcinoma patients显示文摘AIM:To analyze whether high-intensity focused ultrasound(HIFU) ablation is an effective bridging therapy for patients with hepatocellular carcinoma(HCC).METHODS:From January 2007 to December 2010,49 consecutive HCC patients were listed for liver transplantation(UCSF criteria).The median waiting time for transplantation was 9.5 mo.Twenty-nine patients received transarterial chemoembolization(TACE) as a bringing therapy and 16 patients received no treatment before transplantation.Five patients received HIFU ablation as a bridging therapy.Another five patients with the same tumor staging(within the UCSF criteria) who received HIFU ablation but not on the transplant list were included for comparison.Patients were comparable in terms of Child-Pugh and model for end-stage liver disease scores,tumor size and number,and cause of cirrhosis.RESULTS:The HIFU group and TACE group showed no difference in terms of tumor size and tumor number.One patient in the HIFU group and no patient in the TACE group had gross ascites.The median hospital stay was 1 d(range,1-21 d) in the TACE group and two days(range,1-9 d) in the HIFU group(P < 0.000).No HIFU-related complication occurred.In the HIFU group,nine patients(90%) had complete response and one patient(10%) had partial response to the treatment.In the TACE group,only one patient(3%) had response to the treatment while 14 patients(48%) had stable disease and 14 patients(48%) had progressive disease(P = 0.00).Seven patients in the TACE group and no patient in the HIFU group dropped out from the transplant waiting list(P = 0.559).CONCLUSION:HIFU ablation is safe and effective in the treatment of HCC for patients with advanced cirrhosis.It may reduce the drop-out rate of liver transplant candidate.Tan To Cheung Sheung Tat Fan See Ching Chan Kenneth SH Chok Ferdinand SK Chu Caroline R Jenkins Regina CL Lo James YY Fung Albert CY Chan William W Sharr Simon HY Tsang Wing Chiu Dai Ronnie TP Poon Chung Mau Lo 2013World Journal of Gastroenterology2013,19,20:23
2Pancreaticoduodenectomy with vascular reconstruction for adenocarcinoma of the pancreas with borderline resectability显示文摘AIM:To analyze whether pancreaticoduodenectomy with simultaneous resection of tumor-involved vessels is a safe approach with acceptable patient survival.METHODS:Between January 2001 and March 2012,136 patients received pancreaticoduodenectomy for adenocarcinoma at our hospital.Seventy-eight patients diagnosed with pancreatic head carcinoma were included in this study.Among them,46 patients received standard pancreaticoduodenectomy(group 1)and32 patients received pancreaticoduodenectomy with simultaneous resection of the portal vein or the superior mesenteric vein or artery(group 2)followed by reconstruction.The immediate surgical outcomes and survivals were compared between the groups.Fifty-five patients with unresectable adenocarcinoma of the pancreas without liver metastasis who received only bypassoperations(group 3)were selected for additional survival comparison.RESULTS:The median ages of patients were 67 years(range:37-82 years)in group 1,and 63 years(range:35-86 years)in group 2.All group 2 patients had resection of the portal vein or the superior mesenteric vein and three patients had resection of the superior mesenteric artery.The pancreatic fistula formation rate was21.7%(10/46)in group 1 and 15.6%(5/32)in group2(P=0.662).Two hospital deaths(4.3%)occurred in group 1 and one hospital death(3.1%)occurred in group 2(P=0.641).The one-year,three-year and five-year overall survival rates in group 1 were 71.1%,23.6%and 13.5%,respectively.The corresponding rates in group 2 were 70.6%,33.3%and 22.2%(P=0.815).The one-year survival rate in group 3 was13.8%.Pancreaticoduodenectomy with simultaneous vascular resection was safe for pancreatic head adenocarcinoma.CONCLUSION:The short-term and survival outcomes with simultaneous resection were not compromised when compared with that of standard pancreaticoduodenectomy.Tan To Cheung Ronnie TP Poon Kenneth SH Chok Albert CY Chan Simon HY Tsang Wing Chiu Dai See Ching Chan Sheung Tat Fan Chung Mau Lo 2014World Journal of Gastroenterology2014,20,46:8
3Modulation of graft vascular inflow guided by flowmetry and manometry in liver transplantation显示文摘BACKGROUND:Survival of the partial graft after living donor liver transplantation owes much to its tremendous regenerative ability.With 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 recipients.However,when the ratio range is exceeded,modulation of graft vascular inflow becomes necessary for graft survival.The 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 inflows.Boosting 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 manometry.METHOD:We describe four cases to illustrate the above.RESULTS:One patient had hepatic artery thrombosis resulting from splenic artery steal syndrome which was the sequela of small-for-size syndrome.Emergency splenic artery ligation and re-anastomosis of the hepatic artery successfully muted the portal inflow and boosted the hepatic arterial inflow.Another patient with portal vein thrombosis underwent thrombendvenectomy.Portal inflow was boosted with ligation of portosystemic shunt,which is often present in these patients with portal hypertension.The coexistence of splenic aneurysm and splenorenal shunt required ligation of both in the third patient.The fourth patient,with portal pressure and flow monitoring,avoided ligation of a coronary vein which became a main portal inflow after portal thrombendvenectomy.CONCLUSION:Management of graft inflow modulation guided selectively by transonic flowmetry or portal manometry was described.See Ching Chan Chung Mau Lo Kenneth SH Chok William W Sharr Tan To Cheung Simon HY Tsang Albert CY Chan Sheung Tat Fan 2011Hepatobiliary & Pancreatic Diseases International2011,10,6:5
4Entecavir Monotherapy Is Effective in Suppressing Hepatitis B Virus After Liver Transplantation显示文摘James Fung Cindy Cheung See–Ching Chan Man–Fung Yuen Kenneth S.H. Chok William Sharr Wing–Chiu Dai Albert C.Y. Chan Tan–To Cheung Simon Tsang Banny Lam Ching–Lung Lai Chung–Mau Lo 2011Gastroenterology2011,,4:3
5Outcome analysis of management of liver trauma: A 10-year experience at a trauma center显示文摘AIM: To review the outcomes of liver trauma in patients with hepatic injuries only and in patients with associated injuries outside the liver.METHODS: Data of liver trauma patients presented to our center from January 2003 to October 2013 were reviewed. The patients were divided into two groups. Group 1 consisted of patients who had hepatic injuries only. Group 2 consisted of patients who also had associated injuries outside the liver.RESULTS: Seven(30.4%) patients in group 1 and 10(28.6%) patients in group 2 received non-operative management; the rest underwent operation. Blunt trauma occurred in 82.8%(48/58) of the patients and penetrative trauma in 17.2%(10/58). A higher injury severity score(ISS) was observed in group 2(median 45 vs 25, P < 0.0001). More patients in group 1 were hemodynamically stable(65.2% vs 37.1%, P = 0.036). Other parameters were comparable between groups. Group 1 had better 30-d survival(91.3% vs 71.4%, P = 0.045). On multivariate analysis using the logistic regression model, ISS was found to be associated with mortality(P = 0.004, hazard ratio = 1.035, 95%CI:CONCLUSION: Liver trauma patients with multiple injuries are relatively unstable on presentation. Despite a higher ISS in group 2, non-operative management was possible for selected patients. Associated injuries outside the liver usually account for morbidity and mortality.Wong Hoi She Tan To Cheung Wing Chiu Dai Simon HY Tsang Albert CY Chan Daniel KH Tong Gilberto KK Leung Chung Mau Lo 2016World Journal of Hepatology2016,8,15:3
6Survival analysis of breast cancer liver metastasis treated by hepatectomy: A propensity score analysis for Chinese women in Hong Kong显示文摘Background: Survival of patients with breast cancer liver metastasis is very poor. This study aimed to analyze the survival outcome of hepatectomy for this patient population. Methods: From January 1995 to December 2014, 2522 patients with liver cancer received hepatectomy at our hospital. Twenty-one of them, all female, received the operation for breast cancer liver metastasis. Performance was compared with patients with colorectal liver metastasis treated with hepatectomy after propensity score analysis in a ratio of 1:3. Results: Twenty-one patients received hepatectomy for breast cancer. After propensity score matching, 63 patients who had hepatectomy for colorectal cancer were selected for comparison. There was no significant difference in immediate or short-term outcomes between the two groups of patients in terms of operative time, blood loss and surgical morbidities. All patients with breast cancer had R0 resection. No hospital death occurred. After hepatectomy, the 1-, 3- and 5-year overall survival rates were 100.0%, 58.9% and 58.9% respectively in patients with breast cancer. The 1-, 3- and 5-year overall survival rates were 95.0%, 57.2% and 39.7% respectively in patients with colorectal cancer (P = 0.572). On multivariate analysis, triple negative status was the only independent poor prognostic factor in breast cancer liver metastasis (OR = 6.411;95% CI: 1.351–30.435;P = 0.019). Conclusions: Hepatectomy is a safe and effective way of treating breast cancer liver metastasis at experienced centers where multidisciplinary adjuvant treatments are available. It can be considered more frequently as part of the multidisciplinary care for this patient population.Tan To Cheung Kenneth SH Chok Albert CY Chan Simon HY Tsang Wing Chiu Dai Thomas CC Yau Ava Kwong Chung Mau Lo 2019Hepatobiliary & Pancreatic Diseases International2019,18,5:3
7Aberrant cholesterol metabolic signaling impairs antitumor immunosurveillance through natural killer T cell dysfunction in obese liver显示文摘Obesity is a major risk factor for cancers including hepatocellular carcinoma(HCC)that develops from a background of non-alcoholic fatty liver disease(NAFLD).Hypercholesterolemia is a common comorbidity of obesity.Although cholesterol biosynthesis mainly occurs in the liver,its role in HCC development of obese people remains obscure.Using high-fat high-carbohydrate diet-associated orthotopic and spontaneous NAFLD-HCC mouse models,we found that hepatic cholesterol accumulation in obesity selectively suppressed natural killer T(NKT)cell-mediated antitumor immunosurveillance.Transcriptome analysis of human liver revealed aberrant cholesterol metabolism and NKT cell dysfunction in NAFLD patients.Notably,cholesterol-lowering rosuvastatin restored NKT expansion and cytotoxicity to prevent obesogenic diet-promoted HCC development.Moreover,suppression of hepatic cholesterol biosynthesis by a mammalian target of rapamycin(mTOR)inhibitor vistusertib preceded tumor regression,which was abolished by NKT inactivation but not CD8^(+)T cell depletion.Mechanistically,sterol regulatory element-binding protein 2(SREBP2)-driven excessive cholesterol production from hepatocytes induced lipid peroxide accumulation and deficient cytotoxicity in NKT cells,which were supported by findings in people with obesity,NAFLD and NAFLD-HCC.This study highlights mTORC1/SREBP2/cholesterol-mediated NKT dysfunction in the tumor-promoting NAFLD liver microenvironment,providing intervention strategies that invigorating NKT cells to control HCC in the obesity epidemic.Wenshu Tang Jingying Zhou Weiqin Yang Yu Feng Haoran Wu Myth T.S.Mok Lingyun Zhang Zhixian Liang Xiaoyu Liu Zhewen Xiong Xuezhen Zeng Jing Wang Jiahuan Lu Jingqing Li Hanyong Sun Xiaoyu Tian Philip Chun Yeung Yong Hou Heung Man Lee Candice C.H.Lam Howard H.W.Leung Anthony W.H.Chan Ka Fai To John Wong Paul B.S.Lai Kelvin K.C.Ng Simon K.H.Wong Vincent W.S.Wong Alice P.S.Kong Joseph J.Y.Sung Alfred S.L.Cheng 2022Cellular & Molecular Immunology2022,19,7:3
8The impact of family history of hepatocellular carcinoma on its patients' survival显示文摘BACKGROUND:Family history of hepatocellular carcinoma(HCC) has been identified as a risk factor for the development of the disease.The aim of this study is to evaluate the impact of such a history on HCC patients' survival.METHODS:Data of all HCC patients(n=4532) managed at our center from 1989 to 2008 were prospectively collected.The patients were quizzed on their various characteristics including family HCC history.RESULTS:Totally 475(10.48%) patients had a family history of HCC.They presented the disease at a significantly earlier age(median 53 vs 59 years,P<0.0001) and at an earlier stage(the United Network for Organ Sharing staging system).They had significantly better liver function in terms of ChildPugh classification and serum albumin and bilirubin levels.Significantly more of them presented the disease without symptoms(44.0% vs 29.4%,P<0.0001).They also had significantly better overall survival under these specifications:patients in the whole study cohort,patients who had minor hepatectomy,patients with stage I disease,patients with stage II disease,and patients with stage III disease.CONCLUSIONS:Contrary to what is generally believed,we found in this study cohort that patients with a family history of HCC had better overall survival than those without such a history.We believe this was in part due to earlier diagnosis of the disease and better liver function in this group of patients.However,the effects of genetic factors on the risk of HCC cannot be overlooked and are yet to be identified.Wing Chiu Dai Sheung Tat Fan Tan To Cheung Kenneth SH Chok Albert CY Chan Simon HY Tsang Ronnie TP Poon Chung Mau Lo 2012Hepatobiliary & Pancreatic Diseases International2012,11,2:2
9Retrohepatic vena cava deroofing in living donor liver transplantation for caudate hepatocellular carcinoma显示文摘The removal of tumor together with the native liver in living donor liver transplantation for hepatocellular carcinoma is challenged by a very close resection margin if the tumor abuts the inferior vena cava.This is in contrast to typical deceased donor liver transplantation where the entire retrohepatic inferior vena cava is included in total hepatectomy.Here we report a case of deroofing the retrohepatic vena cava in living donor liver transplantation for caudate hepatocellular carcinoma.In order to ensure clear resection margins,the anterior portion of the inferior vena cava was included.The right liver graft was inset into a Dacron vascular graft on the back table and the composite graft was then implanted to the recipient inferior vena cava.Using this technique,we observed the no-touch technique in tumor removal,hence minimizing the chance of positive resection margin as well as the chance of shedding of tumor cells during manipulation in operation.See Ching Chan William W Sharr Tan To Cheung Albert CY Chan Simon HY Tsang Kenneth SH Chok Kin Chung Leung Chung Mau Lo 2013Hepatobiliary & Pancreatic Diseases International2013,12,5:2
10Infection rates following initial cerebrospinal fluid shunt placement across pediatric hospitals in the United States显示文摘Simon TO Hall M Riva-Cambrin 1 20091 Neurosurg Pediatr2009,4,2:1
11Inotrope in the beta-blocker era显示文摘Lowes BD Simon MA Tsvetkova TO 2000Clin Cardiol2000,23,3:1
12Entecavir Monotherapy Is Effective in Suppressing Hepatitis B Virus After Liver Transplantation显示文摘James Fung Cindy Cheung See–Ching Chan Man–Fung Yuen Kenneth S.H. Chok William Sharr Wing–Chiu Dai Albert C.Y. Chan Tan–To Cheung Simon Tsang Banny Lam Ching–Lung Lai Chung–Mau Lo 2011Gastroenterology2011,,4:1
13Entecavir Monotherapy Is Effective in Suppressing Hepatitis B Virus After Liver Transplantation显示文摘James Fung Cindy Cheung See–Ching Chan Man–Fung Yuen Kenneth S.H. Chok William Sharr Wing–Chiu Dai Albert C.Y. Chan Tan–To Cheung Simon Tsang Banny Lam Ching–Lung Lai Chung–Mau Lo 2011Gastroenterology2011,,4:1
14Inotropes in the beta-blocker era显示文摘LOWES BD SIMON MA TSVETKOVA TO 2000Clin Cardiol2000,23,3:1
15Maternal second-hand smoke exposure in pregnancy is associated with childhood asthma development显示文摘Simons E To T Moineddin R 2014J Allergy Clin Immunol Pract2014,2,:1
16Outcome of laparoscopic versus open hepatectomy for colorectal liver metastases显示文摘Tan To Cheung Ronnie T. P. Poon Wai Key Yuen Kenneth S. H. Chok Simon H. Y. Tsang Thomas Yau See Ching Chan Chung Mau Lo 2013ANZ J Surg2013,,11:1
17显示文摘SHMULOVICH K I LANDWEHR D SIMON K Stable isotope fractionation between liquid and vapour in water-salt systemsup to 600 1999Chemical Geology1999,157,:1
18Late retroperitoneal recurrence of hepatocellular carcinoma 12 years after initial diagnosis显示文摘Hepatocellular carcinoma (HCC) is an aggressive tumor with poor long-term prognosis.Here,we present an unusual patient with a solitary recurrence of HCC in the right kidney 12 years after the initial diagnosis.This illustrates the importance of considering late recurrence in patients with a history of HCC and the management of these metastases.Tiffany Cho-Lam Wong Ka-Fai To Simon See-Ming Hou Sidney Kam-Hung Yip Chi-Fai Ng 2010World Journal of Gastroenterology2010,16,17:0
19Post-fontan circulation hepatocellular carcinoma:Open and laparoscopic hepatectomy显示文摘To the Editor:Fontan-associated liver disease shows increasing incidence as advances in pediatric cardiology have prolonged life expectancy in patients with single ventricle congenital heart defects[1].Their unique physiology and procedure-related sequelae present an increasingly relevant challenge in hepatic surgery.We hereby reported a series of patients suffering from hepatocellular carcinoma(HCC)who successfully underwent open and laparoscopic hepatectomy.Karin KY Ho Wong Hoi She Simon HY Tsang Kevin S Lo Tan To Cheung 2024Hepatobiliary & Pancreatic Diseases International2024,23,1:0
20Clinical outcome measures in dementia with Lewy bodies trials: critique and recommendations显示文摘The selection of appropriate outcome measures is fundamental to the design of any successful clinical trial. Although dementia with Lewy bodies (DLB) is one of the most common neurodegenerative conditions, assessment of therapeutic benefit in clinical trials often relies on tools developed for other conditions, such as Alzheimer’s or Parkinson’s disease. These may not be sufficiently valid or sensitive to treatment changes in DLB, decreasing their utility. In this review, we discuss the limitations and strengths of selected available tools used to measure DLB-associated outcomes in clinical trials and highlight the potential roles for more specific objective measures. We emphasize that the existing outcome measures require validation in the DLB population and that DLB-specific outcomes need to be developed. Finally, we highlight how the selection of outcome measures may vary between symptomatic and disease-modifying therapy trials.Federico Rodriguez-Porcel Kathryn A.Wyman-Chick Carla Abdelnour Ruiz Jon B.Toledo Daniel Ferreira Prabitha Urwyler Rimona S.Weil Joseph Kane Andrea Pilotto Arvid Rongve Bradley Boeve John-Paul Taylor Ian McKeith Dag Aarsland Simon J.G.Lewis the Lewy Body Dementias Clinical Trials Workgroup from the Lewy Body Dementias Professional Interest Area-Alzheimer’s Association International Society to Advance Alzheimer’s Research and Treatment(ISTAART) 2022Translational Neurodegeneration2022,11,1:0
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