Cholangiocarcinoma(CCA) is a malignant tumour that arises from biliary epithelium at any portion of the biliary tree.CCA is currently classified as intra-hepatic or extra-hepatic CCA(EH-CCA).Recent evidences suggest t...Cholangiocarcinoma(CCA) is a malignant tumour that arises from biliary epithelium at any portion of the biliary tree.CCA is currently classified as intra-hepatic or extra-hepatic CCA(EH-CCA).Recent evidences suggest that intra-hepatic CCA(IH-CCA) and EH-CCA are biologically different cancers,giving further support to a number of recent epidemiological studies showing large differences in terms of incidence,mortality and risk factors.The purpose of this manuscript is to review recent literature dealing with the descriptive epidemiology and risk factors of CCA with a special effort to compare IH-with EH-CCA.展开更多
BACKGROUND Duodenal varices are a lesser-known complication with non-cirrhotic portal hypertension. We report a circuitous route from missed diagnosis of duodenal varices to correction. An extremely rare case of duode...BACKGROUND Duodenal varices are a lesser-known complication with non-cirrhotic portal hypertension. We report a circuitous route from missed diagnosis of duodenal varices to correction. An extremely rare case of duodenal variceal bleeding secondary to idiopathic portal hypertension(IPH) is expounded in this study, which was controlled by transjugular intra-hepatic porto-systemic shunt(TIPS) plus embolization. CASE SUMMARY A 46-year-old woman with anemia for two years was frequently admitted to the local hospital. Upon examination, anemia was attributed to gastrointestinal tract bleeding, which resulted from duodenal variceal bleeding detected by repeated esophagogastroduodenoscopy. At the end of a complete workup, IPH leadingto duodenal varices was diagnosed. Portal venography revealed that the remarked duodenal varices originated from the proximal superior mesenteric vein. TIPS plus embolization with coils and Histoacryl was performed to obliterate the rupture of duodenal varices. The anemia resolved, and the duodenal varices completely vanished by 2 mo after the initial operation. CONCLUSION TIPS plus embolization may be more appropriate to treat the bleeding of large duodenal varices.展开更多
Generalized biliary peritonitis is a serious intra-abdominal emergency. Most of them occur due to duodenal ulcer perforation and rapidly evolve into bacterial peritonitis due to contamination by gut organisms and food...Generalized biliary peritonitis is a serious intra-abdominal emergency. Most of them occur due to duodenal ulcer perforation and rapidly evolve into bacterial peritonitis due to contamination by gut organisms and food. In this situation, recognition of the pathology and its treatment is straightforward and is usually associated with a good outcome. There are a few unusual causes of biliary peritonitis, of which rupture of the biliary tree is one.We describe a rare case of biliary peritonitis due to rupture of an intra-hepatic biliary radical. Unusual causes of peritonitis do interrupt our daily routine emergency surgical experience. Rapid recognition of the presence of peritonitis, adequate resuscitation, recognition of operative findings, establishment of biliary anatomy, and performance of a meticulous surgical procedure resulted in a good outcome.展开更多
BACKGROUND In the classic descriptions of the human liver,the common hepatic duct forms at the confluence of left and right hepatic ducts.Many authors have documented variations in the intra-hepatic ductal system,but ...BACKGROUND In the classic descriptions of the human liver,the common hepatic duct forms at the confluence of left and right hepatic ducts.Many authors have documented variations in the intra-hepatic ductal system,but to the best of our knowledge there has been no report on bile duct variations in Caribbean populations.AIM To evaluate the variations in bile duct anatomy using magnetic resonance cholangiography(MRC)in unselected patients at a major hepatobiliary referral centre in the Eastern Caribbean.Knowledge of the intra-hepatic biliary anatomy is important to optimize service delivery for any physician treating liver and biliary disorders.METHODS This study was carried out at a tertiary referral hospital for hepatobiliary diseases in the Eastern Caribbean.We retrospectively evaluated magnetic resonance cholangiograms in 152 consecutive patients at this facility over a two-year period from April 1,2017 to March 31,2019.Two consultant radiologists experienced in MRC interpretation reviewed all scans and described biliary anatomy according to the Huang’s classification.A systematic review of published studies was performed and relevant data were extracted in order to calculate the global prevalence of each biliary variant.The variants in our population were compared to the global population.RESULTS There were 152 MRCs evaluated in this study in 86 males and 66 females.There were 109(71.7%)persons with“classic”biliary anatomy(type A1)and variants were present in 43(28.3%)persons.There was no statistical relationship between the presence of anatomic variants and gender or ethnicity.We encountered the following variants:29(19.1%)type A2,7(4.6%)type A3,6(3.95%)type A4,0 type A5 and a single variant(quadrification)that did not fit the classification system.Compared to the global prevalence,our population had a significantly greater occurrence of A1 anatomy(71.7%vs 62.6%;P=0.0227)and A2 trifurcations(19.1%vs 11.5%;P=0.0069),but a significantly lower incidence of A3 variants(4.61%vs 11.5%;P=0.0047).CONCLUSION There are significant differences in intra-hepatic biliary anatomy in this unselected Eastern Caribbean population compared to global statistics.Specifically,persons of Caribbean descent have a greater incidence of Huang A2 trifurcations and a lower incidence of Huang A3 variants.展开更多
In patients with metastatic colorectal cancer, the liver is the most common site of metastatic disease. In patients with liver-dominant disease, consideration needs to be given to locoregional treatments such as hepat...In patients with metastatic colorectal cancer, the liver is the most common site of metastatic disease. In patients with liver-dominant disease, consideration needs to be given to locoregional treatments such as hepatic arterial infusion chemotherapy, transarterial chemoembolisation and selective internal radiation therapy because hepatic metastases are a major cause of liver failure especially in chemorefractory disease. In this review we provide insights on the published literature for locoregional treatment of liver metastases in metastatic colorectal cancer.展开更多
Background:The effect of transjugular intra-hepatic portosystemic shunt(TIPS)placement on renal function and the correlation of post-TIPS Cr with mortality remain unclear.This study aimed to assess the effect of TIPS ...Background:The effect of transjugular intra-hepatic portosystemic shunt(TIPS)placement on renal function and the correlation of post-TIPS Cr with mortality remain unclear.This study aimed to assess the effect of TIPS placement on renal function and to examine the relationship between post-TIPS Cr and mortality risk.Methods:A total of 593 patients who underwent de novo TIPS placement between 2004 and 2017 at a single institution were included in the study.The pre-TIPS Cr level(T0;within 7 days before TIPS placement)and post-TIPS Cr levels,at 1–2 days(T1),5–12 days(T2),and 15–40 days(T3),were collected.Predictors of Cr change after TIPS placement and the 1-year mortality rate were analysed using multivariable linear-regression and Cox proportional-hazards models,respectively.Results:Overall,21.4%of patients(n=127)had elevated baseline Cr(≤1.5 mg/dL;mean,2.5161.49 mg/dL)and 78.6%(n=466)had normal baseline Cr(<1.5 mg/dL;mean,0.9260.26 mg/dL).Patients with elevated pre-TIPS Cr demonstrated a decrease in post-TIPS Cr(difference,-0.60 mg/dL),whereas patients with normal baseline Cr exhibited no change(difference,<0.01 mg/dL).The 30-day,90-day,and 1-year mortality rates were 13%,20%,and 32%,respectively.Variceal bleeding as a TIPS-placement indication(hazard ratio=1.731;P=0.036),higher T0 Cr(hazard ratio=1.834;P=0.012),and higher T3 Cr(hazard ratio=3.524;P<0.001)were associated with higher 1-year mortality risk.Conclusion:TIPS placement improved renal function in patients with baseline renal dysfunction and the post-TIPS Cr level was a strong predictor of 1-year mortality risk.展开更多
AIM To review the clinical impact of machine perfusion(MP) of the liver on biliary complications post-transplantation, particularly ischaemic-type biliary lesions(ITBL). METHODS This systematic review was performed in...AIM To review the clinical impact of machine perfusion(MP) of the liver on biliary complications post-transplantation, particularly ischaemic-type biliary lesions(ITBL). METHODS This systematic review was performed in accordance with the Preferred Reporting Systematic Reviews and MetaAnalysis(PRISMA) protocol. The following databases were searched: PubMed, MEDLINE and Scopus. The keyword "liver transplantation" was used in combination with the free term "machine perfusion". Clinical studies reporting results of transplantation of donor human livers following ex situ or in situ MP were analysed. Details relating to donor characteristics, recipients, technique of MP performed and post-operative biliary complications(ITBL, bile leak and anastomotic strictures) were critically analysed.RESULTS Fifteen articles were considered to fit the criteria for this review. Ex situ normothermic MP was used in 6 studies, ex situ hypothermic MP in 5 studies and the other 4 studies investigated in situ normothermic regional perfusion(NRP) and controlled oxygenated rewarming. MP techniques which have per se the potential to alleviate ischaemia-reperfusion injury: Such as hypothermic MP and NRP, have also reported lower rates of ITBL. Other biliary complications, such as biliary leak and anastomotic biliary strictures, are reported with similar incidences with all MP techniques. There is currently less clinical evidence available to support normothermic MP as a mitigator of biliary complications following liver transplantation. On the other hand, restoration of organ to full metabolism during normothermic MP allows assessment of hepatobiliary function before transplantation, although universally accepted criteria have yet to be validated.CONCLUSION MP of the liver has the potential to have a positive impact on post-transplant biliary complications, specifically ITBL, and expand extended criteria donor livers utilisation.展开更多
Objective: To investigate the therapeutic effects of the murine IL-12 (mIL-12) retrovirus packaging cell line on hepatoma injected locally. Methods: The retrovirus vector encoding mIL-12 gene was constructed and trans...Objective: To investigate the therapeutic effects of the murine IL-12 (mIL-12) retrovirus packaging cell line on hepatoma injected locally. Methods: The retrovirus vector encoding mIL-12 gene was constructed and transfected into packaging cell line PA317. The cells were then used to treat the rats with experimental orthotopic hepatoma at different time. The therapeutic effects, immune functions of the hosts, pathological and toxicological responses were documented. Results: the results showed that the mIL-12 retrovirus packaging cell line could significantly inhibit the growth of the hepatoma cells injected locally to the hepatoma. The early treatment made the rats survive long, while the medium or late stage treatment could prolong the life time of the rats compared with the bland control group or bland vector control group, though the rats did not survive. The number of NK cells and T cells increased significantly in the treatment group. The effects of the early treatment were superior to those of the medium and late stage treatment. Moreover, the transfection of IL-12 gene locally in the hepatoma tissue could make the hepatoma disappear from other liver lobe. This phenomenon demonstrated that IL-12 could activate the immune cells of the host to kill the untransfected tumor cells. This is very important for IL-12 to be used in gene therapy clinically. Meanwhile, the hepatoma would not recur in the rats that had survived more than 2 months from the early treatment after being re-challenged with tumor cells. Conclusion: the results showed that IL-12 gene injected locally in the hepatoma tissue could enhance the anti-tumor immunity of the host.展开更多
Cholangiocarcinomas are primary malignant tumors of the liver that arises from the epithelium lining the small intra and extrahepatic bile ducts, and has numerous histologic types and growth patterns. At computed tomo...Cholangiocarcinomas are primary malignant tumors of the liver that arises from the epithelium lining the small intra and extrahepatic bile ducts, and has numerous histologic types and growth patterns. At computed tomography (CT) and magnetic ressonance (MR), it has various appearences which motivated the present study;we present a case within an atypical presentation. The objective is to show the variety of differential diagnoses before an atypical aspect and the importance of the imaging methods for the diagnosis. Cholangiocarcinoma is still an uncommon neoplasm, and CT and MR are crucial for accurate diagnosis and for differentiation from other hepatic tumorous and nontumorous lesions.展开更多
文摘Cholangiocarcinoma(CCA) is a malignant tumour that arises from biliary epithelium at any portion of the biliary tree.CCA is currently classified as intra-hepatic or extra-hepatic CCA(EH-CCA).Recent evidences suggest that intra-hepatic CCA(IH-CCA) and EH-CCA are biologically different cancers,giving further support to a number of recent epidemiological studies showing large differences in terms of incidence,mortality and risk factors.The purpose of this manuscript is to review recent literature dealing with the descriptive epidemiology and risk factors of CCA with a special effort to compare IH-with EH-CCA.
基金Supported by National Natural Science Foundation of China under Grant No.81503437
文摘BACKGROUND Duodenal varices are a lesser-known complication with non-cirrhotic portal hypertension. We report a circuitous route from missed diagnosis of duodenal varices to correction. An extremely rare case of duodenal variceal bleeding secondary to idiopathic portal hypertension(IPH) is expounded in this study, which was controlled by transjugular intra-hepatic porto-systemic shunt(TIPS) plus embolization. CASE SUMMARY A 46-year-old woman with anemia for two years was frequently admitted to the local hospital. Upon examination, anemia was attributed to gastrointestinal tract bleeding, which resulted from duodenal variceal bleeding detected by repeated esophagogastroduodenoscopy. At the end of a complete workup, IPH leadingto duodenal varices was diagnosed. Portal venography revealed that the remarked duodenal varices originated from the proximal superior mesenteric vein. TIPS plus embolization with coils and Histoacryl was performed to obliterate the rupture of duodenal varices. The anemia resolved, and the duodenal varices completely vanished by 2 mo after the initial operation. CONCLUSION TIPS plus embolization may be more appropriate to treat the bleeding of large duodenal varices.
文摘Generalized biliary peritonitis is a serious intra-abdominal emergency. Most of them occur due to duodenal ulcer perforation and rapidly evolve into bacterial peritonitis due to contamination by gut organisms and food. In this situation, recognition of the pathology and its treatment is straightforward and is usually associated with a good outcome. There are a few unusual causes of biliary peritonitis, of which rupture of the biliary tree is one.We describe a rare case of biliary peritonitis due to rupture of an intra-hepatic biliary radical. Unusual causes of peritonitis do interrupt our daily routine emergency surgical experience. Rapid recognition of the presence of peritonitis, adequate resuscitation, recognition of operative findings, establishment of biliary anatomy, and performance of a meticulous surgical procedure resulted in a good outcome.
文摘BACKGROUND In the classic descriptions of the human liver,the common hepatic duct forms at the confluence of left and right hepatic ducts.Many authors have documented variations in the intra-hepatic ductal system,but to the best of our knowledge there has been no report on bile duct variations in Caribbean populations.AIM To evaluate the variations in bile duct anatomy using magnetic resonance cholangiography(MRC)in unselected patients at a major hepatobiliary referral centre in the Eastern Caribbean.Knowledge of the intra-hepatic biliary anatomy is important to optimize service delivery for any physician treating liver and biliary disorders.METHODS This study was carried out at a tertiary referral hospital for hepatobiliary diseases in the Eastern Caribbean.We retrospectively evaluated magnetic resonance cholangiograms in 152 consecutive patients at this facility over a two-year period from April 1,2017 to March 31,2019.Two consultant radiologists experienced in MRC interpretation reviewed all scans and described biliary anatomy according to the Huang’s classification.A systematic review of published studies was performed and relevant data were extracted in order to calculate the global prevalence of each biliary variant.The variants in our population were compared to the global population.RESULTS There were 152 MRCs evaluated in this study in 86 males and 66 females.There were 109(71.7%)persons with“classic”biliary anatomy(type A1)and variants were present in 43(28.3%)persons.There was no statistical relationship between the presence of anatomic variants and gender or ethnicity.We encountered the following variants:29(19.1%)type A2,7(4.6%)type A3,6(3.95%)type A4,0 type A5 and a single variant(quadrification)that did not fit the classification system.Compared to the global prevalence,our population had a significantly greater occurrence of A1 anatomy(71.7%vs 62.6%;P=0.0227)and A2 trifurcations(19.1%vs 11.5%;P=0.0069),but a significantly lower incidence of A3 variants(4.61%vs 11.5%;P=0.0047).CONCLUSION There are significant differences in intra-hepatic biliary anatomy in this unselected Eastern Caribbean population compared to global statistics.Specifically,persons of Caribbean descent have a greater incidence of Huang A2 trifurcations and a lower incidence of Huang A3 variants.
文摘In patients with metastatic colorectal cancer, the liver is the most common site of metastatic disease. In patients with liver-dominant disease, consideration needs to be given to locoregional treatments such as hepatic arterial infusion chemotherapy, transarterial chemoembolisation and selective internal radiation therapy because hepatic metastases are a major cause of liver failure especially in chemorefractory disease. In this review we provide insights on the published literature for locoregional treatment of liver metastases in metastatic colorectal cancer.
文摘Background:The effect of transjugular intra-hepatic portosystemic shunt(TIPS)placement on renal function and the correlation of post-TIPS Cr with mortality remain unclear.This study aimed to assess the effect of TIPS placement on renal function and to examine the relationship between post-TIPS Cr and mortality risk.Methods:A total of 593 patients who underwent de novo TIPS placement between 2004 and 2017 at a single institution were included in the study.The pre-TIPS Cr level(T0;within 7 days before TIPS placement)and post-TIPS Cr levels,at 1–2 days(T1),5–12 days(T2),and 15–40 days(T3),were collected.Predictors of Cr change after TIPS placement and the 1-year mortality rate were analysed using multivariable linear-regression and Cox proportional-hazards models,respectively.Results:Overall,21.4%of patients(n=127)had elevated baseline Cr(≤1.5 mg/dL;mean,2.5161.49 mg/dL)and 78.6%(n=466)had normal baseline Cr(<1.5 mg/dL;mean,0.9260.26 mg/dL).Patients with elevated pre-TIPS Cr demonstrated a decrease in post-TIPS Cr(difference,-0.60 mg/dL),whereas patients with normal baseline Cr exhibited no change(difference,<0.01 mg/dL).The 30-day,90-day,and 1-year mortality rates were 13%,20%,and 32%,respectively.Variceal bleeding as a TIPS-placement indication(hazard ratio=1.731;P=0.036),higher T0 Cr(hazard ratio=1.834;P=0.012),and higher T3 Cr(hazard ratio=3.524;P<0.001)were associated with higher 1-year mortality risk.Conclusion:TIPS placement improved renal function in patients with baseline renal dysfunction and the post-TIPS Cr level was a strong predictor of 1-year mortality risk.
基金supported by the NIHR Birmingham Biomedical Research Centre at the University Hospitals Birmingham NHS Foundation Trustthe University of Birmingham
文摘AIM To review the clinical impact of machine perfusion(MP) of the liver on biliary complications post-transplantation, particularly ischaemic-type biliary lesions(ITBL). METHODS This systematic review was performed in accordance with the Preferred Reporting Systematic Reviews and MetaAnalysis(PRISMA) protocol. The following databases were searched: PubMed, MEDLINE and Scopus. The keyword "liver transplantation" was used in combination with the free term "machine perfusion". Clinical studies reporting results of transplantation of donor human livers following ex situ or in situ MP were analysed. Details relating to donor characteristics, recipients, technique of MP performed and post-operative biliary complications(ITBL, bile leak and anastomotic strictures) were critically analysed.RESULTS Fifteen articles were considered to fit the criteria for this review. Ex situ normothermic MP was used in 6 studies, ex situ hypothermic MP in 5 studies and the other 4 studies investigated in situ normothermic regional perfusion(NRP) and controlled oxygenated rewarming. MP techniques which have per se the potential to alleviate ischaemia-reperfusion injury: Such as hypothermic MP and NRP, have also reported lower rates of ITBL. Other biliary complications, such as biliary leak and anastomotic biliary strictures, are reported with similar incidences with all MP techniques. There is currently less clinical evidence available to support normothermic MP as a mitigator of biliary complications following liver transplantation. On the other hand, restoration of organ to full metabolism during normothermic MP allows assessment of hepatobiliary function before transplantation, although universally accepted criteria have yet to be validated.CONCLUSION MP of the liver has the potential to have a positive impact on post-transplant biliary complications, specifically ITBL, and expand extended criteria donor livers utilisation.
基金the major project grant from the National Natural Science Foundation of China (No.39730440) the National Natural Science
文摘Objective: To investigate the therapeutic effects of the murine IL-12 (mIL-12) retrovirus packaging cell line on hepatoma injected locally. Methods: The retrovirus vector encoding mIL-12 gene was constructed and transfected into packaging cell line PA317. The cells were then used to treat the rats with experimental orthotopic hepatoma at different time. The therapeutic effects, immune functions of the hosts, pathological and toxicological responses were documented. Results: the results showed that the mIL-12 retrovirus packaging cell line could significantly inhibit the growth of the hepatoma cells injected locally to the hepatoma. The early treatment made the rats survive long, while the medium or late stage treatment could prolong the life time of the rats compared with the bland control group or bland vector control group, though the rats did not survive. The number of NK cells and T cells increased significantly in the treatment group. The effects of the early treatment were superior to those of the medium and late stage treatment. Moreover, the transfection of IL-12 gene locally in the hepatoma tissue could make the hepatoma disappear from other liver lobe. This phenomenon demonstrated that IL-12 could activate the immune cells of the host to kill the untransfected tumor cells. This is very important for IL-12 to be used in gene therapy clinically. Meanwhile, the hepatoma would not recur in the rats that had survived more than 2 months from the early treatment after being re-challenged with tumor cells. Conclusion: the results showed that IL-12 gene injected locally in the hepatoma tissue could enhance the anti-tumor immunity of the host.
文摘Cholangiocarcinomas are primary malignant tumors of the liver that arises from the epithelium lining the small intra and extrahepatic bile ducts, and has numerous histologic types and growth patterns. At computed tomography (CT) and magnetic ressonance (MR), it has various appearences which motivated the present study;we present a case within an atypical presentation. The objective is to show the variety of differential diagnoses before an atypical aspect and the importance of the imaging methods for the diagnosis. Cholangiocarcinoma is still an uncommon neoplasm, and CT and MR are crucial for accurate diagnosis and for differentiation from other hepatic tumorous and nontumorous lesions.
