Treatment and prevention of ischemic-type biliary lesions after liver transplantation in the donation after cardiac death era / 中华消化外科杂志

Biliary complications, especially the ischemic-type biliary lesions (ITBL), are the main causes of mortality and retransplantation for patients undergoing liver transplantation. In recent years, the application of marginal donor livers such as livers from donor of cardiac death and fatty liver leads to high incidence of ITBL. As a result, the treatment and prevention of ITBL after liver transplantation become a research hotspot. Based on the global research progress and the clinical experience of their liver transplantation center, the authors investigate the treatment and prevention of ITBL after liver transplantation in the donation after cardiac death era.

The impact of aging on post-ERCP pancreatitis and its severity / 中华肝胆外科杂志

Objective@#To study the impact of aging on pancreatic atrophy, fibrosis and exocrine hypofunction in patients with post-ERCP pancreatitis (PEP) and its severity.@*Methods@#A retrospective study was conducted on 786 patients who underwent ERCP at the Affiliated Zhongshan Hospital of Dalian University from June 2011 to April 2018. Patients who were aged over 75 years were grouped into the elderly group while those aged less than 75 years were grouped into the younger group. The incidences and severity of post-ERCP pancreatitis in the two groups were analyzed.@*Results@#In the elderly group, there were 308 patients. The average age was (81.8±4.8) years. In the younger group, there were 478 patients. The average age was (57.7±12.0) years. The average operation time for the elderly group was (52.5±14.1) minutes, and that for the younger group was (50.7±14.9) minutes. There were no significant differences in operation time and in the related factors between the two groups (P>0.05). There was no significant difference in the rates of hyperamylasemia between the two groups (29.9% vs 30.1%, P>0.05). The overall rate of PEP was 11.3% (89/786). In the elderly group, the rate of PEP was 6.5% (20/308), which was significantly lower than that in the younger group (χ2=11.765, P<0.05). The rates of mild, moderate and severe PEP in the elderly group was significantly lower than those in the younger group (all P<0.05). Hyperamylasemia and pancreatitis in the 2 groups were alleviated after conservative treatment.@*Conclusions@#Aging (≥75 years) resulted in pancreatic atrophy, fibrosis, exocrine hypofunction which had a protective effect on PEP.

The impact of aging on post-ERCP pancreatitis and its severity / 中华肝胆外科杂志

0bjective To study the impact of aging on pancreatic atrophy,fibrosis and exocrine hy-pofunction in patients with post.ERCP pancreatitis(PEP)and its severity.Methods A retrospective study was conducted on 786 patients who underwent ERCP at the Affiliated Zhongshan Hospital of Dalian Universi-ty from June 201 1 to April 2018.Patients who were aged over 75 years were grouped into the elderly group while those aged less than 75 years were grouped into the younger group.The incidences and severity of post-ERCP pancreatitis in the two groups were analyzed.Results In the elderly group,there were 308 patients.The average age was(8 1.8±4.8)years.In the younger group,there were 478 patients.The average age was(57.7±12.0)years.The average operation time for the elderly group was(52.5±14.1)minutes,and that for the younger group was(50.7±14.9)minutes.There were no significant differences in opera-tion time and in the related factors between the two groups(P＞0.05).There was no significant difference in the rates of hyperamylasemia between the two groups(29.9％vs 30.1％,P＞0.05).The overall rate of PEP was 11.3％(89/786).In the elderly group,the rate of PEP was6.5％(20/308),which was signifi-cantly lower than that in the younger group(x2=11.765,P＜0.05).The rates of mild,moderate and severe PEP in the elderly group was significantly lower than those in the younger group(all P＜0.05).Hyperamylasemia and pancreatitis in the 2 groups were alleviated after conservative treatment.Conclusions Aging(≥75 years)resulted in pancreatic atrophy,fibrosis,exocrine hypofunction which had a protective effect on PEP.

The Role of Peroral Cholangioscopy in Evaluating Indeterminate Biliary Strictures

Biliary strictures are considered indeterminate when the initial radiologic evaluation and endoscopic retrograde cholangiopancreatography with brush cytology and/or forceps biopsy do not reveal diagnostic findings. Evaluation of these strictures is challenging and often requires a multidisciplinary approach and multiple procedures. Peroral cholangioscopy allows direct visualization of these lesions and targeted tissue acquisition using miniature biopsy forceps. In the past decade, there have been significant improvements in the field of cholangioscopy. These advances have allowed higher-quality image acquisition, easy setup, operation by a single operator, easy maneuverability, and excellent targeted tissue sampling performance. However, the interpretation of cholangioscopic visual findings remains challenging. In this review, we discuss the role of peroral cholangioscopy in the evaluation of indeterminate biliary strictures.

Novel Non-Surgical Interventions for Benign Inflammatory Biliary Strictures in Infants: A Report of Two Cases and Review of Current Pediatric Literature / 대한소아소화기영양학회지

Benign biliary strictures are uncommon in children. Classically, these cases are managed surgically, however less invasive approaches with interventional radiology and or endoscopy may have similar results and improved safety profiles While benign biliary strictures have been described in literature on several occasions in young children, (most older than 1 year and once in an infant 3 months of age), all reported cases were managed surgically. We present two cases of benign biliary strictures in infants less than 6 months of age that were managed successfully with novel non-invasive procedures and a review of all current pediatric cases reported in the literature. Furthermore, we describe the use of a Rendezvous procedure, which has not been reported as a treatment approach for benign biliary strictures.

Research progress on machine perfusion to reduce the incidence of non-anastomotic biliary stricture after liver trans-plantation / 中华肝胆外科杂志

Liver transplantation has become the most effective treatment for end-stage liver diseases.Due to the shortage of organ,more and more extended criteria donors (ECD) grafts had been used,which expand the liver pool.However,a series of complications post transplantation were caused by ischemia,hypoxia,steatosis and so on.The non-anastomotic biliary strictures after liver transplantation is one of the major complications when the ECD donors was be used in clinic.The study on the protective effect of machine perfusion on liver donors is too numerous to list,and existing studies have found that MP can reduce the incidence of NAS after liver transplantation.This review provides an overview of the pathogenesis of NAS and the reduction incidence of NAS by MP.

The Wire-Grasping Method as a New Technique for Forceps Biopsy of Biliary Strictures: A Prospective Randomized Controlled Study of Effectiveness

BACKGROUND/AIMS: Transpapillary forceps biopsy is an effective diagnostic technique in patients with biliary stricture. This prospective study aimed to determine the usefulness of the wire-grasping method as a new technique for forceps biopsy. METHODS: Consecutive patients with biliary stricture or irregularities of the bile duct wall were randomly allocated to either the direct or wire-grasping method group. In the wire-grasping method, forceps in the duodenum grasps a guide-wire placed into the bile duct beforehand, and then, the forceps are pushed through the papilla without endoscopic sphincterotomy. In the direct method, forceps are directly pushed into the bile duct alongside a guide-wire. The primary endpoint was the success rate of obtaining specimens suitable for adequate pathological examination. RESULTS: In total, 32 patients were enrolled, and 28 (14 in each group) were eligible for analysis. The success rate was significantly higher using the wire-grasping method than the direct method (100% vs 50%, p=0.016). Sensitivity and accuracy for the diagnosis of cancer were comparable in patients with the successful procurement of biopsy specimens between the two methods (91% vs 83% and 93% vs 86%, respectively). CONCLUSIONS: The wire-grasping method is useful for diagnosing patients with biliary stricture or irregularities of the bile duct wall.

Diagnóstico y tratamiento de las complicaciones biliares asociadas al trasplante hepático / Diagnosis and treatment of biliary complications associated with liver transplantation

Las complicaciones biliares se presentan en 10 - 25% de los pacientes que reciben un trasplante hepático y pueden causar una importante morbilidad e incluso la pérdida del injerto. Las complicaciones más comunes son la estenosis biliar (anastomótica y no anastomótica), fuga biliar y litiasis biliar. La gran mayoría de estas complicaciones puede tratarse con éxito mediante colangiopancreatografía retrógrada endoscópica. Esta revisión se centra en el diagnóstico, factores de riego y tratamiento endoscópico de las complicaciones biliares asociadas al trasplante hepático

Biliary complications ocurr in 10 - 25% of liver transplant recipients and are associated to a significant morbidity and the possibility of graft failure. The most common biliary complications are strictures (both anastomotic and non-anastomotic), bile leaks and stones. Most of these complications can be appropriately managed with endoscopic retrograde cholangiopancreatography. This article will review the diagnosis, risk factors, and endoscopic management of biliary complications related to liver transplantation

A clinical observation of percutaneous balloon dilation and maintenance percutaneous transhepatic cholangial catheter drainage for treatment of 21 patients with benign biliary strictures and difficult endoscopy / 中华内科杂志

Objective To investigate the value of percutaneous balloon dilation and percutaneous transhepatic cholangial drainage (PTCD) catheter maintenance in the treatment of benign biliary strictures.Methods The clinical data of 21 patients with benign biliary strictures at Peking Union Medical College Hospital from June 2005 to June 2011 were retrospectively studied,in which 12 patients in severe stricture (stenosis ＞ 70％ ) were treated with percutaneous balloon dilation and PTCD catheter placed across the stricture,while another 9 patients in median stricture( stenosis ＜ 70％ ) were only treated with PTCD catheter maintenance.Results Of the 12 patients underwent balloon dilation and 6-12 months ( median:9 months)of PTCD catheter placement,11 patients had the catheter successfully removed.In the follow-up of 6-24months ( median:10 months),patency of bile duct was preserved in 9 of 11 patients,and recurrent stenosis was seen in 2 patients.A severe complication with biliary artery branch rupture and massive hemobilia was seen in 1 patient during balloon dilation.Of the 9 patients only treated with 1-12 months (median:6months) of PTCD catheter placement,7 patients had the catheter successfully removed.In the follow-up of 5-18 months (median:8 months),patency of bile duct was preserved in 5 of 7 patients,and recurrent stenosis was seen in 2 patients.No severe complication occurred.Conclusions When endoscopy therapy is failed or the patient can't undergo endoscopy therapy,the percutaneous balloon dilation and PTCD catheter maintenance method is an effective alternative therapeutic approach in the treatment of benign biliary strictures.The moderate benign biliary stricture may be effectively treated only by the PTCD catheter maintenance method.

Surgical treatment of iatrogenic traumatic biliary stricture / 中华消化外科杂志

Iatrogenic traumatic biliary stricture is one of the difficult points in the biliary surgery,and operation is the only definitive treatment. The operative opportunity,surgical procedure and techniques are important for the prognosis.From January 1998 to December 2011,173 patients with iatrogenic traumatic stricture were admitted to the Eastern Hepatobiliary Surgery Hospital. According to the Bismuth classification of traumatic biliary stricture,10 patients were in type Ⅰ,22 in type Ⅱ,87 in type Ⅲ,38 in type Ⅳ and 16 in type Ⅴ.Excision of the traumatic stricture with end-to-end anastomosis was performed on 19 patients.Of the 173 patients,154 were treated by Roux-en-Y duodenojejunostomy, and 8 of them received additional hemihepatectomy or partial hepatectomy.A total of 155patients were followed up,with a median time of 74 months,the total excellent and good rate was 94.8％ ( 147/155 ).Surgery is the most effective therapy for iatrogenic traumatic biliary stricture. Optimal timing, reasonable surgical methods, strictly following the principle of biliary surgery and perfect operative skills are key points for a better prognosis.

Surgical treatment for iatrogenic biliary stricture with severe abdominal infection / 中华消化外科杂志

Biliary stricture after cholecystectomy poses difficult management problems to surgeons because of high and stable incidence.In contrast to malignant stricture,benign stricture requires durable repair.Repeated operations may not only increase the suffering of the patient,but also reduce the likelihood of a better outcome. A 56-year-old woman with biliary stricture after cholecystectomy who had undergone several operations in other hospitals was admitted to Chinese PLA General Hospital.Computed tomography (CT) scan showed a dilated biliary tree and localized the level of ductal obstruction in the hepatic hilar stricture.In addition,CT identified fluid collections in the left upper quadrant and no artery injury was detected. Ultrasound-guided percutaneous abdominal drainage was performed to control the abdominal infection. Magnetic resonance cholangiopancreatography classified the injury as Bismuth Ⅲ.The patient with bile leakage and severe abdominal infection was treated with antibiotics before the final operation.On June 1,2012,the patient received Roux-en-Y hepaticojejunostomy.After operation,the patient recovered smoothly without severe complications,such as bile leakage,cholangitis and recurrent stricture.Liver function of the patient was back to normal and T tube drainage was pulled out at the end of 3 months of follow up.

Therapeutic effect of endoscopy for anastomotic and nonanastomotic biliary strictures after liver transplantation / 中华消化内镜杂志

Objective To evaluate the therapeutic effect of endoscopy for patients with anastomotic or nonanastomotic biliary strictures after liver transplantation.Methods Clinical and follow-up data of 56 patients,38 (67.9％) with anastomotic strictures (AS),and 18 (32.1％) with nonanastomotic strictures (NAS) after liver transplantation,who underwent endoscopic therapy were collected and analyzed.Results Compared to AS patients,NAS patients showed shorter time from liver transplantation to initial presentation (4.45 ± 1.47 vs.8.00 ±2.31 months,P =0.000),underwent more ERCP procedures (6.20 ±1.28 vs.4.11 ± 1.51,P =0.000) and received more stents (10.20 ±3.59 vs.7.53 ±2.12,P =0.001).Although the success rate was not statistically different,patients with NAS needed longer treatment duration and had higher recurrence rate (50.0％ vs.18.2％,P =0.033) as well as shorter duration from treatment to recurrence.Among patients with AS,the treatment failure group had longer stricture length (13.00 ±3.61 vs.6.63 ±2.09,P =0.000) than the success group and the patients who experienced recurrence had longer stricture length (10.48 ± 1.07 vs.5.86 ± 1.55,P =0.000) and narrower stricture diameter (1.52 ± 0.38 vs.1.94 ± 0.32,P =0.001).Among NAS patients,the multiple biliary strictures group had lower success rate and higher recurrence rate,but with no statistical significance (62.5％ vs.90.0％,P =0.275 and 66.7％ vs.37.5％,P =0.592,recpectively).Conclusion NAS patients have lower response to endoscopic treatment than AS patients.The length and diameter of biliary stricture in AS as well as the number of stricture in NAS may influent the effect of endoscopic treatment.

Temporary placement of fully covered metal stent for benign biliary strictures / 中华消化内镜杂志

ObjectiveTo explore the efficacy and safety of temporary placement of fully covered metal stent in the treatment of benign biliary strictures.MethodsFully covered metal stents were placed in 36 patients with benign biliary strictures.All patients were followed up every 1-2 months and the stents were removed when adequate biliary drainage was achieved.ResultsResolution of the benign biliary strictures was achieved in 28 of 36 patients (77.8％ ).All fully covered metal stents were removed successfully.Complications were observed in 3 patients (8.3％) after stent placement and in 1 (2.8％ ) after stent removal.ConclusionTemporary placement of fully covered metal stents for benign biliary strictures is safe and efficacious.Further investigation is required to longer follow-up.

Molecular mechanism of benign biliary stricture and biological therapy / 中华肝胆外科杂志

Benign biliary strictures(BBS) have different etiologies, and the most common causes are strictures secondary to iatrogenic and ischemic injury after hepatobiliary and transplantation surgery. Fibroblast proliferating activity, extracellular matrix overdeposition and scar proliferation are closely related to BBS. The mechanism of development of BBS involves a variety of cells, cytokines and extracellular matrix. In recent years, biological treatment is emerging as an effective option for BBS, but the clinical application is not yet mature and the curative effect needs to be evaluated further in the future.

The Efficacy and Safety of Fully Covered Self-expandable Metal Stents in Benign Extrahepatic Biliary Strictures / 대한소화기내시경학회지

BACKGROUND/AIMS: For the endoscopic treatment of benign biliary strictures (BBS), it has been a drawback to use plastic stents or uncovered self-expandable metal stents. We investigated the efficacy and safety of temporary placing fully covered self-expandable metal stents (FCSEMS) in BBS. METHODS: We enrolled 12 cases that followed up more than 6 months after insertion of a FCSEMS in BBS via ERCP. The cohort consisted of 9 patients with recurrent cholangitis, 2 patients with postcholecystectomy and 1 patient with chronic pancreatitis. The efficacy was assessed according to the resolution of strictures and also the restricture after stent removal, and the safety was evaluated according to the complications associated with stent placement. Finally, the removability of FCSEMSs was assessed. RESULTS: The median time of FCSEMS placement was 6.0 months. Resolution of the BBS was confirmed in 8 cases (67%) after a median post-removal follow-up of 8.5 months. Restricture after stent removal happened in 4 cases (33%). The complications were severe abdominal pain (n=2), pancreatic abscess (n=1) and stent migration (n=6). In 7 cases, all the FCSEMSs were successfully removed by grasping them with forceps. CONCLUSIONS: Temporary placement of a FCSEMS in BBS showed good therapeutic effects, relative safety and easy removability. Further evaluation is needed for determining the causes of restricture and for developing a new stent with antimigration features.

Estenoses biliares benignas: reparação e resultados com o uso de silastic transhepático transanastomótico / Benign biliary strictures: repair and outcome with the use of silastic transhepatic transanastomotic stents

RACIONAL: Os avanços da medicina nem sempre estão relacionados a bons resultados homogêneos para todos os pacientes. Este é o caso de colecistectomia laparoscópica, cujas vantagens são amplamente reconhecidos na literatura médica. No entanto, ela pode trazer consigo temida e grave complicação que é lesão iatrogênica da via biliar extra-hepática. Ela vem aumentando nos últimos anos, apesar da curva de aprendizagem já estar ultrapassada na maioria dos centros. Está estabilizada em nível mais elevado do que o registrado nas colecistectomias laparotômicas. Na reparação das grandes lesões bom resultado pode ser alcançado com a utilização de tubos transanastomóticos em associação à hepaticojejunostomias. OBJETIVOS: Relatar 20 anos de experiência na reconstrução das vias biliares por lesão ductal com o uso de tubos transanastomóticos. MÉTODOS: Foram analisados os dados de 338 pacientes que se submeteram à operação para as principais lesões do ducto biliar entre janeiro de 1988 e dezembro de 2009. RESULTADOS: Todos os 338 pacientes foram submetidos à hepaticojejunostomias com anastomoses em Y-de-Roux (Hepp-Couinaud) ou colangiojejunostomias, todos com o uso de tubos de silastic transanastomóticos. A longo prazo, bom resultado foi obtido em 240 (92,9 por cento) dos 338 pacientes, incluindo aqueles que necessitaram de procedimentos subsequentes. CONCLUSÃO: Estenoses biliares benignas próximas à confluência dos ductos hepáticos permanece sendo desafio cirúrgico. O uso de tubos de silastic transhepáticos transanastomóticos na reconstrução biliar alta é opção que pode proporcionar boa reparação biliar com baixos índices de complicações.

BACKGROUND: The medical advances is not always related to homogeneous good results for all the patients. This is the case of laparoscopic cholecystectomy, whose advantages are largely recognized in the medical literature. However, this operation most dreaded complication, iatrogenic major bile duct injury, is rising in the last years, despite the learning curve, and stabilized in a level higher than that experienced in open cholecystectomy. Among the features which can bring to this event a good outcome is the use of transhepatic transanastomotic tubes in association with the corrective hepaticojejunostomy. AIM: To report a 20 years experience on biliary reconstruction of bile duct injuries with the use of transhepatic transanastomotic tubes. METHODS: Data were analysed from 338 patients who underwent operation for major bile duct injuries between January 1988 and December 2009. RESULTS: All the 338 patients were submitted to Roux-en-Y hepaticojejunostomy (Hepp-Couinaud approach) or distinct cholangiojejunostomies, all with the use of transhepatic transanastomotic silastic tubes. A successful long-term result was achieved in 240 (92,9 percent) of 338 patients, including those who required subsequent procedures. CONCLUSION: Benign bile duct strictures near the hepatic duct confluence remains a surgical challenge. The use of silastic transhepatic transanastomotic tubes in high biliary tract reconstruction is an option which can provides a successful repair of bile duct injuries with low complication rates.

Estenosis biliares benignas: experiencia 77 casos / Benign biliary strictures: experience 77 cases

Se presenta la experiencia de los autores con 77 casos de estenosis biliares benignas tratadas en Unidad de Cirugía Hepática, Biliar y trasplante de hígado del Hospital Universitario de Maracaibo. Desde agosto de 1989 hasta diciembre de 2009, fueron registrados 77 casos de estenosis biliares benignas. Se tipificaron según la clasificación de Bismuth. 83,12% (64) de los pacientes habían sido colecistectomizados (estenosis post-iatrogenia durante este procedimiento): 41 (53,25%) abiertas y 23 (29,87%) laparoscópicas. 89,61 (69) de los pacientes consultaron por ictericia, 62,34% fiebre y 58,44% dolor abdominal. 9% (7) presentó estenosis Bismuth I, 22% (17) tipo II, 44,16% (34) tipo III y 24,68% (19) tipo IV. A todos se les realizó exploración biliar quirúrgica y anastomosis mucosa-mucosa con Y-Roux, tipo Hepp-Couinaud en 70 (87,5%) de los pacientes. La mortalidad fue 2,6% (2) paciente en el transoperatorio. Se presentaron en el peri-operatorio 19 (24,39%) complicaciones en 17 (22%) pacientes: 12 (15,6%) mayores y 7 (8,79%) menores. En un seguimiento promedio de 49 meses, 7-79% (6) pacientes presentaron re-estenosis de la derivación bilioentérica. El mayor porcentaje de estenosis biliares benignas son posteriores a procedimientos quirúrgicos, principalmente colecistectomia. La anastomosis bilioentérica tipo Hepp-Couinaud se realizó en el mayor número de pacientes con excelentes resultados.

Present experience of the authors with 77 cases of bening biliary strictures. From August of 1989 to December of 2009, 77 patients were recorded. Classification of Bismuth was used to classificate the strictures 64 (83,12%) patients were cholecistectomizated (stricture by iatrogenia during this procedure): 41 (53,25%) open and 23 (29,87%) laparoscopic. 89,61% (69) consulted by jaundice, 62,34 by fever and 58,44% by abdominal pain. 9%(7) had stricture Bismuth 1,22% (17) type II, 44,16% (34) type III and 24,68% (19) type IV. All patients were summated to surgical biliary exploration and mucous-mucous biliary anastomosis with Y-Roux. Hepp-Couinaud type in 70 (87,7%) of the patients. Perioperative mortality was 2,6% (2). Perioperative complications were 19 (24,39%) in 17 (22%) patients: 12 (15,6%) mayor and 7(8,79%) minors. In medial following of 49 months, 7,79% (6) presented re-stricture of bilio-enteric anastonosis. The majority of the strictures were due to surgical procedures. Hepp-Couinaud anastomosis was performed in almost all the patients with excellent outcome.

Clinical Use of Gianturco Expandable Metallic Stent in Benign Biliary Stricture: Result of Longterm Follow-up / 한국간담췌외과학회지

BACKGROUND: Self-expandable metallic stent is an effective method in palliative treatment of malignant biliary stricture. However, it is controvesial in benign biliary stricture due to recurrent jaundice, cholangtitis, and finally, obstruction of stent. The purpose of this study was to determine the long-term effectiveness of Gianturco expandable metallic stents in benign biliary strictures. METHODS: We inserted Gianturco self-expandable metallic stent in 13 patients (42~69 years old, 6 men and 7 women) with benign biliary stricture between November 1991 and September 1994 in Wonkwang University Hospital. All patients had a previous history of biliary surgery and underwent balloon dilatation procedure for management of strictures. Insertion routes were percutaneous transhepatic biliary drainage tracks in 8 cases and T-tube tracks in 5 cases. The insertion site was the right intrahepatic duct in 5 cases, the left intrahepatic duct in 2 cases, both intrahepatic ducts in 1 case, common hepatic duct in 1 case, and distal common bile ducts in 4 cases. The stents used were 2~6cm in length and 8~12mm in diameter. The follow-up period was 46months to 81months(mean, 67months). RESULTS: The initial technical success rate was 100% with good immediate patency in all patients. Nine patients(69.2%) had no recurrence of the initial strictures during the follow-up period and 4 patients(30.7%) had further symptoms of biliary obstruction caused by recurrent cholangitis or intrahepatic duct stone formation. These 4 recurrent biliary strictures were treated by surgical methods. The recurrent stricture sites were distal common bile duct(1case), left intrahepatic duct(1case), both intrahepatic ducts(1case), and Roux-en-Y hepaticojejunostomy site(1case). CONCLUSIONS: According to the results of long-term follow-up, expandable metallic stent is a useful method in recurrent biliary strictures, especially in the case where operation is not feasible; poor risk patients, patients refusing operation, multiple biliary operation.