Removal of intrahepatic bile duct stone could reduce the risk of cholangiocarcinoma: A single-center retrospective study in South Korea

BACKGROUND Intrahepatic duct(IHD)stones are among the most important risk factors for cholangiocarcinoma(CCC).Approximately 10%of patients with IHD stones develop CCC;however,there are limited studies regarding the effect of IHD stone removal on CCC development.AIM To investigate the association between IHD stone removal and CCC development.METHODS We retrospectively analyzed 397 patients with IHD stones at a tertiary referral center between January 2011 and December 2020.RESULTS CCC occurred in 36 of the 397 enrolled patients.In univariate analysis,chronic hepatitis B infection(11.1%vs 3.0%,P=0.03),carbohydrate antigen 19-9(CA19-9,176.00 vs 11.96 II/mL,P=0.010),stone located in left or both lobes(86.1%vs 70.1%,P=0.042),focal atrophy(52.8%vs 26.9%,P=0.001),duct stricture(47.2%vs 24.9%,P=0.004),and removal status of IHD stone(33.3%vs 63.2%,P<0.001)were significantly different between IHD stone patients with and without CCC.In the multivariate analysis,CA19-9>upper normal limit,carcinoembryonic antigen>upper normal limit,stones located in the left or both lobes,focal atrophy,and complete removal of IHD stones without recurrence were independent factors influencing CCC development.However,the type of removal method was not associated with CCC risk.CONCLUSION Complete removal of IHD stones without recurrence could reduce CCC risk.

Modified rendezvous intrahepatic bile duct cannulation technique to pass a PTBD catheter in ERCP

The rendezvous procedure combines an endoscopic technique with percutaneous transhepatic biliary drainage(PTBD).When a selective common bile duct cannulation fails,PTBD allows successful drainage and retrograde access for subsequent rendezvous techniques.Traditionally,rendezvous procedures such as the PTBDassisted over-the-wire cannulation method,or the parallel cannulation technique,may be available when a bile duct cannot be selectively cannulated.When selective intrahepatic bile duct(IHD) cannulation fails,this modified rendezvous technique may be a feasible alternative.We report the case of a modified rendezvous technique,in which the guidewire was retrogradely passed into the IHD through the C2 catheter after end-to-end contact between the tips of the sphincterotome and the C2 catheter at the ampulla's orifice,in a 39-year-old man who had been diagnosed with gallbladder carcinoma with a metastatic right IHD obstruction.Clinically this procedure may be a feasible and timesaving technique.

The abnormal expression of E-cadherin in intrahepatic bile duct epithelia cells in biliary atresia and its relationship with apoptosis

To explore the relationship between the expression of E-cadherin and the apoptosis in intrahepatic bile duct epithelial cells in biliary atresia (BA).Methods The E-cadherin expression was demonstrated by immunohistochemical staining for the liver specimens from 38 children with BA and 16 normal children.The apoptotic intrahepatic bile duct epithelial cells in these specimens were visualized by TdT-mediated dUTP-digoxigenin nick end labeling (TUNEL) assay,and the apoptotic index (AI) was calculated from the percentage of apoptotic cells in total cells.Results The intensity of E-cadherin expression in bile duct epithelial cells in BA group was lower than that in the normal control group (0.33±0.12 vs 0.62±0.20,P<0.01).On the other hand,the AI in BA group was significant higher than that in control group (51.74±19.93 vs 12.34±19.32,P<0.01).An inverse correlation was detected between the intensity of E-cadherin and the AI in the liver from children with BA.Conclusion The abnormal decrease of E-cadherin may lead to an increase of the apoptosis of intrahepatic bile epithelial cells in BA,resulting in developmental disorder of intrahepatic bile duct and ductal plate malformation in the liver.12 refs,4 figs,1 tab.

Congenital left intrahepatic bile duct draining into gastric wall mimicking biliary reflux gastritis

Abnormalities and variations of the biliary ducts are not rare.Most aberrant bile ducts eventually drain into the descending part of duodenum through the papilla of vater.However,drainage of the left hepatic bile duct into the stomach is extremely rare.A 29-year old man was admitted to the hospital with the diagnosis of biliary reflux gastritis.Comprehensive imaging modalities were performed including electronic endoscopy,endoscopic ultrasonography,endoscopic retrograde cholangiopancreatography and magnetic resonance cholangio-pancreatography.Finally,congenital ectopic left intrahepatic bile duct draining into the stomach was found,which caused biliary reflux gastritis.The patient did not receive any surgery.Good recovery was achieved by medical treatment.

A case of very large intrahepatic bile duct adenoma followed for 7 years

A 70-year-old man was referred to our hospital due to abnormal liver function. A tumor of 92 mm × 61 mm was detected on ultrasound screening of the left liver lobe. Although the tumor was suspected to be intrahepatic bile duct carcinoma, he had chronic heart disease and was unable to undergo surgery. Therefore, he was followed without further testing. No increase in tumor serum markers or tumor size was observed for the subsequent 7 years. We continued to suspect intrahepatic bile duct carcinoma, and we decided to perform a tumor biopsy. Tumor biopsy findings indicated intrahepatic bile duct adenoma(BDA), which is a rare benign epithelial liver tumor typically ranging from 1 mm to20 mm. We herein report a case of very large BDA followed for 7 years.

Sinistroposition of the gallbladder and common bile duct

BACKGROUND: Despite its rare incidence, few cases of left-side gallbladder have been already published. METHODS: We reported herein the case of a 29-year-old man with a left liver tumor in whom left lateral bisegmen- tectomy was mandatory. It represents the first description of a sinistroposition of both gallbladder and common bile duct. RESULTS: Surgical exploration revealed a left-side gall- bladder , located under the left lobe of the liver. During he- patic parenchyma dissection at the left side of the round liga- ment and the Rex recessus, the common bile duct was in- jured. Complete separation of hepatic pedicle structures showed that the upper biliary convergence passed on the left side of the Rex recessus before reaching the hepatoduo- denal ligament. CONCLUSION: Only careful dissection of the hepatoduo- denal ligament up to Rex recessus level prior to liver paren- chyma resection could avoid biliary tract injury during left lobectomy.

Robotic assisted Roux-en-Y hepaticojejunostomy in a post-cholecystectomy type E2 bile duct injury

Roux-en-Y hepaticojejunostomy anastomosis is the treatment of choice for common hepatic duct injury type E2.It has been performed laparoscopically with the advancement of laparoscopic skill.Recently,a telemanipulative robotic surgical system was introduced,providing laparoscopic instruments with wrist-arm technology and 3-dimensional visualization of theoperative field.We present a case of 36-year-old female patient who had undergone elective cholecystectomy2 mo ago for gall stones and had a common bile duct injury during surgery.As the stricture was old and complete it could not be tackled endoscopically.We did a laparoscopic assisted adhesiolysis followed by robotic Roux-en-Y hepaticojejunostomy.No intraoperative complications or technical problems were encountered.Postoperative period was uneventful and she was discharged on the 4th postoperative day.At followup,she is doing well without evidence of jaundice or cholangitis.This is the first reported case of robotic hepaticojejunostomy following common bile duct injury.The hybrid technique gives the patient benefit of laparoscopic adhesiolysis and robotic suturing.

Clinical Studies on Ultrasound Lithotripsy in Intrahepatic Bile－duct via Abdomen

patients with left/right intrahepatic bile-duct calculi received ultrasonic lithotresis via abdomen by using the percutaneous cholecystoscopeand ultrasonic lithotresis apparatus. The results indicated that all the surgical manipulations were successful with a residual rate of 6. 7 %, compared with a residual rate of 78. 2 % in 23 cases of left/right intrahepatic bile-duct lithiasis treated simultaneously by lithotomy apparatus. The differences between them were statistically significant (μ= 4. 29, P<0. 01). Among 12 cases undergoing follow-up observation , no side effect due to ultrasonic lithotresis and no residual calculus after 2- 4 check-ups with B-mode ultrasound diagnostic set were found and all of their symptoms disappeared except for 1 case.

Apoptosis and proliferation of intrahepatic bil educt after ischemia-reperfusion injury

BACKGROUND: In orthotopic liver transplantation, ische-mic-reperfusion is one of the most important factors thatcause the incidence of biliary complicance. The aim of thisstudy was to investigate the effects of ischemia reperfusionon epithelial cells apoptosis and proliferation of intrahepaticbile duct (IBD) (>20 μm).METHODS: 30-minute warm ischemia was applied to ratlivers respectively, and experiment was performed on days2,7, 14, 28 after reperfusion. Apoptosis was determined insitu by morphology and TUNEL, and cholangiocyte proli-feration was evaluated in situ by morphometry of liver sec-tions stained for cytokeratin-19 ( CK-19) and by prolifera-ting cellular nuclear antigen staining in liver sections.RESULTS: Two days after ischemia reperfusion, apoptosisof cells was observed in large intrahepatic bile ducts (>20μm) (5.6%±1.2%) , but the number of large intrahepaticbile ducts reduced (0.32 ±0.06). Seven days after ischemiareperfusion, the apoptosis index of cholangiocytes de-creased to 1.2%±0.3%, and the number of intrahepatic bileducts began to proliferate and returned to nearly normal onday 28.CONCLUSION: Ischemia reperfusion causes a decrease inthe number of intrahepatic bile ducts (>20 μm) as a resultof a higher rate of apoptosis and absence of initial prolifera-tion.

Preventive effects of autologous bone marrow mononuclear cell implantation on intrahepatic ischemic-type biliary lesion in rabbits

BACKGROUND: The ischemic-type biliary lesion (ITBL) is one of the most serious biliary complications of liver transplantation. This study aimed to investigate the effects of autologous bone marrow mononuclear cell (BM-MNC) implantation on neovascularization and the prevention of intrahepatic ITBL in a rabbit model. METHODS: The rabbits were divided into control, experimental model, and cell implantation groups, with 10 in each group. The model of intrahepatic ITBL was established by clamping the hepatic artery and common bile duct. Autologous BM-MNCs were isolated from the tibial plateau by density gradient centrifugation and were implanted through the common hepatic artery. Changes in such biochemical markers as aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, gamma-glutamyltranspeptidase, total bilirubin and direct bilirubin were measured. Four weeks after operation, cholangiography, histopathological manifestations, differentiation of BM-MNCs, microvessel density and the expression of vascular endothelial growth factor were assessed. RESULTS: Compared with the experimental model group, the BM-MNC implantation group showed superiority in the time to recover normal biochemistry. The microvessel density and vascular endothelial growth factor expression of the implantation group were significantly higher than those of the control and experimental model groups. The ITBL in the experimental model group was more severe than that in the implantation group and fewer new capillary blood vessels occurred around it. CONCLUSIONS: Implanted autologous BM-MNCs can differentiate into vascular endothelial cells, promote neovascularization and improve the blood supply to the ischemic bile duct, and this provides a new way to diminish or prevent intrahepatic ITBL after liver transplantation. (Hepatobiliary Pancreat Dis Int 2010; 9:593-599)

Clinical characteristics of intrahepatic biliary papilloma:A case report

BACKGROUND Intrahepatic bile duct papilloma(IPNB)is a rare benign tumour from the bile duct epithelium and has a high malignant transformation rate.Early radical resection can obviously improve the prognosis of patients,but it is difficult to be sure of the diagnosis of IPNB before operating.CASE SUMMARY This study included 28 patients with intraductal papilloma admitted to the First Hospital of Jilin University from January 2010 to November 2020 and recorded their clinical manifestations,imaging features,complications and prognosis.There were 12 males and 16 females with an average age of 61.36±8.03 years.Most patients had symptoms of biliary obstruction.Biliary dilatation and cystic mass could be seen on imaging.After surgery,IPNB was diagnosed by pathology.CONCLUSION IPNB is a rare benign tumour in the bile duct.Early diagnosis and timely R0 resection can improve the prognosis of IPNB.

Pathological classification of intrahepatic cholangiocarcinoma based on a new concept

Intrahepatic cholangiocarcinoma (ICC) arises from the lining epithelium and peribiliary glands of the intrahepatic biliary tree and shows variable cholangiocytic dif-f-e-re-ntiation. To date-,ICC was large-ly classifie-d into adenocarcinoma and rare variants. Herein,we propose to subclassify the former,based on recent progress in the-study of-ICC including the-gross classification and hepatic progenitor/stem cells and on the pathological similarities between biliary and pancreatic neoplasms. That is,ICC is classifiable into the conventional (bile duct) type,the bile ductular type,the intraductal neoplasm type and rare variants. The conventional type is further divided into the small duct type (peripheral type) and large bile duct type (perihilar type). The former is a tubular or micropapillary adenocarcinoma while the latter involves the intrahepatic large bile duct. Bile ductular type resembles proliferated bile ductules and shows a replacing growth of the hepatic parenchyma.Hepatic progenitor cell or stem cell phenotypes such as neural cell adhesion molecule expression are frequently expressed in the bile ductular type. Intraductal type includes papillary and tubular neoplasms of the bile duct (IPNBs and ITNBs) and a superficial spreading type. IPNB and ITNB show a spectrum from a preneoplastic borderline lesion to carcinoma and may have pancreatic counterparts. At invasive sites,IPNB is associated with the conventional bile duct ICC and mucinous carcinoma. Biliary mucinous cystic neoplasm with ovarian-like stroma in its wall is different from IPNB,particularly IPNB showing cystic dilatation of the affected ducts. Rare variants of ICC include squamous/adenosquamous cell carcinoma,mucinous/signet ring cell carcinoma,clear cell type,undifferentiated type,neuroendocrine carcinoma and so on. This classification of-ICC may ope-n up a ne-w fie-ld of-re-se-arch of-ICC and contribute-to the-clini cal approach to ICC.

Clinical and biological significance of precursor lesions of intrahepatic cholangiocarcinoma

Cholangiocarcinoma(CC) is primarily a malignant tumor of older adults most prevalent in Southeast Asia,where liver fluke infestation is high.However the etiology in western countries is unknown.Although the incidence of extrahepatic cholangiocarcinoma has remained constant,incidence of intrahepatic CC(ICC) which differs inmorphology,pathogenesis,risk factors,treatment and prognosis is increasing.While this increase is associated with hepatitis C virus infection,chronic nonalcoholic liver disease,obesity,and smoking,the pathogenesis of ICC and molecular alterations underlying the carcinogenesis are not completely elucidated.Benign biliary lesions such as biliary intraepithelial neoplasia,intraductal papillary neoplasm of the bile duct,von Meyenburg complex or bile duct hamartoma,and bile duct adenoma have been associated with ICC.For each of these entities,evidence suggests or supports a role as premalignant lesions.This article summarized the important biological significance of the precursor lesions of ICC and the molecular mechanisms that may be involved in intrahepatic cholangiocarcinogenesis.

Cystic Degeneration of Peripheral Intrahepatic Cholangiocarcinoma: An Atypical Presentation

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.

Servqual模型评价肝内外胆管结石微创手术护理质量的研究

目的探究Servqual模型在评价肝内外胆管结石微创手术护理质量中的应用效果。方法选取2021年1月至2022年6月于九江市第一人民医院肝胆外科行肝内外胆管结石微创手术的200例住院患者作为研究对象,采用随机数字表法分为对照组与观察组,每组100例。对照组给予常规护理,观察组给予改进护理干预。两组均采用Servqual量表评估护理质量。比较两组护理质量评分,采用单因素分析和多元线性回归分析护理质量的影响因素。结果观察组移情性、保证性、反应性、可靠性、有形性及总分服务期望(E)、服务感知(P)、感知服务质量(SQ)值均高于对照组,差异有统计学意义(P<0.05);单因素分析结果显示,不同学历、家庭人均月收入、医疗支付方式、不良情绪、自理能力、病房环境、护理人员态度的患者SQ值比较差异有统计学意义(P<0.05)。多元线性回归分析结果显示,家庭人均月收入、医疗支付方式是护理质量的影响因素(P<0.05)。结论Servqual模型评价肝内外胆管结石微创手术的护理质量具有可靠性,可有效评估护理干预中存在的问题,并提出相应改进对策,提升护理质量。

腹腔镜联合胆道镜治疗左肝内胆管结石合并胆总管结石的安全性及有效性分析

目的:研究腹腔镜联合胆道镜治疗左肝内胆管结石同时合并胆总管结石的效果,同时探讨安全性及有效性。方法:选取萍乡市人民医院肝胆胰外科2018年1月—2022年12月收治的左肝内胆管结石合并胆总管结石患者180例作为研究对象,按照随机数字表法分为观察组(90例)和对照组(90例)。观察组的患者使用腹腔镜左肝切除及胆道镜取石,对照组的患者采取常规开腹左肝切除及胆道镜取石,比较两组患者相关手术时间、术中出血量、术后患者结石残留率、并发症发生率,比较两组患者术后下地时间、胃肠道功能恢复时间、术后住院时间及肝功能变化等指标。结果:观察组的手术时间长于对照组,其术中出血量少于对照组,术后下地时间、术后胃肠道功能恢复时间、术后住院时间均明显短于对照组(P<0.05)。观察组术后丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)和总胆红素(TBIL)的水平均明显低于对照组(P<0.05)。观察组围手术期切口感染、胆漏、胆道出血及肺部感染的发生率为6.67%(6/90),显著低于对照组的16.67%(15/90)(P<0.05)。术后随访显示,观察组结石残留率为3.33%(3/90),对照组为2.22%(2/90),两组间结石残留率差异无统计学意义(P>0.05)。结论:腹腔镜肝切除联合胆道镜取石治疗左肝内胆管结石合并胆总管结石可减少手术创伤,加快患者康复,改善肝功能,减少术后并发症,取石效果好,安全可靠。

Laennec膜入路的肝切除在左肝内胆管结石中的应用

目的探索Laennec膜入路为主的肝切除在左肝内胆管结石中的安全性、可行性和应用价值。方法选取2021年1月至2023年7月萍乡市人民医院收治因左肝内胆管结石(可同时合并肝外胆道系统结石)的60例患者作为研究对象,采用随机数字表法分为观察组与对照组,每组30例。所有患者均行腹腔镜左肝(含左半肝和左外叶)切除术,观察组采用Laennec膜入路为主,对照组采用Glisson鞘或肝静脉入路为主。比较两组围手术期指标、肝功能指标、残石率及并发症发生率。结果观察组围手术期各指标水平均优于对照组,差异有统计学意义(P<0.05);两组手术前肝功能各指标水平比较,差异无统计学意义(P>0.05),观察组手术后丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、直接胆红素(DBil)水平均低于对照组,差异有统计学意义(P<0.05);观察组残石率、并发症总发生率均低于对照组,差异有统计学意义(P<0.05)。结论Laennec膜入路为主的解剖性肝切除在左肝内胆管结石患者治疗中获得显著效果,残石率较低,并发症较少,临床应用安全可靠,值得推广。

Clinical significance of main pancreatic duct dilation on computed tomography: Single and double duct dilation

AIM: To study the patients with main pancreatic duct dilation on computed tomography (CT) and thereby to provide the predictive criteria to identify patients at high risk of significant diseases, such as pancreatic cancer, and to avoid unnecessary work up for patients at low risk of such diseases. METHODS: Patients with dilation of the main pancreatic duct on CT at Emory University Hospital in 2002 were identified by computer search. Clinical course and ultimate diagnosis were obtained in all the identified patients by abstraction of their computer database records. RESULTS: Seventy-seven patients were identified in this study. Chronic pancreatitis and pancreatic cancer were the most common causes of the main pancreatic duct dilation on CT. Although the majority of patients with isolated dilation of the main pancreatic duct (single duct dilation) had chronic pancreatitis, one-third of patients with single duct dilation but without chronic pancreatitis had pancreatic malignancies, whereas most of patients with concomitant biliary duct dilation (double duct dilation) had pancreatic cancer. CONCLUSION: Patients with pancreatic double duct dilation need extensive work up and careful followup since a majority of these patients are ultimately diagnosed with pancreatic cancer. Patients with single duct dilation, especially such patients without any evidence of chronic pancreatitis, also need careful follow-up since the possibility of pancreatic malignancy, including adenocarcinoma and intraductal papillary mucinous tumors, is still high.

鞘管保护下硬质胆道镜经腹腔镜胆总管入路治疗肝内外胆管结石的临床价值

目的探讨鞘管保护下硬质胆道镜(硬镜)经腹腔镜胆总管入路治疗肝内胆管结石和胆总管结石的临床价值。方法选取115例肝内外胆管结石患者作为研究对象。根据手术方法将患者分为硬镜组58例、软镜组57例,硬镜组采用鞘管保护下硬质胆道镜经腹腔镜胆总管入路取石治疗,软镜组采用纤维胆道镜经腹腔镜胆总管入路取石治疗。比较两组患者的手术时间、术中出血量、术后住院时间、结石清除率,以及术后第1天肝功能(空腹静脉血总胆红素、直接胆红素、碱性磷酸酶、γ-谷氨酰转移酶水平)、术后并发症发生情况等。结果硬镜组患者的手术时间短于软镜组,结石清除率高于软镜组,差异均有统计学意义(均P<0.05);两组患者的术中出血量、术后住院时间、术后并发症发生率,以及术后第1天总胆红素、直接胆红素、碱性磷酸酶、γ-谷氨酰转移酶水平比较,差异均无统计学意义(均P>0.05)。结论鞘管保护下硬质胆道镜经腹腔镜胆总管入路治疗肝内胆管结石和胆总管结石的手术时间短、结石清除率高,是一种安全、高效的手术策略,具有一定的潜在应用价值。