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1.
Prensa méd. argent ; 107(1): 13-17, 20210000. fig
Article in Spanish | LILACS, BINACIS | ID: biblio-1362062

ABSTRACT

La agenesia de la vesícula biliar (AVB) es una entidad congénita rara. La mayoría de los pacientes, permanecen asintomáticos, mientras que los que presentan síntomas informan síntomas que imitan el cólico biliar. La evaluación inicial para la sospecha de patología de la vesícula biliar, como la ecografía del cuadrante superior derecho, Puede ser engañosa o no concluyente. En consecuencia, algunos pacientes son finalmente diagnosticados intra-operatoriamente. Por lo tanto, deben mantener la AVB como un diagnóstico diferencial y deben realizarse como la colangiopancreatografía por resonancia magnética (CPRMN) cuando otras pruebas no sean concluyentes. Presentamos una mujer de 39 años que presento síntomas crónicos compatibles con cólico biliar y una ecografía equívoca informada como escleroatrófica con colelitiasis. Se le realizó laparoscopia durante la cual se constató la ausencia de vesícula biliar. La CPRM posoperatoria confirmó el diagnóstico de AG.


Gallbladder agenesis (GA) is a rare congenital entity. Most patients remain asymptomatic, while those with symptoms report symptoms that mimic bile colic. Initial evaluation for suspected gallbladder pathology, such as ultrasound of the right upper quadrant, May be misleading or inconclusive. As a result, some patients are eventually diagnosed intra-operatively. Therefore, GA should be maintained as a differential diagnosis and should be performed as magnetic resonance cholangiopancreatography (MRI) when other tests are inconclusive. We present a 39-year-old woman who has chronic symptoms compatible with biliary colic and an equivocal ultrasound reported as scleroatrofic with cholelithiasis. Laparoscopy was performed during which the absence of gallbladder was found. Postoperative CPRM confirmed the diagnosis of GA.


Subject(s)
Humans , Female , Adult , Congenital Abnormalities/pathology , Biliary Tract/abnormalities , Blister/pathology , Laparoscopy , Cholangiopancreatography, Magnetic Resonance , Diagnosis, Differential
2.
Article in Chinese | WPRIM | ID: wpr-880448

ABSTRACT

Biliary stent has been widely used in the treatment of biliary stricture and obstruction, it can relieve the pain of patients effectively, but bacterial infection and stent obstruction are still troublesome after surgery. We introduce the mechanism of infection and stent blockage caused by bacterial invasion after biliary stent implantation, and expound the formation mechanism of bacterial biofilm and bile sludge in this review. Antibacterial biliary stent is an effective way to inhibit biliary tract infection, the literatures on antibacterial modification of biliary stent with different antibacterial methods in domestic and abroad are reviewed, and the research prospect of antibacterial biliary stent is summarized and prospected.


Subject(s)
Anti-Bacterial Agents/pharmacology , Bile , Biliary Tract , Cholestasis , Humans , Stents
3.
Chinese Journal of Surgery ; (12): 422-429, 2021.
Article in Chinese | WPRIM | ID: wpr-878280

ABSTRACT

To further improve the standard of diagnosis and treatment of acute biliary tract infections in China, the Branch of Biliary Surgery, Society of Surgery, Chinese Medical Association has revised the guidelines for the diagnosis and treatment of acute biliary tract infections (2011).The guidelines describe the risk factors of acute biliary tract infections, propose diagnostic methods and severity classification criteria, and define the treatment of acute biliary tract infections and the standardized application of antibiotics. The treatment of acute biliary tract infection should be combined with surgical care, antimicrobial therapy and systemic management, and should be completed under the guidance of experienced surgical specialist. Reasonable selection of diagnosis and treatment measures, accurate understanding of surgical procedures and standardized use of antibiotics can achieve maximum treatment result for acute biliary tract infection.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Biliary Tract , Biliary Tract Surgical Procedures , China , Cholangitis/surgery , Humans
4.
ABCD arq. bras. cir. dig ; 34(3): e1607, 2021. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1355524

ABSTRACT

ABSTRACT Background: Retrograde endoscopic cholangiopancreatography (ERCP) effectively treats biliary and pancreatic disorders. Its indications are limited and precise, since its misuse delays adequate treatment, increases costs and to patient´s adverse events. Aim: To compare clinical, radiological and exploratory characteristics in relation to therapeutic success in patients undergoing ERCP in relation to age. Method: 421 patients who underwent the method were retrospectively studied; those who were not able to access the duodenal papilla were excluded. The patients were divided into two age groups: <60 years (group 1) and >60 years (group 2), and the variables of gender, examination indications, radiological findings, therapeutic success, diagnosis and the occurrence of immediate adverse events were analyzed. Results: 177 patients were allocated to group 1 and 235 to group 2. The main indication found in both groups was choledocholithiasis. In group 2, the number of cases of acute cholangitis (p=0.001), biliary stenosis (p=0.002) and papilla cancer (p=0.046) was higher. In this group, urgent indication for ERCP was higher (p=0.042), as well as the diagnosis of biliary tract dilatation (p<0.001). The placement of prostheses was the most common procedure performed in both groups, but the greatest number of patients in absolute quantity occurred in group 2. In group 1, the success in catheterization and the chance of achieving clearing of the biliary tract was significantly higher in compared to group 2 (p=0.016, OR=2.1). Conclusion: The success of catheterization and complete clearance of the bile duct was significantly higher in the group of young patients.


RESUMO Racional: A colangiopancreatografia endoscópica retrógrada (CPRE) trata eficazmente afecções biliares e pancreáticas. Suas indicações são limitadas e precisas, uma vez que seu uso indevido atrasa o tratamento adequado, aumenta os custos e submete pacientes a eventos adversos. Objetivo: Comparar as características clínicas, radiológicas e exploratórias em relação ao sucesso terapêutico em pacientes submetidos à CPRE com relação à idade. Método: Foram estudados retrospectivamente 421 pacientes submetidos ao método sendo excluídos aqueles onde não foi possível ao acesso a papila duodenal. Os pacientes foram divididos em dois grupos etários: <60 anos (grupo 1) e >60 anos (grupo 2) e analisadas as variáveis gênero, indicações do exame, achados radiológicos, sucesso terapêutico, diagnóstico e a ocorrência de eventos adversos imediatos. Resultados: 177 pacientes foram alocados no grupo 1 e 235 no grupo 2. A principal indicação encontrada em ambos os grupos foi coledocolitíase. No grupo 2, o número de casos de colangite aguda (p=0,001), estenose biliar (p=0,002) e neoplasia de papila (p=0,046) foi superior. Nesse grupo a indicação da CPRE em caráter de urgência foi superior (p=0,042), bem como o diagnóstico de dilatação da via biliar (p<0,001). A colocação de próteses foi o procedimento mais comumente realizado nos dois grupos, mas o maior número de doentes em quantidade absoluta ocorreu no grupo 2. No grupo 1, o sucesso na cateterização e a chance de conseguir o clareamento da via biliar foi significativamente superior em relação ao grupo 2 (p=0,016, OR=2,1). Conclusão: O sucesso da cateterização e o clareamento completo da via biliar foi significativamente superior no grupo de pacientes jovens.


Subject(s)
Humans , Biliary Tract , Cholestasis , Choledocholithiasis , Retrospective Studies , Cholangiopancreatography, Endoscopic Retrograde , Middle Aged
6.
Prensa méd. argent ; 106(6): 343-351, 20200000. graf, fig, tab
Article in Spanish | LILACS, BINACIS | ID: biblio-1367038

ABSTRACT

Antecedentes: La rápida diseminación mundial de la enfermedad COVID-19 llevó a declarar la Emergencia Sanitaria, en Argentina se decretó el Aislamiento Social Preventivo y Obligatorio el 20 de Marzo, siguiendo con estos lineamientos Tucumán tuvo que adaptarse reestructurando su Sistema Provincial de Salud, quedando el Hospital de Clínicas Pte. Nicolás Avellaneda, como único hospital polivalente para patologías prevalentes. Objetivo: Mostrar el manejo quirúrgico integral mininvasivo de la patología biliar (laparoscópico, endoscópico, percutáneo y combinado), con plena vigencia de la CMA en este momento de Pandemia, durante el periodo del 20 de Marzo al 29 de Mayo del 2020. Material y métodos: Estudio descriptivo, prospectivo de corte transversal, de la patología quirúrgica biliar a quienes se le realizó Cribado Epidemiológico, exámenes preoperatorios, de ser necesaria una Tomografía Computada de Tórax; con Consentimiento Informado. Resultados: En el periodo estudiado, en el contexto de la pandemia se realizaron 51 intervenciones de la vía biliar; las vías de abordaje de elección fueron de cuatros tipos, según el orden de frecuencia: laparoscópico 65%, combinado 25%, endoscópico 8% y percutáneo 2%, con la modalidad de CMA (Cirugía Mayor Ambulatoria) se realizó 20% y 80% con internación hospitalaria, de los cuales tuvieron un promedio de un día y medio de estadía postoperatorio. Conclusión: La aparición de la Pandemia nos dió la oportunidad de incorporar nuevas técnicas mininvasivas y fortalecer la CMA. Para poder realizar esta labor, es necesario priorizar la seguridad en el entorno de trabajo y la atención de los pacientes.


Health Emergency, in Argentina Preventive and Mandatory Social Isolation was decreed on March 20, following these guidelines Tucumán had to restructure its Provincial Health System, leaving the Hospital Clinicas Pte. Nicolás Avellaneda, as the only multipurpose hospital for prevalent pathologies. Objective: To show the comprehensive minimally invasive surgical management of biliary pathology (laparoscopic, endoscopic, percutaneous, and combined), with full effect of the CMA at this time of the Pandemic, during the period from March 20 to May 29, 2020. Material and Methods: Descriptive, prospective, cross-sectional study of biliary surgical pathology for those who underwent Epidemiological Screening, preoperative examinations, if necessary, a Computed Tomography of the Thorax; with Informed Consent. Results: In the period studied, 51 bile duct problems were performed in the context of the pandemic; the approach routes of choice were of four types, according to the order of frequency: laparoscopic 65%, combined 25%, endoscopic 8% and percutaneous 2%, with the flexibility of CMA (Major Ambulatory Surgery) performed 20% and 80% with hospitalization, of which they had an average of one and a half days of postoperative stay. Conclusion: The appearance of the Pandemic gave us the opportunity to incorporate new minimally invasive techniques and strengthen the CMA. In order to carry out this work, it is necessary to prioritize safety in the work environment and patient care


Subject(s)
Humans , Biliary Tract/pathology , Mass Screening/statistics & numerical data , Minimally Invasive Surgical Procedures , COVID-19 , Hospital Restructuring/organization & administration , Informed Consent
7.
Gut and Liver ; : 104-113, 2019.
Article in English | WPRIM | ID: wpr-719361

ABSTRACT

BACKGROUND/AIMS: There have been no nationwide studies to investigate the trends in incidence and 5-year survival rates of intra- and extrahepatic bile duct cancers and gall-bladder cancer. Therefore, our study aimed to describe the incidence and 5-year survival rates of biliary tract cancers by subsites in South Korea. METHODS: A total of 86,134 patients with biliary tract cancers were selected from the National Health Information Database. Age-standardized incidence rates and annual percentage changes were calculated. Life-table methods and log-rank tests were used to determine the differences in survival rates. Cox-proportional hazard models were used to estimate the hazard ratio of the patients with biliary tract cancers. RESULTS: The incidence rate of intra-hepatic bile duct cancer decreased by 1.3% annually from 8.8 per 100,000 in 2006 to 7.8 per 100,000 in 2015. Extrahepatic bile duct cancer also showed a decreasing trend by 2.2% per year from 8.7 per 100,000 in 2006 to 6.7 per 100,000 in 2015. Gallbladder cancer showed the greatest decline, with an annual percentage change of 2.8% from 6.3 per 100,000 to 5.2 per 100,000 during the same period. The 5-year survival rates were 30.0% in gallbladder cancer, 27.8% in extrahepatic bile duct cancer, and 15.9% in intra-hepatic bile duct cancer. CONCLUSIONS: The overall incidence rates of intrahepatic and extrahepatic bile duct cancer and gallbladder cancer decreased from 2006 to 2015. Among biliary tract cancers, intrahepatic bile duct cancers exhibited the highest incidence rate and the worst survival rate.


Subject(s)
Bile Duct Neoplasms , Bile Ducts, Extrahepatic , Bile Ducts, Intrahepatic , Biliary Tract Neoplasms , Biliary Tract , Cholangiocarcinoma , Gallbladder Neoplasms , Humans , Incidence , Korea , Proportional Hazards Models , Survival Rate
8.
Article in Korean | WPRIM | ID: wpr-760167

ABSTRACT

Sex and gender medicine investigates the impact of sex and gender differences on normal conditions, pathogenesis, and clinical features of diseases. By considering sex and gender differences during diagnosis, treatment and prevention, a person can receive the best individualized treatment based on scientific evidence. In this review, sex and gender differences in the field of pancreatobiliary diseases are described regarding gallstones, acute cholecystitis, acute and chronic pancreatitis, and cancers of the pancreas and biliary tract. In addition, recent policy on clinical and preclinical research which states that sex and gender analysis should be included during planning, conducting, and interpretation of the researches and websites containing resources about sex and gender medicine are introduced. This review highlights the importance of considering sex and gender aspect in research, clinics, and medical education.


Subject(s)
Biliary Tract , Cholecystitis, Acute , Diagnosis , Education, Medical , Gallstones , Humans , Pancreas , Pancreatitis, Chronic
9.
Gut and Liver ; : 617-627, 2019.
Article in English | WPRIM | ID: wpr-763888

ABSTRACT

Intraductal papillary neoplasms of the bile duct (IPNBs) are known to show various pathologic features and biological behaviors. Recently, two categories of IPNBs have been proposed based on their histologic similarities to pancreatic intraductal papillary mucinous neoplasms (IPMNs): type 1 IPNBs, which share many features with IPMNs; and type 2 IPNBs, which are variably different from IPMNs. The four IPNB subtypes were re-evaluated with respect to these two categories. Intestinal IPNBs showing a predominantly villous growth may correspond to type 1, while those showing papillay-tubular or papillay-villous growth correspond to type 2. Regarding gastric IPNB, those with regular foveolar structures with varying numbers of pyloric glands may correspond to type 1, while those with papillary-foveolar structures with gastric immunophenotypes and complicated structures may correspond to type 2. Pancreatobiliary IPNBs that show fine ramifying branching may be categorized as type 1, while others containing many complicated structures may be categorized as type 2. Oncocytic type, which displays solid growth or irregular papillary structures, may correspond to type 2, while papillary configurations with pseudostratified oncocytic lining cells correspond to type 1. Generally, type 1 IPNBs of any subtype develop in the intrahepatic bile ducts, while type 2 IPNBs develop in the extrahepatic bile duct. These findings suggest that IPNBs arising in the intrahepatic ducts are biliary counterparts of IPMNs, while those arising in the extrahepatic ducts display differences from prototypical IPMNs. The recognition of these two categories of IPNBs with reference to IPMNs and their anatomical location along the biliary tree may deepen our understanding of IPNBs.


Subject(s)
Bile Ducts , Bile Ducts, Extrahepatic , Bile Ducts, Intrahepatic , Bile , Biliary Tract , Cholangiocarcinoma , Gastric Mucosa , Mucins
10.
Gut and Liver ; : 569-575, 2019.
Article in English | WPRIM | ID: wpr-763869

ABSTRACT

BACKGROUND/AIMS: Cholangiocytes are capable of reabsorbing bile salts from bile, but the pathophysiological significance of this process is unclear. To this end, we detected the expression and distribution of bile acid transport proteins in cholangiocytes from normal rat liver and analyzed the possible pathophysiological significance. METHODS: Bile duct tissues of Sprague-Dawley rats were isolated by enzymatic digestion and mechanical isolation, and then divided into large and small bile duct tissues. Immunohistochemistry, real-time polymerase chain reaction and Western blotting were used to determine the expression of the apical sodium-dependent bile acid transporter (ASBT), ileal bile acid binding protein (IBABP), and basolateral organic solute transporter α (Ostα) in the biliary tract system of rats. Differences in the expression and distribution of these proteins were analyzed. RESULTS: In cholangiocytes, ASBT and IBABP were mainly expressed in cholangiocytes of the large bile ducts, in which the expression of both was significantly higher than that in the small ducts (p0.05). CONCLUSIONS: Bile acid transporters are expressed and heterogeneously distributed in rat bile ducts, indicating that bile acid reabsorption by cholangiocytes might mainly occur in the large bile ducts. These findings may help explore the physiology of bile ducts and the pathogenesis of various cholangiopathies.


Subject(s)
Animals , Bile Acids and Salts , Bile Ducts , Bile , Biliary Tract , Blotting, Western , Carrier Proteins , Digestion , Immunohistochemistry , Liver , Physiology , Population Characteristics , Rats , Rats, Sprague-Dawley , Real-Time Polymerase Chain Reaction
11.
Gut and Liver ; : 471-478, 2019.
Article in English | WPRIM | ID: wpr-763852

ABSTRACT

BACKGROUND/AIMS: Metallic stents designed to relieve malignant biliary obstruction are susceptible to occlusive tumor ingrowth or overgrowth. In a previous report, we described metallic stents covered with paclitaxel-incorporated membrane (MSCPM-I, II) to prevent occlusion from tumor ingrowth via antitumor effect. This new generation paclitaxel-eluting biliary stent is further endowed with sodium caprate (MSCPM-III) for enhanced drug delivery. The purpose of this study is to examine the safety of its drug delivery system in the porcine biliary tract. METHODS: MSCPM-III (10% [wt/vol] paclitaxel) and covered metal stents (CMSs) were endoscopically inserted in porcine bile ducts in vivo. Histologic biliary changes, levels of paclitaxel released, and various serum analytes (albumin, alkaline phosphate, aspartate transaminase, alanine transaminase, total protein, total bilirubin, and direct bilirubin) were assessed. RESULTS: Based on the intensity of reactive inflammation and fibrosis, changes in porcine biliary epithelium secondary to implanted MSCPM-III were deemed acceptable (i.e., safe). Histologic features in the MSCPM-III and CMS groups did not differ significantly. In a related serum analysis, paclitaxel release from MSCPM-III stents was below the limit of detection for 28 days. Biochemical analyses were also similar for the two groups, and no evidence of hepatic or renal toxicity was found in animals receiving MSCPM-III stents. CONCLUSIONS: In a prototypic porcine trial, this newly devised metal biliary stent incorporating both paclitaxel and sodium caprate appears to be safe in the porcine bile duct.


Subject(s)
Alanine Transaminase , Animals , Aspartate Aminotransferases , Bile Ducts , Biliary Tract Neoplasms , Biliary Tract , Bilirubin , Drug Delivery Systems , Drug-Eluting Stents , Epithelium , Fibrosis , Inflammation , Limit of Detection , Membranes , Paclitaxel , Pancreatic Neoplasms , Self Expandable Metallic Stents , Sodium , Stents
12.
Article in English | WPRIM | ID: wpr-763190

ABSTRACT

PURPOSE: Jab1 is a coactivator of c-Jun that enhances the transcriptional function of c-Jun. Jab1 is frequently overexpressed in various cancers and is associatedwith poor prognosis of cancer patients. Thus, Jab1 could be a potential therapeutic target in cancer. However, the role of Jab1 in biliary tract cancer (BTC) has not been studied. MATERIALS AND METHODS: We performed in vitro and in vivo experiments to evaluate the therapeutic potential ofJab1 inhibition in BTC. RESULTS: Among 8 BTC cell lines, many showed higher Jab1 expression levels. In addition, Jab1 silencing by siRNA increased p27 expression levels. SNU478 and HuCCT-1 cells exhibited profound Jab1 knockdown and increased p27 expression by Jab1-specific siRNA transfection. Jab1 silencing induced anti-proliferative and anti-migratory effects and resulted in G1 cell cycle arrest in SNU478 and HuCCT-1 cells. In addition, Jab1 silencing potentiated the anti-proliferative and anti-migratory effects of cisplatin by increasing DNA damage. Interestingly,Jab1 knockdown increased PTEN protein half-life, resulting in increased PTEN expression. In the HuCCT-1 mouse xenograft model, stable knockdown of Jab1 by shRNA also showed anti-proliferative effects in vivo, with decreased Ki-67 expression and AKT phosphorylation and increased Terminal deoxynucleotidyl transferase–mediated dUTP nick end labeling and p27 expression. CONCLUSION: Jab1 knockdown demonstrated anti-proliferative and anti-migratory effects in BTC cells by increasing DNA damage and stabilizing PTEN, resulting in G1 cell cycle arrest. In addition, Jab1 silencing potentiated the anti-proliferative effects of cisplatin. Our data suggest that Jab1 may be a potential therapeutic target in BTC that is worthy of further investigations.


Subject(s)
Animals , Biliary Tract Neoplasms , Biliary Tract , Cell Line , Cisplatin , DNA Damage , G1 Phase Cell Cycle Checkpoints , Half-Life , Heterografts , Humans , In Vitro Techniques , Mice , Phosphorylation , Prognosis , PTEN Phosphohydrolase , RNA, Small Interfering , Transfection
13.
Article in English | WPRIM | ID: wpr-763189

ABSTRACT

PURPOSE: Gemcitabine plus cisplatin (GemCis) is the standard first-line chemotherapy for patients with advanced biliary tract cancer (BTC). In ABC-02 study, the BTC patients received up to 6-8 cycles of 3-weekly GemCis; however, those without progression often receive more than 6-8 cycles. The clinical benefit of maintenance treatment in patients without progression is uncertain. MATERIALS AND METHODS: Advanced BTC patients treated with GemCis between April 2010 and February 2015 at Asan Medical Center, Seoul, Korea, were retrospectively analysed. The patients without progression after 6-8 cycles were stratified according to further treatment i.e., with or without further cycles of GemCis (maintenance vs. observation groups). The primary endpoint was overall survival (OS) and progression-free survival (PFS). RESULTS: Among the 740 BTC patients in the initial screen, 231 cases (31.2%) were eligible for analysis (111 in the observation group, 120 in the maintenance group). The median OS from the GemCis initiation was 20.5 months (95% confidence interval [CI], 15.4 to 25.6) and 22.4 months (95% CI, 17.0 to 27.8) in the observation and maintenance groups, respectively (p=0.162). The median PFS was 10.4 months (95% CI, 7.0 to 13.8) and 13.2 months (95% CI, 11.3 to 15.2), respectively (p=0.320). CONCLUSION: sGemCis maintenance is not associated with an improved survival outcome.


Subject(s)
Biliary Tract Neoplasms , Biliary Tract , Cholangiocarcinoma , Cisplatin , Disease-Free Survival , Drug Therapy , Humans , Korea , Retrospective Studies , Seoul
14.
Cancer Research and Treatment ; : 1167-1179, 2019.
Article in English | WPRIM | ID: wpr-763163

ABSTRACT

PURPOSE: The DNA damage response (DDR) is a multi-complex network of signaling pathways involved in DNA damage repair, cell cycle checkpoints, and apoptosis. In the case of biliary tract cancer (BTC), the strategy of DDR targeting has not been evaluated, even though many patients have DNA repair pathway alterations. The purpose of this study was to test the DDR-targeting strategy in BTC using an ataxia-telangiectasia and Rad3-related (ATR) inhibitor. MATERIALS AND METHODS: A total of nine human BTC cell lines were used for evaluating anti-tumor effect of AZD6738 (ATR inhibitor) alone or combination with cytotoxic chemotherapeutic agents through MTT assay, colony-forming assays, cell cycle analyses, and comet assays. We established SNU478-mouse model for in vivo experiments to confirm our findings. RESULTS: Among nine human BTC cell lines, SNU478 and SNU869 were the most sensitive to AZD6738, and showed low expression of both ataxia-telangiectasia mutated (ATM) and p53. AZD6738 blocked p-Chk1 and p-glycoprotein and increased γH2AX, a marker of DNA damage, in sensitive cells. AZD6738 significantly increased apoptosis, G2/M arrest and p21, and decreased CDC2. Combinations of AZD6738 and cytotoxic chemotherapeutic agents exerted synergistic effects in colony-forming assays, cell cycle analyses, and comet assays. In our mouse models, AZD6738 monotherapy decreased tumor growth and the combination with cisplatin showed more potent effects on growth inhibition, decreased Ki-67, and increased terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling than monotherapy with each drug. CONCLUSION: In BTC, DDR targeting strategy using ATR inhibitor demonstrated promising antitumor activity alone or in combination with cytotoxic chemotherapeutic agents. This supports further clinical development of DDR targeting strategy in BTC.


Subject(s)
Animals , Apoptosis , Ataxia Telangiectasia , Biliary Tract Neoplasms , Biliary Tract , Cell Cycle , Cell Cycle Checkpoints , Cell Line , Cisplatin , Comet Assay , DNA Damage , DNA Repair , DNA , Humans , Mice , ATP Binding Cassette Transporter, Subfamily B, Member 1
15.
Article in English | WPRIM | ID: wpr-758928

ABSTRACT

This study was performed to evaluate the feasibility of ultrasound-guided computed tomography (CT) cholecystography and to establish an optimal protocol. In 8 healthy beagles, CT cholecystography was conducted using four contrast formulas; two dilution ratios (1:1 vs. 1:3) and two total volumes (8 mL vs. 16 mL) of 300 mgI/kg iohexol after ultrasound-guided percutaneous contrast injection into the gallbladder. CT images were obtained at 3, 10, and 30 min after injection and assessed qualitatively and quantitatively. For all contrast formulas, CT cholecystography showed the gallbladder and the intra- and extrahepatic bile ducts. The volume of the gallbladder and size of bile duct were significantly larger when using a volume of 16 mL iohexol than an 8 mL volume regardless of the dilution ratio. The distinction between the common bile duct and duodenum, the filling of the gallbladder, and the patency of bile duct were effectively assessed using a 16 mL volume of contrast agent with either dilution ratio. Beam-hardening artifacts deteriorated CT image quality for visualizing the biliary system when using the dilution ratio of 1:1. Patency of the bile tract could be easily evaluated using a curvilinear planar reconstruction. There was no significant difference in CT scan time among the different conditions. Minor leakage of contrast agent temporarily occurred after contrast injection in 30% of 32 sets of CT cholecystography. Ultrasound-guided percutaneous cholecystography can visualize both gallbladder and biliary tract with minimal artifacts using a contrast agent volume of 16 mL with a 1:3 dilution ratio.


Subject(s)
Animals , Artifacts , Bile , Bile Ducts , Bile Ducts, Extrahepatic , Biliary Tract , Cholecystography , Common Bile Duct , Contrast Media , Dogs , Duodenum , Gallbladder , Iohexol , Tomography, X-Ray Computed
16.
Article in Korean | WPRIM | ID: wpr-761548

ABSTRACT

EUS currently plays an important role in the diagnosis and treatment of digestive diseases. In addition, EUS-guided sampling has been applied to pancreaticobiliary lesions for the accurate diagnosis of pancreaticobiliary lesions. Many new instruments and studies for EUS-guided sampling are being developed and attempted. This review introduces and summarizes the key recommendations made in the recent guideline for EUS-guided sampling developed by the European Society of Gastrointestinal Endoscopy.


Subject(s)
Biliary Tract , Diagnosis , Endoscopic Ultrasound-Guided Fine Needle Aspiration , Endoscopy, Gastrointestinal , Pancreas , Ultrasonography
17.
Clinical Endoscopy ; : 83-86, 2019.
Article in English | WPRIM | ID: wpr-739694

ABSTRACT

Endoscopic retrograde cholangiopancreatography (ERCP) of the intradiverticular papilla with its invisible orifice remains challenging. Several techniques have been introduced to evert the papillary opening to facilitate cannulation. A 79-year-old woman with bile duct stones underwent ERCP, which revealed that the papilla was located inside a large diverticulum and tended to rotate inward with a trial of papillary cannulation. Submucosal papillary injection of 3 cc of normal saline was performed at 3 and 9 o’clock. Eversion and fixation of a papilla in the diverticulum with this technique allowed selective cannulation of the biliary tree. Stones were retrieved after endoscopic papillary balloon dilation without complications. She had an uneventful post-procedural course. Our findings suggest that submucosal saline injection technique is safe and effective for selective cannulation and can be recommended when cannulation is very difficult because of an intradiverticular papilla.


Subject(s)
Aged , Ampulla of Vater , Bile Ducts , Biliary Tract , Catheterization , Cholangiopancreatography, Endoscopic Retrograde , Diverticulum , Female , Gallstones , Humans
18.
Radiation Oncology Journal ; : 279-285, 2019.
Article | WPRIM | ID: wpr-786561

ABSTRACT

PURPOSE: This study was conducted to compare the outcome of three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) for the postoperative treatment of biliary tract cancer.MATERIALS AND METHODS: From February 2008 to June 2016, 57 patients of biliary tract cancer treated with curative surgery followed by postoperative 3D-CRT (n = 27) or IMRT (n = 30) were retrospectively enrolled.RESULTS: Median follow-up time was 23.6 months (range, 5.2 to 97.6 months) for all patients and 38.4 months (range, 27.0 to 89.2 months) for survivors. Two-year recurrence-free survival is higher in IMRT arm than 3D-CRT arm with a marginal significance (25.9% vs. 47.4%; p = 0.088). Locoregional recurrence-free survival (64.3% vs. 81.7%; p = 0.122) and distant metastasis-free survival (40.3% vs. 55.8%; p = 0.234) at two years did not show any statistical difference between two radiation modalities. In the multivariate analysis, extrahepatic cholangiocarcinoma, poorly-differentiated histologic grade, and higher stage were significant poor prognostic factors for survival. Severe treatment-related toxicity was not significantly different between two arms.CONCLUSIONS: IMRT showed comparable results with 3D-CRT in terms of recurrence, and survival, and radiotherapy toxicity for the postoperative treatment of biliary tract cancer.


Subject(s)
Arm , Biliary Tract Neoplasms , Biliary Tract , Cholangiocarcinoma , Follow-Up Studies , Humans , Multivariate Analysis , Radiotherapy , Radiotherapy, Conformal , Radiotherapy, Intensity-Modulated , Recurrence , Retrospective Studies , Survivors
19.
Article in English | WPRIM | ID: wpr-786457

ABSTRACT

A 36-year-old male patient initially presented with hypertension, tinnitus, bilateral carotid masses, a right jugular foramen, and a periaortic arch mass with an elevated plasma dopamine level but an otherwise normal biochemical profile. On surveillance MRI 4 years after initial presentation, he was found to have a 2.2-cm T2 hyperintense lesion with arterial enhancement adjacent to the gallbladder, which demonstrated avidity on ⁶⁸Ga-DOTATATE PET/CTand retrospectively on ¹⁸F-FDOPA PET/CT but was nonavid on ¹⁸F-FDG PET/CT. Biochemical work-up including plasma catecholamines, metanephrines, and chromogranin A levels were found to be within normal limits. This lesion was surgically resected and was confirmed to be a paraganglioma (PGL) originating from the gallbladder wall on histopathology. Pheochromocytoma (PHEO) and PGL are rare tumors of the autonomic nervous system. Succinate dehydrogenase subunit D (SDHD) pathogenic variants of the succinate dehydrogenase complex are usually involved in parasympathetic, extra-adrenal, multifocal head, and neck PGLs. We report an unusual location of PGL in the gallbladder associated with SDHD mutation which could present as a potential pitfall on ¹⁸F-FDOPA PET/CT as its normal excretion occurs through biliary system and gallbladder. This case highlights the superiority of ⁶⁸Ga-DOTATATE in comparison to ¹⁸F-FDOPA and ¹⁸F-FDG in the detection of SDHD-related parasympathetic PGL.ClinicalTrials.gov Identifier: NCT00004847.


Subject(s)
Adult , Autonomic Nervous System , Biliary Tract , Catecholamines , Chromogranin A , Dopamine , Gallbladder , Head , Humans , Hypertension , Magnetic Resonance Imaging , Male , Neck , Paraganglioma , Pheochromocytoma , Plasma , Positron Emission Tomography Computed Tomography , Retrospective Studies , Succinate Dehydrogenase , Tinnitus
20.
Chinese Journal of Surgery ; (12): 481-487, 2019.
Article in Chinese | WPRIM | ID: wpr-772323

ABSTRACT

The standardized application of antibacterial agents in the treatment of biliary tract diseases is of great significance.On the basis of international and domestic guidelines and consensuses, combining with the actual situation of Chinese biliary tract infection, Study Group of biliary Tract Surgery in Chinese Society of Surgery of Chinese Medical Association and Enhanced Recovery After Surgery Committee of Chinese Research Hospital Association and Editorial Board of Chinese Journal of Surgery organized experts to make recommendations which adopted a problem-oriented approach on the severity grade of biliary tract infection, the protocol of specimen examination, the use of antibiotics, the indication of drug withdrawal, the agents application strategy of drug-resistant bacteria infection and special situation to guide surgeons getting the accurate judgement of the severity of biliary tract infection and the formulation of standard protocols for the use of antibacterial agents on the premise of following the bacteriological and drug resistance monitoring information.


Subject(s)
Anti-Bacterial Agents , Reference Standards , Therapeutic Uses , Bacterial Infections , Drug Therapy , Microbiology , Bile Duct Diseases , Drug Therapy , Microbiology , Biliary Tract , Microbiology , Biliary Tract Surgical Procedures , Consensus , Humans
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