Role of endoscopic ultrasound-guided biliary drainage for palliation of malignant biliary obstruction

Endoscopic ultrasound-guided biliary drainage(EUS-BD)directs bile flow into the digestive tract and has been mostly used in patients with malignant biliary obstruction(MBO)where endoscopic retrograde cholangiopancreatography-guided biliary drainage was unsuccessful or was not feasible.Lumen apposing metal stents(LAMS)are deployed during EUS-BD,with the newer electrocautery-enhanced LAMS reducing procedure time and complication rates due to the inbuilt cautery at the catheter tip.EUS-BD with electrocautery-enhanced LAMS has high technical and clinical success rates for palliation of MBO,with bleeding,cholangitis,and stent occlusion being the most common adverse events.Recent studies have even suggested comparable efficacy between EUS-BD and endosc-opic retrograde cholangiopancreatography as the primary approach for distal MBO.In this editorial,we commented on the article by Peng et al published in the recent issue of the World Journal of Gastrointestinal Surgery in 2024.

Percutaneous transhepatic cholangial drainage-guided methylene blue for fistulotomy using dual-knife for bile duct intubation: A case report

BACKGROUND Difficult bile duct intubation is a big challenge for endoscopists during endoscopic retrograde cholangiopancreatography(ERCP)procedure.We report a case of percutaneous transhepatic cholangial drainage(PTCD)-guided methylene blue for fistulotomy using dual-knife for bile duct intubation.CASE SUMMARY A 50-year-old male patient had developed obstructive jaundice,and ERCP procedure need to be performed to treat the obstructive jaundice.But intubation cannot be performed if the duodenal papilla cannot be identified because of previous surgery for a perforated descending duodenal diverticulum.We used PTCD-guided methylene blue to identify the intramural common bile duct before dual-knife fistulotomy,and bile duct intubation was successfully completed.CONCLUSION The method that combing methylene blue and dual-knife fistulotomy to achieve bile duct intubation during difficult ERCP is safe and effective.

Endoscopic ultrasound-guided biliary drainage

Endoscopic ultrasound(EUS)-guided biliary drainage has emerged as a minimally invasive alternative to percutaneous and surgical interventions for patients with biliary obstruction who had failed endoscopic retrograde cholangiopancreatography(ERCP).EUSguided biliary drainage has become feasible due to the development of large channel curvilinear therapeutic echo-endoscopes and the use of real-time ultrasound and fluoroscopy imaging in addition to standard ERCP devices and techniques.EUS-guided biliary drainage is an attractive option because of its minimally invasive,single step procedure which provides internal biliary decompression.Multiple investigators have reported high success and low complication rates.Unfortunately,high quality prospective data are still lacking.We provide detailed review of the use of EUS for biliary drainage from the perspective of practicing endoscopists with specific focus on the technical aspects of the procedure.

Endoscopic ultrasound-guided biliary drainage-current status and future perspectives

Endoscopic retrograde cholangiopancreatography(ERCP)with stenting is the treatment modality of choice for patients with benign and malignant bile duct obstruction.ERCP could fail in cases of duodenal obstruction,duodenal diverticulum,ampullary neoplastic infiltration or surgically altered anatomy.In these cases percutaneous biliary drainage(PTBD)is traditionally used as a rescue procedure but is related to high morbidity and mortality and lower quality of life.Endoscopic ultrasound-guided biliary drainage(EUS-BD)is a relatively new interventional procedure that arose due to the development of curvilinear echoendoscope and the various endoscopic devices.A large amount of data is already collected that proves its efficacy,safety and ability to replace PTBD in cases of ERCP failure.It is also possible that EUS-BD could be chosen as a first-line treatment option in some clinical scenarios in the near future.Several EUS-BD techniques are developed EUS-guided transmural stenting,antegrade stenting and rendezvous technique and can be personalized depending on the individual anatomy.EUS-BD is normally performed in the same session from the same endoscopist in case of ERCP failure.The lack of training,absence of enough dedicated devices and lack of standardization still makes EUS-BD a difficult and not very popular procedure,which is related to life-threatening adverse events.Developing training models,dedicated devices and guidelines hopefully will make EUS-BD easier,safer and well accepted in the future.This paper focuses on the technical aspects of the different EUS-BD procedures,available literature data,advantages,negative aspects and the future perspectives of these modalities.

Endoscopic ultrasound guided biliary and pancreatic duct interventions

When endoscopic retrograde cholangio-pancreatog-raphy fails to decompress the pancreatic or biliary system, alternative interventions are required. In this situation, endosonography guided cholangio-pancrea-tography(ESCP), percutaneous radiological therapy or surgery can be considered. Small case series reporting the initial experience with ESCP have been superseded by comprehensive reports of large cohorts. Although these reports are predominantly retrospective, they demonstrate that endoscopic ultrasound(EUS) guided biliary and pancreatic interventions are associated with high levels of technical and clinical success. The proce-dural complication rates are lower than those seen with percutaneous therapy or surgery. This article describes and discusses data published in the last five years relat-ing to EUS-guided biliary and pancreatic intervention.

Endoscopic ultrasound-guided pancreaticogastrostomy for symptomatic pancreatic duct obstruction caused by migrated pancreatic stent

Endoscopic pancreatic stenting has been widely used in various pancreatic conditions. With the increasing use of pancreatic stents, many complications have been recognized. Especially, proximal stent migration presents a serious condition because of subsequent pancreatic duct obstruction, impaired drainage, ductal dilation, and pancreatic pain. Although endoscopic retrieval is the preferred treatment for proximally migrated pancreatic stents, it is not always successful, resulting in conversion to surgery. To date, endoscopic ultrasound-guided pancreatic duct drainage(EUS-PD) has never been reported for treatment of pancreatic duct obstruction caused by proximally migrated pancreatic stent. We herein describe a case of pancreatic duct rupture and obstruction caused by proximally migrated pancreatic stent that was successfully treated by EUS-guided pancreaticogastrostomy while keeping the former stent in situ after failed endoscopic retrograde cholangiopancreatography. We believe that this report adds to the increasing evidence of symptomatic pancreatic duct obstruction being successfully treated by EUS-PD.

Endoscopic ultrasound in chronic pancreatitis: Where are we now?

Endoscopic ultrasonography (EUS) is well suited for assessment of the pancreas due to its high resolution and the proximity of the transducer to the pancreas, avoiding air in the gut. Evaluation of chronic pancreatitis (CP) was an early target for EUS, initially just for diagnosis but later for therapeutic purposes. The diagnosis of CP is still accomplished using the standard scoring based on nine criteria, all considered to be of equal value. For diagnosis of any CP, at least three or four criteria must be fulf illed, but for diagnosis of severe CP at least six criteria are necessary. The Rosemont classif ication, more restrictive, aims to standardize the criteria and assigns different values to different features, but requires further validation. EUS-f ine needle aspiration (EUS-FNA) is less advisable for diagnosis of diffuse CP due to its potential side effects. Elastography and contrast-enhanced EUS are orientation in differentiating a focal pancreatic mass in a parenchyma with features of CP, but they cannot replace EUS-FNA. The usefulness of EUS-guided celiac block for painful CP is still being debated with regard to the best technique and the indications. EUS-guided drainage of pseudocysts is preferred in non-bulging pseudocysts or in the presence of portal hypertension. EUS-guided drainage of the main pancreatic duct should be reserved for cases in which endoscopic retrograde cholangiopancreatography has failed owing to difficult cannulation of the papilla or diff icult endotherapy. It should be performed only by highly skilled endoscopists, due to the high rate of complications.

Usefulness of endoscopic ultrasound-guided fine needle aspiration in the diagnosis of hepatic, gallbladder and biliary tract Lesions

Endoscopic ultrasound(EUS)-guided fine needle aspira-tion(FNA) of the liver is a safe procedure in the diag-nosis and staging of hepatobiliary malignancies with a minimal major complication rate. EUS-FNA is useful for liver lesions poorly accessible to other imaging modali-ties of the liver. EUS-guided FNA of biliary neoplasia and malignant biliary stricture is superior to the con-ventional endoscopic brushing and biopsy.

Endoscopic management of acute cholangitis in elderly patients

AIM: To evaluate clinical presentation, etiology, compli-cations and response to treatment in elderly patients with acute cholangitis.METHODS: Demographics, etiology of biliary obstruc-tion, clinical features, complications and associated systemic diseases of 175 patients with acute cholangitis were recorded. Endoscopic biliary drainage was performed using nasobiliary drain or stent. The complications related to ERCP, success of biliary drainage, morbidity, mortality and length of hospital stay were evaluated. RESULTS: Of 175 patients, 52 aged ≥ 60 years (groupⅠ, age < 60 years; group Ⅱ, age ≥ 60 years) and 105 were men. Fever was present in 38 of 52 patients of group Ⅱ compared to 120 of 123 in groupⅠ. High fever (fever ≥ 38.0℃) was more common in groupⅠ(118/120 vs 18/38). Hypotension (5/123 vs 13/52), altered sensorium (3/123 vs 19/52), peritonism (22/123 vs 14/52), renal failure (5/123 vs 14/52) and associated comorbid diseases (4/123 vs 21/52) were more common in group Ⅱ. Biliopancreatic malignancy was a common cause of biliary obstruction in group Ⅱ (n = 34) and benign diseases in groupⅠ(n = 120). Indications for biliary drainage were any one of the following either singly or in combination: a fever of ≥ 38.0℃ (n = 136), hypotension (n = 18), peritonism (n = 36), altered sensorium (n = 22), and failure to improve within 72 h of conservative management (n = 22). High grade fever was more common indication of biliary drainage in groupⅠand hypotension, altered sensorium, peritonism and failure to improve within 72 h of conservative management were more common indications in group Ⅱ. Endoscopic biliary drainage was achieved in 172 patients (nasobiliary drain: 56 groupⅠ, 24 group Ⅱ, stent: 64 groupⅠ, 28 group Ⅱ) without any significant age related difference in the success rate. Abdominalpain, fever, jaundice, hypotension, altered sensorium, peritonism and renal failure improved after median time of 5 d in 120 patients in groupⅠ(2-15 d) compared to 10 d in 47 patients of group Ⅱ (3-20 d). Normalization of leucocyte count was seen after a median time of 7 d (3-20 d) in 120 patients in groupⅠcompared to 15 d (5-26 d) in 47 patients in group Ⅱ. There were no ERCP related complications in either group. Five patients (carcinoma gallbladder n = 3, CBD stones n = 2) died in group Ⅱ and they had undergone biliary drainage after failure of response to conservative management for 72 h. There was a higher mortality in patients in group Ⅱ despite successful biliary drainage (0/120 vs 5 /52). Length of hospital stay was longer in group Ⅱ patients (16.4 ± 5.6, 7-30 d) than in groupⅠpatients (8.2 ± 2.4, 7-20 d).CONCLUSION: Elderly patients with acute cholangitis have a high incidence of severe cholangitis, concomitant medical illnesses, hypotension, altered sensorium, peritonism, renal failure and higher mortality even after successful biliary drainage.

Transnasal endoscopic retrograde chalangiopancreatography using an ultrathin endoscope: A prospective comparison with a routine oral procedure

AIM: To investigate if transnasal endoscopic retrograde cholangiopancreatography (n-ERCP) using an ultrathin forward-viewing scope may overcome the disadvantages of conventional oral ERCP (o-ERCP) related to the large- caliber side-viewing duodenoscope. METHODS: The study involved 50 patients in whom 25 cases each were assigned to the o-ERCP and n-ERCP groups. We compared the requirements of esophagogastroduodenoscopy (EGD) prior to ERCP, rates and times required for successful cannulation into the pancreatobiliary ducts, incidence of post-procedure hyperamylasemia, cardiovascular parameters during the procedure, the dose of a sedative drug, and successful rates of endoscopic naso-biliary drainage (ENBD). RESULTS: Screening gastrointestinal observations were easily performed by the forward-viewing scope and thus no prior EGD was required in the n-ERCP group. There was no significant difference in the rates or times for cannulation, or incidence of hyperamylasemia between the groups. However, the cannulation was relatively difficult in n-ERCP when the scope appeared U-shape under fluoroscopy. Increments of blood pressure and the amount of a sedative drug were significantly lower in the n-ERCP group. ENBD was successfully performed succeeding to the n-ERCP in which mouth-to-nose transfer of the drainage tube was not required. CONCLUSION: n-ERCP is likely a well-tolerable methodwith less cardiovascular stress and no need of prior EGD or mouth-to-nose transfer of the ENBD tube. However, a deliberate application is needed since its performance is difficult in some cases and is not feasible for some endoscopic treatments such as stenting.

Pancreatico-biliary endoscopic ultrasound:A systematic review of the levels of evidence,performance and outcomes

Our aim was to record pancreaticobiliary endoscopic ultrasound(EUS) literature of the past 3 decades and evaluate its role based on a critical appraisal of published studies according to levels of evidence(LE).Original research articles(randomized controlled trials,prospective and retrospective studies),meta-analyses,reviews and surveys pertinent to gastrointestinal EUS were included.All articles published until September 2011 were retrieved from PubMed and classified according to specific disease entities,anatomical subdivisions and therapeutic applications of EUS.The North of England evidencebased guidelines were used to determine LE.A total of 1089 pertinent articles were reviewed.Published research focused primarily on solid pancreatic neoplasms,followed by disorders of the extrahepatic biliary tree,pancreatic cystic lesions,therapeutic-interventional EUS,chronic and acute pancreatitis.A uniform observation in all six categories of articles was the predominance of LE Ⅲ studies followed by LE Ⅳ,Ⅱb,Ⅱa,Ⅰb and Ⅰ a,in descending order.EUS remains the most accurate method for detecting small(< 3 cm) pancreatic tumors,ampullary neoplasms and small(< 4 mm) bile duct stones,and the best test to define vascular invasion in pancreatic and peri-ampullary neoplasms.Detailed EUS imaging,along with biochemical and molecular cyst fluid analysis,improve the differentiation of pancreatic cysts and help predict their malignant potential.Early diagnosis of chronic pancreatitis appears feasible and reliable.Novel imaging techniques(contrast-enhanced EUS,elastography) seem promising for the evaluation of pancreatic cancer and autoimmune pancreatitis.Therapeutic applications currently involve pancreaticobiliary drainage and targeted fine needle injection-guided antitumor therapy.Despite the ongoing development of extra-corporeal imaging modalities,such as computed tomography,magnetic resonance imaging,and positron emission tomography,EUS still holds a leading role in the investigation of the pancreaticobiliary area.The major challenge of EUS evolution is its expanding therapeutic potential towards an effective and minimally invasive management of complex pancreaticobiliary disorders.

Chronic pancreatic pain successfully treated by endoscopic ultrasound-guided pancreaticogastrostomy using fully covered self-expandable metallic stent

One of the most common symptoms presenting in patients with chronic pancreatitis is pancreatic-type pain.Obstruction of the main pancreatic duct in chronic pancreatitis can be treated by a multitude of therapeutic approaches,ranging from pharmacologic,endoscopic and radiologic treatments to surgical interventions.When the conservative treatment approaches fail to resolve symptomatic cases,however,endoscopic retrograde pancreatography with pancreatic duct drainage is the preferred second approach,despite its well-recognized drawbacks.When the conventional transpapillary approach fails to achieve the necessary drainage,the patients may benefit from application of the less invasive endoscopic ultrasound(EUS)-guided pancreatic duct interventions.Here,we describe the case of a 42-year-old man who presented with severe abdominal pain that had lasted for 3 mo.Computed tomography scanning showed evidence of chronic obstructive pancreatitis with pancreatic duct stricture at genu.After conventional endoscopic retrograde pancreaticography failed to eliminate the symptoms,EUS-guided pancreaticogastrostomy(PGS)was applied using a fully covered,self-expandable,10-mm diameter metallic stent.The treatment resolved the case and the patient experienced no adverse events.EUS-guided PGS with a regular biliary fully covered,self-expandable metallic stent effectively and safely treated pancreatictype pain in chronic pancreatitis.

Advances in the endoscopic management of pancreatic collections

Treatment of pancreatic collections has experienced great progress in recent years with the emergence of alternative minimally invasive techniques comparing to the classic surgical treatment. Such techniques have been shown to improve outcomes of morbidity vs surgical treatment. The recent emergence of endoscopic drainage is noteworthy. The advent of endoscopic ultrasonography has been crucial for treatment of these specific lesions. They can be characterized, their relationships with neighboring structures can be evaluated and the drainage guided by this technique has been clearly improved compared with the conventional endoscopic drainage. Computed tomography is the technique of choice to characterize the recently published new classification of pancreatic collections. For this reason, the radiologist's role establishing and classifying in a rigorously manner the collections according to the new nomenclature is essential to making therapeutic decisions. Ideal scenario for comprehensive treatment of these collections would be those centers with endoscopic ultrasound and interventional radiology expertise together with hepatobiliopancreatic surgery. This review describes the different types of pancreatic collections: acute peripancreatic fluid collection, pancreatic pseudocysts, acute necrotic collection and walled-off necrosis; the indications and the contraindications for endoscopic drainage, the drainage technique and their outcomes. The integrated management of pancreatic collections according to their type and evolution time is discussed.

术前不同减黄策略对胰腺癌手术疗效及预后的影响研究

目的观察术前不同减黄策略对胰腺癌患者手术疗效及预后的影响。方法本研究为前瞻性研究,以郑州大学第一附属医院2021年1月至2022年12月收治的119例胰腺癌患者为研究对象,基于随机、对照原则,采用电脑分组法将入组患者分为A组(60例)B组(69例),A组术前采用内镜下逆行胆管引流术(ERBD)治疗,B组术前采用经皮肝胆管穿刺引流术(PTBD)治疗,所有患者术后开展为期1年随访,比较2组患者的肝功能、凝血功能、营养状态、并发症发生、治疗及远期生存情况。结果在不同术前减黄策略下,A组患者的丙氨酸转氨酶(ALT)天冬氨酸转氨酶(AST)总胆红素(TBil)分别为(35±5)U/L、(35±5)U/L、(15±3)μmol/L,均低于B组[(39±5)U/L、(38±5)U/L、(18±3)μmol/L];A组患者的活化部分凝血活酶时间(APTT)凝血酶原时间(PT)凝血时间(TT)分别为(8±5)s、(1±3)s、(7±3)s,均低于B组[(62±5)s、(3±3)、(9±3)s];A组患者的血红蛋白(Hb)总蛋白(TA)白蛋白(ALB)分别为(18±20)g/L、(66±10)g/L、(45±10)g/L,均高于B组[(104±20)g/L、(60±10)g/L、(40±10)g/L];A组患者的并发症发生率6.7%(4/60)低于B组20.3%(12/59);A组患者的减黄时间、住院时间、30d内死亡率分别为(14±3)d、(65±5)d、1.7%(1/60),均低于B组[(17±3)d、(69±5)d、15.2%(9/59)];中位无进展生存期(PFS)中位总生存期(OS)分别为(10.2±2.2)月、(1.5±3.2)月,均高于B组[(8.3±1.3)月、(9.4±2.2)月](P<0.05)。结论术前实施ERBD能有效改善胰腺癌患者的肝功能、凝血功能及营养状态,对加快患者康复进程、降低并发症发生风险并延长生存周期均有积极意义。

超声内镜引导下胰管引流术治疗进展

各种原因引起的胰管梗阻,易诱发腹痛和胰腺炎,需要胰管引流治疗。随着内镜微创介入技术发展,无法手术切除的胰腺肿瘤和良性病变所致的胰管梗阻首选内镜下的引流已形成共识。超声内镜引导下胰管引流术(endoscopic ultrasound-guided pancreatic duct drainage,EUS-PDD)可以较好解决无法行经内镜逆行胰造影术(endoscopic retrograde pancreatography,ERP)或ERP失败的患者,丰富和完善了胰管引流的内镜下治疗手段。本文主要对病例选择、术式和手术器件选择、操作成功率、并发症及长期疗效的新进展进行总结,期望有助于临床医师对EUS-PDD有全面了解。

内镜鼻胆囊引流治疗胆总管结石合并急性化脓性胆囊炎

目的 评估内镜鼻胆囊引流(ENGD)治疗胆总管结石合并急性化脓性胆囊炎的安全性和有效性。方法 回顾性纳入2023年1—12月大连医科大学附属第一医院及同济大学附属东方医院收治的46例胆总管结石合并急性化脓性胆囊炎患者,其中21例行内镜逆行胰胆管造影(ERCP)取石+ENGD治疗(ENGD组),另外25例行ERCP取石+经皮肝穿刺胆管引流(PTGD)(PTGD组),比较两组操作成功率、手术时间、并发症发生率、不良事件发生率、住院时间、治疗费用、患者满意度,以及二期腹腔镜胆囊切除(LC)手术时间、并发症发生率、腹腔引流管留置率及住院时间。结果 两组患者操作成功率均为100%。ENGD组和PTGD组在手术时间[(46.4±4.8)min vs (55.0±6.0)min]、治疗费用[(3.2±0.3)万元vs (3.5±0.3)万元]、患者满意度[5(5,5)分vs 4(4,5)分]方面的比较,差异具有统计学意义(P<0.05);ENGD组二期LC手术时间[(45.4±7.0)min vs (58.4±9.2)min]、并发症发生率[1(4.8%) vs 7(28.0%)]、腹腔引流管留置率[10(47.6%) vs 23(92.0%)]及住院时间[(3.6±0.7)d vs (4.7±0.6)d]均低于PTGD组,差异具有统计学意义(P<0.05)。结论 ENGD治疗胆总管结石合并急性化脓性胆囊炎安全、有效,患者满意度高,并能降低LC风险。

Non-surgical treatment of post-surgical bile duct injury: Clinical implications and outcomes

AIM: To investigate the prognostic factors determining the success rate of non-surgical treatment in the management of post-operative bile duct injuries (BDIs).

Biliary metal stents should be placed near the hilar duct in distal malignant biliary stricture patients

BACKGROUND Endoscopic biliary drainage using a self-expandable metallic stent(SEMS)has been widely performed to treat distal malignant biliary obstruction(DMBO).However,the optimal position of the stent remains unclear.AIM To determine the ideal position for SEMS placement.METHODS In total,135 DMBO patients underwent SEMS(uncovered or covered)placement over a ten-year period.A total of 127 patients with biliary obstruction between the junction of the cystic duct and Vater’s papilla were enrolled.An SEMS was placed through the upper common bile duct 2 cm from the biliary hilar duct in 83 patients(Hilar group)or near the top of the biliary obstruction in 44 patients(Lower group).Technical and functional success,adverse events,and risk factors for SEMS dysfunction were evaluated.RESULTS The stent patency period was significantly longer in the Hilar group than in the Lower group(P value<0.01).In multivariate analysis,the only statistically significant risk factor for SEMS dysfunction was being in the Lower group(hazard ratio:9.94,95%confidence interval:2.25–44.0,P<0.01).CONCLUSION A longer patency period was achieved by positioning the SEMS near the biliary hilar duct.

ERBD+LCBDE与ENBD+ERCP/EST在胆总管结石合并中重度急性胆管炎中的近期疗效对比

目的比较内镜下胆道支架引流(ERBD)+腹腔镜下胆总管探查(LCBDE)与内镜下鼻胆管引流(ENBD)+经内镜逆行胰胆管造影(ERCP)/内镜下乳头括约肌切开(EST)治疗在胆总管结石合并中重度急性胆管炎中的应用效果,探索理想的治疗组合方式。方法回顾性分析华东师范大学附属芜湖医院2020年1月至2021年6月收治的44例胆总管结石合并中重度急性胆管炎患者的临床资料。其中19例经ERBD引流后二期行LCBDE,作为研究组(n=19);25例经ENBD引流后二期行ERCP/EST取石治疗,作为对照组(n=25)。比较两种治疗方案的近期疗效差异。结果两组患者一般资料比较差异无统计学意义(P>0.05)。胆道引流前后,两组肝功能(TBIL、ALT、γ-GTP、ALP)及感染性指标(WBC、CRP、PCT),组间比较均无统计学差异(P>0.05);组内比较,引流后两组肝功能和感染性指标均较引流前明显下降,差异具有统计学意义(P<0.05)。两组住院总时间、住院总费用、取石成功率均无统计学差异(P>0.05)。研究组一次性结石取净率高于对照组[94.74%(18/19)vs 64.00%(16/25),χ^(2)=4.189,P=0.041],且近期总并发症发生率低于对照组[10.53%(2/19)vs 44.00%(11/25),χ^(2)=5.811,P=0.016]。结论ERBD+LCBDE、ENBD+ERCP/EST两种方案治疗胆总管结石(长径≥15 mm或结石数目≥3枚)合并中重度急性胆管炎均安全有效,但ERBD+LCBDE较ENBD+ERCP/EST在一次性结石清除率、近期并发症发生率方面更具优势。

鼻内镜下泪囊鼻腔吻合术治疗二种慢性泪囊炎的疗效分析

目的比较鼻内镜下泪囊鼻腔吻合术治疗单纯性慢性泪囊炎与泪道置管术后复发性泪囊炎的疗效观察。方法选取2016年4月至2020年4月于山西省运城市中心医院就诊的慢性泪囊炎病人100例,均选择单眼,共100只眼行回顾性分析;将所有病人分为两组:单纯组和复发组,各50例,50只眼;所有病人均行鼻内镜下泪囊鼻腔吻合术治疗,术后随访6个月,并分析病人术后的治疗效果。结果术后6月时单纯组的总有效率为92%,复发组的总有效率为76%,单纯组明显高于复发组,两组比较差异有统计学意义(Z=−2.17,P<0.05)。结论泪道置管术后复发性泪囊炎经鼻内镜下泪囊鼻腔吻合术治疗,其手术效果明显低于单纯性慢性泪囊炎。