治疗性经内镜逆行胰胆管造影在慢性胰腺炎患者中的应用

目的：探讨治疗性经内镜逆行胰胆管造影（ERCP）在慢性胰腺炎（CP）治疗中的价值。方法对2008年1月－2012年12月间在南京医科大学附属苏州市立医院应用 ERCP 治疗的30例 CP 患者进行回顾性分析。观察术前及术后24h 血淀粉酶变化,动态观察患者治疗前后腹痛缓解情况,随访脂肪泻、焦虑患者病情,定期复查腹部影像学或 ERCP 明确胰腺病变及胰管支架情况。结果所有患者均顺利完成 ERCP 并放置胰管支架,术后72 h 腹痛缓解率83．3％,1例因症状改善不明显至外科手术,术后病死率为0。结论ERCP 是治疗 CP 的有效手段,具有安全、有效、创伤小等优点。     

Incidence and risk factors for post-ERCP pancreatitis in pancreas divisum patients without chronic pancreatitis

Abstract

Aims: The studies on post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) in pancreas divisum (PD) patients without chronic pancreatitis (CP) are rare. In this study, we aimed to evaluate the incidence of PEP in PD patients without CP and the risk and protective factors for PEP.

Methods: Consecutive patients with symptomatic PD that underwent ERCP from January 2005 to December 2017 were retrospectively analyzed. The patients were divided into PD without CP group and CP group. The basic information and medical records of patients were collected. The risk and protective factors for PEP in PD patients without CP were analyzed by univariate logistic analysis.

Results: A total of 89 ERCP procedures were performed in 51 PD patients without CP, and 249 procedures in 136 patients with CP. The incidence of PEP was significantly higher in PD patients without CP than those with CP (15.7% vs. 5.6%, p?=?.005). Female gender were independent risk factors for PEP, while dorsal duct stent placement was a protective factor.

Conclusion: CP may be a protective factor against PEP in PD patients. Female was a risk factor for PEP in PD patients and dorsal duct stent placement was a preventive factor that reduced the incidence of PEP in PD patients without CP.     

Endotherapy in chronic pancreatitis

Chronic pancreatitis(CP)is a progressive disease with irreversible changes in the pancreas.Patients commonly present with pain and with exocrine or endocrine insufficiency.All therapeutic efforts in CP are directed towards relief of pain as well as the management of associated complications.Endoscopic therapy offers many advantages in patients with CP who present with ductal calculi,strictures,ductal leaks,pseudocyst or associated biliary strictures.Endotherapy offers a high rate of success with low morbidity in properly selected patients.The procedure can be repeated and failed endotherapy is not a hindrance to subsequent surgery.Endoscopic pancreatic sphincterotomy is helpful in patients with CP with minimal ductal changes while minor papilla sphincterotomy provides relief in patients with pancreas divisum and chronic pancreatitis.Extracorporeal shock wave lithotripsy is the standard of care in patients with large pancreatic ductal calculi.Long term follow up has shown pain relief in over 60%of patients.A transpapillary stent placed across the disruption provides relief in over 90%of patients with ductal leaks.Pancreatic ductal strictures are managed by single large bore stents.Multiple stents are placed for refractorystrictures.CP associated benign biliary strictures(BBS)are best treated with multiple plastic stents,as the response to a single plastic stent is poor.Covered self expanding metal stents are increasingly being used in the management of BBS though further long term studies are needed.Pseudocysts are best drained endoscopically with a success rate of 80%-95%at most centers.Endosonography(EUS)has added to the therapeutic armamentarium in the management of patients with CP.Drainage of pseudcysts,cannulation of inaccessible pancreatic ducts and celiac ganglion block in patients with intractable pain are all performed using EUS.Endotherapy should be offered as the first line of therapy in properly selected patients with CP who have failed to respond to medical therapy and require intervention.     

Evaluating the role of imaging methods in the diagnosis of chronic pancreatitis

OBJECTIVE: To evaluate the role of imaging methods in the diagnosis of chronic pancreatitis (CP) in improving the accuracy of a clinical diagnosis of CP. METHODS: The results of the imaging methods used for 129 cases diagnosed as CP in Peking Union Medical College Hospital from 1991 to 2000 were retrospectively analyzed. The imaging methods included ultrasonography (US), computed tomography (CT), endoscopic retrograde cholangiopancreatography (ERCP), magnetic resonance cholangiopancreatography (MRCP) and endoscopic ultrasonography (EUS). RESULTS: The sensitivity of EUS and MRCP was high and was in good agreement with ERCP in the diagnosis of CP. The sensitivity of ERCP was superior to US and CT (P < 0.05). The sensitivity of US and CT for diagnosing dilation of the pancreatic duct was 59.4% and 60%, respectively, the specificity was 93.8% and 95.7%, respectively. BT‐PABA had a better correlation with ERCP in the group with severe changes of the pancreatic duct than in the mild or moderate group. The more complications of CP that were present, the more severe the lesions of the pancreatic duct. CONCLUSION: Among the traditional imaging modalities for diagnosing CP, ERCP is the most sensitive. MRCP and EUS, the promising and novel examination techniques, have high sensitivity and good agreement with ERCP.     

ERCP in acute biliary pancreatitis

The role of urgent endoscopic retrograde cholangiopancreatography (ERCP) in acute biliary pancreatitis is for many years a subject for disagreement among physicians. Although the evidence seemed to be in favor of performing ERCP, endoscopists usually hesitate to conform to the guidelines. ERCP is an invasive procedure, with complications which can affect patients' outcome. Recent evidence suggests that we should probably modify our policy, recruiting less invasive procedures, like magnetic resonance cholangiopancreatography and endoscopic ultrasound, before conducting ERCP in patients with acute biliary pancreatitis. In this editorial the different aspects regarding the role of ERCP in acute biliary pancreatitis are discussed.     

Current approaches and questions yet to be resolved for the prophylaxis of post-endoscopic retrograde cholangiopancreatography pancreatitis

Prophylaxis is important for post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP), which is the most common and serious complication of ERCP. Although the current guidelines include independent patient- and procedure-related risk factors for PEP and available PEP prophylactic measures, the synergistic effect of these risk factors on PEP should also be considered, given that patients often harbor multiple risk factors. Furthermore, a combination of prophylactic measures is often selected in clinical practice. However, established methods estimating the synergistic effect of independent risk factors on PEP incidence are lacking, and evidence on the impact of combining prophylactic measures on PEP should be discussed. Selection of appropriate candidate patients for ERCP is also important to reduce the incidence of PEP associated with unnecessary ERCP. ERCP indications in patients with asymptomatic common bile duct stones (CBDSs) and in those with suspected CBDSs with no imaging-based evidence of stones are controversial. Further studies are warranted to predict the synergistic effect of independent risk factors on PEP, determine the best prophylactic PEP measures, and identify appropriate candidates for ERCP in patients with asymptomatic CBDSs and those with suspected CBDSs.     

儿童胰腺炎ERCP术后并发症研究

目的 分析儿童胰腺炎患者经内镜逆行胰胆管造影(endoscopic retrograde cholangiop-ancreatography,ERCP)术后高淀粉酶血症、胰腺炎及出血等并发症的发生率,探讨其安全性。方法 回顾分析1997年2月～2002年2月间入住我科确诊为儿童胰腺炎并行ERCP术的27例患者的临床资料,其中急性胰腺炎(acute pancreatitis,AP)14例,慢性胰腺炎(chronic pancreatitis,CP)13例;诊断性ERCP 9例,治疗性ERCP18例。结果 27例患者ERCP术后总体并发症发生率为51.85％(l4/27),其中,高淀粉酶血症发生率22.22％(6/27),术后4、24h血清淀粉酶水平分别为(410.75±230.31)U/L、(367.25±233.90)U/L,48～72h后均恢复正常;胰腺炎发生率22.22％(6/27),均为轻型胰腺炎;乳头切开处出血、黑便发生率7.41％(2/27),均发生于胆总管结石行十二指肠乳头括约肌切开(endoscopicsphincterotomy,EST)+取石术后;诊断性ERCP组并发症的发生率低于治疗性ERCP组,但无统计学意义。结论 儿童胰腺炎患者ERCP术后具有较高的并发症发生率,内镜医师于ERCP术中应高度重视,采取必要的预防措施以减少并发症的发生。     

Updated meta-analysis of pancreatic stent placement in preventing post-endoscopic retrograde cholangiopancreatography pancreatitis

AIM: To investigate the efficacy and safety profile of pancreatic duct (PD) stent placement for prevention of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP).METHODS: We performed a search of MEDLINE, EMBASE, and Cochrane Library to identify randomized controlled clinical trials of prophylactic PD stent placement after ERCP. RevMan 5 software provided by Cochrane was used for the heterogeneity and efficacy analyses, and a meta-analysis was performed for the data that showed homogeneity. Categorical data are presented as relative risks and 95% confidence intervals (CIs), and measurement data are presented as weighted mean differences and 95%CIs.RESULTS: The incidence rates of severe pancreatitis, operation failure, complications and patient pain severity were analyzed. Data on pancreatitis incidence were reported in 14 of 15 trials. There was no significant heterogeneity between the trials (I² = 0%, P = 0.93). In the stent group, 49 of the 1233 patients suffered from PEP, compared to 133 of the 1277 patients in the no-stent group. The results of this meta-analysis indicate that it may be possible to prevent PEP by placing a PD stent.CONCLUSION: PD stent placement can reduce postoperative hyperamylasemia and might be an effective and safe option to prevent PEP if the operation indications are well controlled.     

选择性插管对ERCP术后胰腺炎的预防作用

目的研究选择性插管对ERCP术后胰腺炎的预防作用。方法随机抽取在我院2009年至2011年因胆系疾病行ERCP检查和治疗的212例患者,按随机数字法分成常规插管造影组（常规组）100例和导丝超选组（导丝组）112例,监测两组血清淀粉酶波动情况,统计两组ERCP术后胰腺炎（PEP）发生率,回顾性分析选择性插管和PEP发生率的关系。结果两组插管成功率无统计学差异（P〉0.05）,常规组超作时间较导丝组长,常规组PEP发生率为13%,明显高于导丝组的5.36%（P〈0.05）,常规组有4例出现重症PEP,导丝组有3例重症PEP。结论 ERCP操作中应用导丝进行目标胆管选择性插管不能明显提高插管成功率,但能有效降低PEP发生率。     

Usefulness of serum lipase for early diagnosis of post-endoscopic retrograde cholangiopancreatography pancreatitis

BACKGROUND Post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis(PEP)is new onset acute pancreatitis after ERCP. This complication is sometimes fatal.As such, PEP should be diagnosed early so that therapeutic interventions can be carried out. Serum lipase(s-Lip) is useful for diagnosing acute pancreatitis.However, its usefulness for diagnosing PEP has not been sufficiently investigated.AIM This study aimed to retrospectively examine the usefulness of s-Lip for the early diagnosis of PEP.METHODS We retrospectively examined 4192 patients who underwent ERCP at our two hospitals over the last 5 years. The primary outcomes were a comparison of the areas under the receiver operating characteristic(ROC) curves(AUCs) of s-Lip and serum amylase(s-Amy), s-Lip and s-Amy cutoff values based on the presence or absence of PEP in the early stage after ERCP via ROC curves, and the diagnostic properties [sensitivities, specificities, positive predictive values(PPV),and negative predictive value(NPV)] of these cutoff values for PEP diagnosis.RESULTS Based on the eligibility and exclusion criteria, 804 cases were registered. Over the entire course, PEP occurred in 78 patients(9.7%). It occurred in the early stage after ERCP in 40 patients(51.3%) and in the late stage after ERCP in 38 patients(48.7%). The AUCs were 0.908 for s-Lip [95% confidence interval(CI): 0.880-0.940,P 0.001] and 0.880 for s-Amy(95%CI: 0.846-0.915, P 0.001), indicating both are useful for early diagnosis. By comparing the AUCs, s-Lip was found to be significantly more useful for the early diagnosis of PEP than s-Amy(P = 0.023).The optimal cutoff values calculated from the ROC curves were 342 U/L for s-Lip(sensitivity, 0.859; specificity, 0.867; PPV, 0.405; NPV, 0.981) and 171 U/L for sAmy(sensitivity, 0.859; specificity, 0.763; PPV, 0.277; NPV, 0.979).CONCLUSION S-Lip was significantly more useful for the early diagnosis of PEP. Measuring sLip after ERCP could help diagnose PEP earlier; hence, therapeutic interventions can be provided earlier.     

Prophecy about post-endoscopic retrograde cholangiopancreatography pancreatitis:From divination to science

One unresolved issue of endoscopic retrograde cholangiopancreatography(ERCP)is post-ERCP pancreatitis (PEP),which occurs in up to 40%of patients.Identification of risk factors for PEP is especially important in the field of ERCP practice because it may assist physicians in taking protective measures in situations with high risk.A decade ago,Freeman et al meticulously evaluated a large number of potentially relevant risk factors for PEP,which can be divided into patient-relat-ed and procedure-related issues.In this commentary, we summarize this classic article and reevaluate the risk factors for PEP from the current point of view.This is followed by assessment of strategies for prevention of PEP that can be divided into mechanical and pharmacologic methods.     

Relationship between post-ERCP pancreatitis and the change of serum amylase level after the procedure

AIM： To clarify the relationship between the change of serum amylase level and post-ERCP pancreatitis.
METHODS： Between January 1999 and December 2002, 1291 ERCP-related procedures were performed. Serum amylase concentrations were measured before the procedure and 3, 6, and 24 h afterward. The frequency and severity of post-ERCP pancreatitis and the relationship between these phenomena and the change in amylase level were estimated.
RESULTS： Post-ERCP pancreatitis occurred in 47 patients （3.6%）. Pancreatitis occurred in 1% of patients with normal amylase levels 3 h after ERCP, and in 1%, 5%, 20%, 31% and 39% of patients with amylase levels elevated 1-2 times, 2-3 times, 3-5 times, 5-10 times and over 10 times the upper normal limit at 3 h after ERCP, respectively （level 〈 2 times vs ≥ 2 times, P 〈 0.001）. Of the 143 patients with levels higher than the normal limit at 3 h after ERCP followed by elevation at 6 h, pancreatitis occurred in 26%. In contrast, pancreatitis occurred in 9% of 45 patients with a level higher than two times the normal limit at 3 h after ERCP followed by a decrease at 6 h （26% vs 9%, P 〈 0.05）.
CONCLUSION： Post-ERCP pancreatitis is frequently associated with an increase in serum amylase level greater than twice the normal limit at 3 h after ERCP with an elevation at 6 h. A decrease in amylase level at 6 h after ERCP suggests the unlikelihood of development of post-ERCP pancreatitis.     

细胞因子与内镜逆行胰胆管造影术后胰腺炎关系的研究进展

内镜逆行胰胆管造影术(enoscopiC retrograde cholangiopancreatography,ERCP)是当前诊治肝、胆、胰疾病的重要手段之一.急性胰腺炎是ERCP术后最常见、最严重的并发症,目前其发病机制仍未完全阐明.近年来研究的普遍共识是炎性细胞因子在轻症胰腺炎向重症胰腺炎演进过程中发挥了重要作...     

内镜逆行胰胆管造影术后胰腺炎的发病机制及药物预防研究

内镜逆行胰胆管造影术（ERCP）是广泛用于肝、胆、胰疾病的诊治手段。ERCP后胰腺炎（PEP）是ERCP后最常见的并发症,文献报道发生率为1％～40％,在多数前瞻性随机研究中其发生率在4％～8％不等。有少数PEP患者可发展为重症急性胰腺炎（SAP）,甚至可危及生命。近年来,许多学者致力于ERCP后胰腺炎的发病机制和药物预防研究,本文对这方面的进展作一综述。     

Factors and outcomes associated with pancreatic duct disruption in patients with acute necrotizing pancreatitis

Background and aimsAcute necrotizing pancreatitis (ANP) can affect main pancreatic duct (MPD) as well as parenchyma. However, the incidence and outcomes of MPD disruption has not been well studied in the setting of ANP.MethodsThis retrospective study investigated 84 of 465 patients with ANP who underwent magnetic resonance cholangiopancreatography and/or endoscopic retrograde cholangiopancreatography. The MPD disruption group was subclassified into complete and partial disruption.ResultsMPD disruption was documented in 38% (32/84) of the ANP patients. Extensive necrosis, enlarging/refractory pancreatic fluid collections (PFCs), persistence of amylase-rich output from percutaneous drainage, and amylase-rich ascites/pleural effusion were more frequently associated with MPD disruption. Hospital stay was prolonged (mean 55 vs. 29 days) and recurrence of PFCs (41% vs. 14%) was more frequent in the MPD disruption group, although mortality did not differ between ANP patients with and without MPD disruption. Subgroup analysis between complete disruption (n = 14) and partial disruption (n = 18) revealed a more frequent association of extensive necrosis and full-thickness glandular necrosis with complete disruption. The success rate of endoscopic transpapillary pancreatic stenting across the stricture site was lower in complete disruption (20% vs. 92%). Patients with complete MPD disruption also showed a high rate of PFC recurrence (71% vs. 17%) and required surgery more often (43% vs. 6%).ConclusionsMPD disruption is not uncommon in patients with ANP with clinical suspicion on ductal disruption. Associated MPD disruption may influence morbidity, but not mortality of patients with ANP. Complete MPD disruption is often treated by surgery, whereas partial MPD disruption can be managed successfully with endoscopic transpapillary stenting and/or transmural drainage. Further prospective studies are needed to study these items.     

ERCP联合胆道微结石检测对明确特发性急性胰腺炎病因的价值

目的:探讨内镜逆行胰胆管造影(endoscopic retrograde cholangiopancreatography,ERCP)联合胆道微结石检测对特发性急性胰腺炎(idiopathic pancreatitis,IAP)病因的诊断价值.方法:以2008-01/2011-01急性胰腺炎(acute pancreatitis,AP)患者105例为研究对象,选择影像学(CT、B超、MRCP)检查后不能明确病因的特发性急性胰腺炎患者42例进行诊断性ERCP检查,同时收集胆汁5mL行胆道微结石监测.以2005-01/2008-01AP患者90例为对照组,应用SPSS13.0统计软件统计,取P<0.05差异有统计学意义.结果:对照组对AP病因确诊率为55.5%(50/90),联合检查组对AP的病因确诊率为87.5%(93/105),差异有统计学意义(P<0.05),ERCP联合胆道微结石检测对IAP病因有较高的确诊率.结论:ERCP联合胆道微结石检测对明确IAP病因有重要价值.     

Strategy to differentiate autoimmune pancreatitis from pancreas cancer

Autoimmune pancreatitis (AIP) is a newly described entity of pancreatitis in which the pathogenesis appears to involve autoimmune mechanisms. Based on histological and immunohistochemical examinations of various organs of AIP patients, AIP appears to be a pancreatic lesion reflecting a systemic "IgG4-related sclerosing disease". Clinically, AIP patients and patients with pancreatic cancer share many features, such as preponderance of elderly males, frequent initial symptom of painless jaundice, development of new-onset diabetes mellitus, and elevated levels of serum tumor markers. It is of uppermost importance not to misdiagnose AIP as pancreatic cancer. Since there is currently no diagnostic serological marker for AIP, and approach to the pancreas for histological examination is generally difficult, AIP is diagnosed using a combination of clinical, serological, morphological, and histopathological features. Findings suggesting AIP rather than pancreatic cancer include: fluctuating obstructive jaundice; elevated serum IgG4 levels; diffuse enlargement of the pancreas; delayed enhancement of the enlarged pancreas and presence of a capsule-like rim on dynamic computed tomography; low apparent diffusion coefficient values on diffusion-weighted magnetic resonance image; irregular narrowing of the main pancreatic duct on endoscopic retrograde cholangiopancreatography; less upstream dilatation of the main pancreatic duct on magnetic resonance cholangiopancreatography, presence of other organ involvement such as bilateral salivary gland swelling, retroperitoneal fibrosis and hilar or intrahepatic sclerosing cholangitis; negative work-up for malignancy including endoscopic ultrasound-guided fine needle aspiration; and steroid responsiveness. Since AIP responds dramatically to steroid therapy, accurate diagnosis of AIP can avoid unnecessary laparotomy or pancreatic resection.     

Utility of pancreatography for diagnosing autoimmune pancreatitis

AIM: To identify pancreatographic findings that facilitate differentiating between autoimmune pancreatitis (AIP) and pancreatic cancer (PC) on endoscopic retrograde cholangiopancreatography (ERCP) and magnetic resonance cholangiopancreatography (MRCP). METHODS: ERCP findings of 48 AIP and 143 PC patients were compared. Diagnostic accuracies for AIP by ERCP and MRCP were compared in 30 AIP patients. RESULTS: The following ERCP findings suggested a diagnosis of AIP rather than PC. Obstruction of the main panc...