Fine-needle aspiration of pancreatic cystic lesions: a randomized study with long-term follow-up comparing standard and flexible needles.

BACKGROUND: Pancreatic cystic lesions (PCLs) are increasingly found on cross-sectional imaging, with the majority having a low risk for malignancy. The added value of fine-needle aspiration (FNA) in risk stratification remains unclear. We evaluated the impact of three FNA needles on diagnostic accuracy, clinical management, and the ability to accrue fluid for tumor markers. METHODS: A multicenter prospective trial randomized 250 patients with PCLs ≥ 13 mm 2:1:1 to 19G Flex, 19G, and 22G needles with crossover for repeated FNA procedures. Diagnostic accuracy was established at 2-year follow-up, with the final diagnosis from surgical histopathology or consensus diagnosis by experts based sequentially on clinical presentation, imaging, and aspirate analysis in blinded review. RESULTS: Enrolled patients (36 % symptomatic) had PCLs in the head (44 %), body (28 %), and tail (26 %). Percentage of cyst volume aspirated was 78 % (72 % - 84 %) for 19G Flex, 74 % (64 % - 84 %) for 22G, and 73 % (63 % - 83 %) for 19G (P = 0.84). Successful FNA was significantly higher for 19G Flex (89 % [82 % - 94 %]) and 22G (82 % [70 % - 90 %]) compared with 19G (75 % [63 % - 85 %]) (P = 0.02). Repeated FNA was required more frequently in head/uncinate lesions than in body and tail (P < 0.01). Diagnostic accuracy of the cyst aspirate was 84 % (73 % - 91 %) against histopathology at 2-year follow-up (n = 79), and 77 % (70 % - 83 %) against consensus diagnosis among nonsurgical cases (n = 171). Related serious adverse events occurred in 1.2 % (0.2 % - 3.5 %) of patients. CONCLUSIONS: Our study results demonstrate a statistically significant difference among the three needles in the overall success rate for aspiration, but not in the percentage of cyst volume aspirated. Flexible needles may be particularly valuable in sampling cystic PCLs in the pancreatic head/uncinate process.

Interobserver Agreement for Classifying Post-liver Transplant Biliary Strictures in Donation After Circulatory Death Donors.

INTRODUCTION: Biliary strictures are a common complication of donation after circulatory death (DCD) liver transplantation (LT) and require multiple endoscopic retrograde cholangiopancreatography (ERCP) procedures. Three classification systems, based on cholangiograms, have been proposed for categorizing post-LT biliary strictures. We examined the interobserver agreement for each of the three classifications. METHODS: DCD LT recipients from 2012 through March 2017 undergoing ERCP for biliary strictures were included in the study. Initial cholangiograms delineating the entire biliary tree prior to endoscopic intervention were selected. One representative cholangiogram was selected from each ERCP. Five interventional endoscopists independently viewed each anonymized cholangiogram and classified the post-LT stricture according to each of the three classification systems. The Ling classification proposes four types of post-LT strictures based on their location. The Lee classification proposes four classes based on location and number of intrahepatic strictures. The binary system classifies strictures into anastomotic or non-anastomotic types. The Krippendorff's alpha reliability estimate was used to grade the strength of agreement as "poor," "fair," "moderate," "good," or "excellent" for values between 0-0.20, 0.21-0.4, 0.41-0.6, 0.61-0.08, and 0.81-1, respectively. RESULTS: One hundred DCD LT recipients (age 57.07 ± 8.8 years; 71 males) were initially evaluated. Of these, 49 patients who underwent 206 ERCP procedures for biliary strictures were included in the analysis. One hundred thirty-nine cholangiograms were selected and subsequently classified by five endoscopists. Interobserver agreement for post-LT biliary strictures was 0.354 for Ling classification (fair agreement), 0.405 for Lee classification (fair agreement), and 0.421 for the binary classification (moderate agreement). The binary classification provided the least amount of detail regarding the location and number of biliary strictures. DISCUSSION: The currently available classification systems for assessing post-LT biliary strictures have sub-optimal interobserver agreement. A better-designed classification system is needed for categorizing post-LT biliary strictures.

Methylated DNA in Pancreatic Juice Distinguishes Patients With Pancreatic Cancer From Controls.

BACKGROUND & AIMS: Precursors of pancreatic cancer arise in the ductal epithelium; markers exfoliated into pancreatic juice might be used to detect high-grade dysplasia (HGD) and cancer. Specific methylated DNA sequences in pancreatic tissue have been associated with adenocarcinoma. We analyzed these methylated DNA markers (MDMs) in pancreatic juice samples from patients with pancreatic ductal adenocarcinomas (PDACs) or intraductal papillary mucinous neoplasms (IPMNs) with HGD (cases), and assessed their ability to discriminate these patients from individuals without dysplasia or with IPMNs with low-grade dysplasia (controls). METHODS: We obtained pancreatic juice samples from 38 patients (35 with biopsy-proven PDAC or pancreatic cystic lesions with invasive cancer and 3 with HGD) and 73 controls (32 with normal pancreas and 41 with benign disease), collected endoscopically from the duodenum after secretin administration from February 2015 through November 2016 at 3 medical centers. Samples were analyzed for the presence of 14 MDMs (in the genes NDRG4, BMP3, TBX15, C13orf18, PRKCB, CLEC11A, CD1D, ELMO1, IGF2BP1, RYR2, ADCY1, FER1L4, EMX1, and LRRC4), by quantitative allele-specific real-time target and signal amplification. We performed area under the receiver operating characteristic curve analyses to determine the ability of each marker, and panels of markers, to distinguish patients with HGD and cancer from controls. MDMs were combined to form a panel for detection using recursive partition trees. RESULTS: We identified a group of 3 MDMs (at C13orf18, FER1L4, and BMP3) in pancreatic juice that distinguished cases from controls with an area under the receiver operating characteristic value of 0.90 (95% CI, 0.83-0.97). Using a specificity cut-off value of 86%, this group of MDMs distinguished patients with any stage of pancreatic cancer from controls with 83% sensitivity (95% CI, 66%-93%) and identified patients with stage I or II PDAC or IPMN with HGD with 80% sensitivity (95% CI, 56%-95%). CONCLUSIONS: We identified a group of 3 MDMs in pancreatic juice that identify patients with pancreatic cancer with an area under the receiver operating characteristic value of 0.90, including patients with early stage disease or advanced precancer. These DNA methylation patterns might be included in algorithms for early detection of pancreatic cancer, especially in high-risk cohorts. Further optimization and clinical studies are needed.

Recommendations for the Operation of Endoscopy Centers in the setting of the COVID-19 pandemic - World Endoscopy Organization guidance document.

Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) is the etiologic agent causing the disease Corona Virus Disease 19 (COVID-19), resulting in a worldwide pandemic. Non-emergent endoscopy services have been disrupted as incidence and hospitalizations were rising. It is anticipated that the peak incidence may be leveling off in many parts of the world, but there is a concern for resurgence of the virus activity. Thus, it is important for endoscopy units to have plans in place during peak times of the epidemic and when resuming endoscopic services as the pandemic wanes. The global endoscopy community is faced with the challenge of providing care during this time. The WEO-COVID guidance task force has provided this resource document based on the current evidence and consensus opinion. These World Endoscopy Organization (WEO) recommendations are meant to guide endoscopists worldwide, should be interpreted in light of specific clinical conditions and resource availability and may not apply in all situations. This guidance document does not supersede the need to check for all local regulations and legislations.

Outcomes of endoscopic therapy in donation after cardiac death liver transplant biliary strictures.

BACKGROUND: Biliary strictures after donation-after-cardiac-death (DCD) liver transplantation (LT) require multiple endoscopic retrograde cholangiopancreatographies (ERCP). The outcomes of endoscopic dilation and maximal stenting are not well-characterized in this high-risk population. METHODS: DCD LT recipients who underwent LT and ERCP from 2012-2018 were selected. Anastomotic and non-anastomotic strictures were treated with balloon dilation and maximal stenting. A successful stent-free trial was defined as absence of biochemical, clinical or imaging evidence of strictures on follow-up exceeding 6 months. Adverse events were defined as unplanned admission or inpatient evaluation within 7 days of ERCP. RESULTS: Forty-nine DCD LT recipients underwent ERCP and 34 patients were diagnosed with strictures (20 anastomotic). Stent-free trial was successful in 27 patients. Adverse events occurred after 20 ERCPs. Patients with anastomotic strictures required fewer stents (1.43 ± 1.37 vs 2.63 ± 1.66; P < 0.001), shorter procedure and fluoroscopy times (34.15 ± 20.9 vs 59.6 ± 30.7 minutes, P < 0.001; 5.99 ± 7.4 vs 14.73 ± 10.74 minutes, P < 0.001), fewer relapses (10% vs 57%, P = 0.003), shorter intervals between initial ERCP and stent-free success (136.9 ± 118.3 vs 399.56 ± 234.7; P = 0.003), and between LT and stent-free success (227.8 ± 171.9 vs 464.1 ± 224.6 days; P = 0.005) compared to non-anastomotic strictures. CONCLUSION: Endoscopic dilation and maximal stenting resolves biliary strictures in DCD LT recipients with sustained success and relatively few adverse events.

ASGE principles of endoscopic training.

This White Paper shares guidance on the important principles of training endoscopy teachers, the focus of an American Society for Gastrointestinal Endoscopy (ASGE)/World Endoscopy Organization Program for Endoscopic Teachers and Leaders of Endoscopic Training held at the ASGE Institute for Training and Technology. Key topics included the need for institutional support and continuous skills development, the importance of consensus and consistency in content and approach to teaching, the role of conscious competence and content breakdown into discreet steps in effective teaching, defining roles of supervisors versus instructors to ensure teaching consistency across instructors, identification of learning environment factors and barriers impacting effective teaching, and individualized training that incorporates effective feedback and adapts with learner proficiency. Incorporating simulators into endoscopy teaching, applying good endoscopy teaching principles outside the endoscopy room, key principles of hands-on training, and effective use of simulators and models in achieving specific learning objectives were demonstrated with rotations through hands-on simulator stations as part of the program. A discussion of competency-based assessment was followed by live sessions in which attendees applied endoscopy teaching principles covered in the program. Conclusions highlighted the need for the following: formal training of endoscopy teachers to a level of conscious competence, incorporation of formal training structures into existing training curricula, intentional teaching preparation, feedback to trainees and instructors alike aimed at improving performance, and competency-based trainee assessment. The article is intended to help motivate individuals who play a role in training other endoscopists to develop their teaching abilities, promote discussions about endoscopy training, and engage both endoscopy trainers and trainees in a highly rewarding learning process that is in the best interest of patients.

ASGE EndoVators Summit: simulators and the future of endoscopic training.

Interest in the use of simulation for acquiring, maintaining, and assessing skills in GI endoscopy has grown over the past decade, as evidenced by recent American Society for Gastrointestinal Endoscopy (ASGE) guidelines encouraging the use of endoscopy simulation training and its incorporation into training standards by a key accreditation organization. An EndoVators Summit, partially supported by a grant from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) of the National Institutes of Health, (NIH) was held at the ASGE Institute for Training and Technology from November 19 to 20, 2017. The summit brought together over 70 thought leaders in simulation research and simulator development and key decision makers from industry. Proceedings opened with a historical review of the role of simulation in medicine and an outline of priority areas related to the emerging role of simulation training within medicine broadly. Subsequent sessions addressed the summit's purposes: to review the current state of endoscopy simulation and the role it could play in endoscopic training, to define the role and value of simulators in the future of endoscopic training and to reach consensus regarding priority areas for simulation-related education and research and simulator development. This white paper provides an overview of the central points raised by presenters, synthesizes the discussions on the key issues under consideration, and outlines actionable items and/or areas of consensus reached by summit participants and society leadership pertinent to each session. The goal was to provide a working roadmap for the developers of simulators, the investigators who strive to define the optimal use of endoscopy-related simulation and assess its impact on educational outcomes and health care quality, and the educators who seek to enhance integration of simulation into training and practice.

Predictors of Biliary Strictures After Liver Transplantation Among Recipients of DCD (Donation After Cardiac Death) Grafts.

INTRODUCTION: Biliary strictures are a common complication among donation after cardiac death (DCD) liver transplantation (LT) recipients and may require multiple endoscopic retrograde cholangiopancreatography (ERCP) procedures. We evaluated the risk factors associated with development of biliary strictures in DCD LT recipients. METHODS: DCD LT recipients who underwent transplantation from 2012 to 2017 were divided into 2 groups: (a) those with anastomotic or non-anastomotic biliary strictures who required ERCP ("stricture group") and (b) those who did not require ERCP or had cholangiograms without evidence of biliary strictures ("non-stricture group"). Clinical data, cholangiograms and laboratory values at day 0 and day 7 after LT were compared between the two groups. RESULTS: Forty-nine of the 100 DCD LT recipients underwent ERCP. Thirty-four of these 49 LT recipients had evidence of anastomotic or non-anastomotic biliary strictures (stricture group), while the remaining 66 LT recipients comprised the non-stricture group. Donor age was significantly higher in stricture group compared to non-stricture group (49.2 ± 1.8 vs 42.8 ± 1.57 years, respectively; p = 0.01). The stricture group had a significantly higher total bilirubin at day 0 (3.5 ± 0.37 vs 2.6 ± 0.21 mg/dL; p = 0.02) and INR at day 7 (1.24 ± 0.06 vs 1.13 ± 0.01; p = 0.048) compared to the non-stricture group. Multi-variate analysis demonstrated significant association between biliary strictures and total bilirubin at day 0 of LT and age of donor. CONCLUSION: Biliary strictures occur frequently in DCD LT recipients and may be associated with older age of donor. Hyperbilirubinemia immediately after transplant and higher INR in the first 7 days after transplant may predict subsequent development of biliary strictures.

Impact of feedback on adenoma detection rates: Outcomes of quality improvement program.

BACKGROUND AND AIM: Feedback has been shown to improve performance in colonoscopy including adenoma detection rate (ADR). The frequency at which feedback should be given is unknown. As part of a quality improvement program, we sought to measure the outcome of providing quarterly and monthly feedback on colonoscopy quality measures. METHODS: All screening colonoscopies performed at endoscopy unit at Mayo Clinic Arizona by gastroenterologists between October 2010 and December 2012 were reviewed. Quality indicators, including ADR, were extracted for each individual endoscopist, and feedback was provided. The study period was divided into four distinct groups: pre-intervention that served as baseline, quarterly feedback, monthly feedback, and post-intervention. Based on ADR, endoscopists were grouped into "low detectors" (≤ 25%), "average detectors" (26-35%), and "high detectors" (> 35%). RESULTS: A total of 3420 screening colonoscopies were performed during the study period (555 patients during pre-intervention, 1209 patients during quarterly feedback, 599 during monthly feedback, and 1057 during the post-intervention period) by 16 gastroenterologists. The overall ADR for the group improved from 30.5% to 37.7% (P = 0.003). Compared with the pre-interventional period, all quality indicators measured significantly improved during the monthly feedback and post-intervention periods but not in the quarterly feedback period. CONCLUSIONS: In our quality improvement program, monthly feedback significantly improved colonoscopy quality measures, including ADR, while quarterly feedback did not. The impact of the intervention was most prominent in the "low detectors" group. Results were durable up to 6 months following the intervention.

Comparison of Small Versus Large Volume Split Dose Preparation for Colonoscopy: A Study of Colonoscopy Outcomes.

BACKGROUND: Split dose bowel preparations (SDP) have superior outcomes for colonoscopy as compared to evening before regimens. However, the association of the actual volume of the SDP to colonoscopy outcome measures has not been well studied. AIMS: Compare adenoma detection rate (ADR), sessile serrated polyp detection rate (SDR), mean bowel cleanse score, and predictors of inadequate exams between small volume SDP and large volume SDP. METHODS: We have conducted a retrospective study in patients undergoing colonoscopy with small volume SDP versus large volume SDP between July 2014 and December 2014. Basic demographics (age, gender and BMI) along with clinical co-morbidities were recorded. Quality of the bowel preparation, ADR and SDR was compared between these groups. Univariate and multivariable logistic regressions were used to assess the determinants of inadequate exams in each group. RESULTS: 1573 patients with split dose preparation were included in this retrospective study. 58.4% (920/1573) patients took small volume SDP. There was no difference in ADR (37.9 vs. 38.8%, p = 0.2); however, SDR was higher for small volume SDP compared to large volume SDP (11.9 vs. 7.9% p = 0.005). There was no difference in the rate of inadequate exams between the two groups (p = 0.7). A history of diabetes and constipation was associated with inadequate exams only in the small volume SDP. CONCLUSIONS: SDR was higher in small volume SDP. There was no difference in rate of inadequate exams between the two groups. A history of diabetes and constipation was associated with inadequate exams only in patients with the small volume SDP.

Patient safety during sedation by anesthesia professionals during routine upper endoscopy and colonoscopy: an analysis of 1.38 million procedures.

BACKGROUND AND AIMS: Sedation for GI endoscopy directed by anesthesia professionals (ADS) is used with the intention of improving throughput and patient satisfaction. However, data on its safety are sparse because of the lack of adequately powered, randomized controlled trials comparing it with endoscopist-directed sedation (EDS). This study was intended to determine whether ADS provides a safety advantage when compared with EDS for EGD and colonoscopy. METHODS: This retrospective, nonrandomized, observational cohort study used the Clinical Outcomes Research Initiative National Endoscopic Database, a network of 84 sites in the United States composed of academic, community, health maintenance organization, military, and Veterans Affairs practices. Serious adverse events (SAEs) were defined as any event requiring administration of cardiopulmonary resuscitation, hospital or emergency department admission, administration of rescue/reversal medication, emergency surgery, procedure termination because of an adverse event, intraprocedural adverse events requiring intervention, or blood transfusion. RESULTS: There were 1,388,235 patients in this study that included 880,182 colonoscopy procedures (21% ADS) and 508,053 EGD procedures (23% ADS) between 2002 and 2013. When compared with EDS, the propensity-adjusted SAE risk for patients receiving ADS was similar for colonoscopy (OR, .93; 95% CI, .82-1.06) but higher for EGD (OR, 1.33; 95% CI, 1.18-1.50). Additionally, with further stratification by American Society of Anesthesiologists (ASA) class, the use of ADS was associated with a higher SAE risk for ASA I/II and ASA III subjects undergoing EGD and showed no difference for either group undergoing colonoscopy. The sample size was not sufficient to make a conclusion regarding ASA IV/V patients. CONCLUSIONS: Within the confines of the SAE definitions used, use of anesthesia professionals does not appear to bring a safety benefit to patients receiving colonoscopy and is associated with an increased SAE risk for ASA I, II, and III patients undergoing EGD.

EUS-guided portal injection chemotherapy for treatment of hepatic metastases: feasibility in the acute porcine model.

BACKGROUND AND AIMS: Direct injection of chemotherapy into the portal vein for treatment of liver metastases may increase hepatic tissue levels while decreasing systemic levels and toxicities. We aimed to evaluate EUS-guided portal injection chemotherapy (EPIC) by using drug-eluting microbeads or nanoparticles and compare it with systemic injection. METHODS: We conducted a comparative feasibility trial in the acute porcine model (24 anesthetized pigs). Pigs were treated with irinotecan, doxorubicin, or albumin-bound paclitaxel nanoparticles (n = 8/group). Within each group, pigs were treated with EPIC or a systemic intravenous injection of drug and saline solution into the portal vein (n = 4/treatment). Irinotecan or doxorubicin were loaded onto microbeads for EPIC treatment only. We examined drug levels in tissue (1 hour) and plasma (15 minutes). RESULTS: EUS-guided access and injection was successful in all animals. EPIC with irinotecan-loaded microbeads showed nearly double the hepatic concentration compared with systemic injection (6242 vs 3692 ng/g) and almost half the systemic levels. EPIC with doxorubicin-loaded microbeads showed a 5-fold increase in hepatic levels (35,450 vs 6930 ng/g) and a 30-fold decrease in cardiac levels (153 vs 4805 ng/g) compared with systemic administration (P < .05 for both). EPIC with albumin-bound paclitaxel nanoparticles increased hepatic concentrations by 60% and decreased systemic levels by 24% to 32%. CONCLUSIONS: EPIC holds promise as a new treatment for hepatic metastases.

Nonneoplastic polypectomy during screening colonoscopy: the impact on polyp detection rate, adenoma detection rate, and overall cost.

BACKGROUND: The frequency of nonneoplastic polypectomy (NNP) and its impact on the polyp detection rate (PDR) is unknown. The correlation between NNP and adenoma detection rate (ADR) and its impact on the cost of colonoscopy has not been investigated. OBJECTIVE: To determine the rate of NNP in screening colonoscopy, the impact of NNP on the PDR, and the correlation of NNP with ADR. The increased cost of NNP during screening colonoscopy also was calculated. DESIGN: We reviewed all screening colonoscopies. PDR and ADR were calculated. We then calculated a nonneoplastic polyp detection rate (patients with ≥1 nonneoplastic polyp). SETTING: Tertiary-care referral center. PATIENTS: Patients who underwent screening colonoscopies from 2010 to 2011. INTERVENTIONS: Colonoscopy. MAIN OUTCOME MEASUREMENTS: ADR, PDR, NNP rate. RESULTS: A total of 1797 colonoscopies were reviewed. Mean (±standard deviation) PDR was 47.7%±12.0%, and mean ADR was 27.3%±6.9%. The overall NNP rate was 10.4%±7.1%, with a range of 2.4% to 28.4%. Among all polypectomies (n=2061), 276 were for nonneoplastic polyps (13.4%). Endoscopists with a higher rate of nonneoplastic polyp detection were more likely to detect an adenoma (odds ratio 1.58; 95% confidence interval, 1.1-1.2). With one outlier excluded, there was a strong correlation between ADR and NNP (r=0.825; P<.001). The increased cost of removal of nonneoplastic polyps was $32,963. LIMITATIONS: Retrospective study. CONCLUSION: There is a strong correlation between adenoma detection and nonneoplastic polyp detection. The etiology is unclear, but nonneoplastic polyp detection rate may inflate the PDR for some endoscopists. NNP also adds an increased cost. Increasing the awareness of endoscopic appearances through advanced imaging techniques of normal versus neoplastic tissue may be an area to improve cost containment in screening colonoscopy.

EUS-derived criteria for distinguishing benign from malignant metastatic solid hepatic masses.

BACKGROUND: Detection of hepatic metastases during EUS is an important component of tumor staging. OBJECTIVE: To describe our experience with EUS-guided FNA (EUS-FNA) of solid hepatic masses and derive and validate criteria to help distinguish between benign and malignant hepatic masses. DESIGN: Retrospective study, survey. SETTING: Single, tertiary-care referral center. PATIENTS: Medical records were reviewed for all patients undergoing EUS-FNA of solid hepatic masses over a 12-year period. INTERVENTIONS: EUS-FNA of solid hepatic masses. MAIN OUTCOME MEASUREMENTS: Masses were deemed benign or malignant according to predetermined criteria. EUS images from 200 patients were used to create derivation and validation cohorts of 100 cases each, matched by cytopathologic diagnosis. Ten expert endosonographers blindly rated 15 initial endosonographic features of each of the 100 images in the derivation cohort. These data were used to derive an EUS scoring system that was then validated by using the validation cohort by the expert endosonographer with the highest diagnostic accuracy. RESULTS: A total of 332 patients underwent EUS-FNA of a hepatic mass. Interobserver agreement regarding the initial endosonographic features among the expert endosonographers was fair to moderate, with a mean diagnostic accuracy of 73% (standard deviation 5.6). A scoring system incorporating 7 EUS features was developed to distinguish benign from malignant hepatic masses by using the derivation cohort with an area under the receiver operating curve (AUC) of 0.92; when applied to the validation cohort, performance was similar (AUC 0.86). The combined positive predictive value of both cohorts was 88%. LIMITATIONS: Single center, retrospective, only one expert endosonographer deriving and validating the EUS criteria. CONCLUSION: An EUS scoring system was developed that helps distinguish benign from malignant hepatic masses. Further study is required to determine the impact of these EUS criteria among endosonographers of all experience.

Anatomical Location of Pathology Is Predictive of Prolonged Fluoroscopy Time During ERCP: A Multicenter American Study.

BACKGROUND: Different factors have been associated with prolonged fluoroscopy time (FT) during endoscopic retrograde cholangiopancreatography (ERCP). AIM: We hypothesize that FT depends on both the anatomical location of the pathology managed during ERCP and the complexity of the ERCP. METHODS: Three centers participated in a retrospective multi-center cohort study. Data on patient demographics, ERCP complexity, and the location of pathology were collected. The relationships between FT and the location of pathology, ERCP complexity, patient demographics, and ERCP maneuvers, respectively, were analyzed. Prolonged FT was defined as a FT > 10 min. RESULTS: A total of 442 cases underwent ERCP in three different centers (301 cases, 76 cases, and 65 cases in centers A, B, and C, respectively) by six endoscopists. The median FT for all cases was 282 (range 8-3,516) s. Mean FT increased progressively according to anatomical location in the order extrahepatic cases {n = 298; mean FT 292 [95 % confidence interval (CI) 263-322] s}, pancreatic cases [n = 27; mean FT 359 (95 % CI 200-517) s], and intrahepatic cases [n = 117; mean FT 736 s (95 % CI 635-836) s]. Mean FT increased progressively with the complexity scale, with mean FT for Grade I, 218 (95 % CI 138-299) s; Grade II, 295 (95 % 261-329) s; Grade III, 586 (95 % CI 508-663) s; Grade IV, 636 (95 % CI 437-834) s. Multivariable analysis confirmed that prolonged FT was independently associated with anatomical location of the targeted pathology during ERCP-but not with ERCP complexity and endoscopy center. CONCLUSION: Prolonged FT during ERCP is associated most strongly with intrahepatic cases. FT can be used most effectively as a quality measure if it is stratified according to presence or absence of intrahepatic cases.

Pancreatitis before pancreatic cancer: clinical features and influence on outcome.

OBJECTIVES: Pancreatitis is considered a possible risk factor for and a presentation of pancreatic adenocarcinoma (PA). We aimed to evaluate a large PA patient registry to determine whether prior history of pancreatitis influenced survival. METHODS: We retrospectively analyzed the Mayo Clinic Biospecimen Resource for Pancreas Research database from January 1992 to September 2011. Data collected included demographic characteristics, history of tobacco or alcohol use, diabetes mellitus (DM), cholelithiasis, pseudocyst, and details regarding PA. Clinical characteristics and outcomes of PA patients with pancreatitis were compared with PA patients without pancreatitis history. RESULTS: We analyzed 2573 patients with PA diagnosis. Among these patients, 195 (8%) were identified who had pancreatitis diagnosis ≥ 10 days before PA diagnosis. The cohort with pancreatitis history included more patients with DM (30% vs. 18%; P<0.001) and more smokers (68% vs. 58%; P=0.02). Compared with patients without pancreatitis history, these patients received diagnoses of PA at a younger age (63 vs. 65 y; P=0.005) and earlier stage (stages I and II; 52% vs. 37%; P<0.001). A greater percentage had history of surgery with curative intent (50% vs. 43%; P=0.001) and significantly better survival [median (range), 387 d (314 to 460 d) vs. 325 d (306 to 344 d); P=0.003]. CONCLUSIONS: Patients with PA and pancreatitis had more weight loss and DM, but had PA diagnosis at an earlier stage, were more likely to have pancreatic surgery, and therefore better survival than PA patients without pancreatitis, likely due to the earlier diagnosis. Further studies are needed to evaluate whether screening for PA in patients with pancreatitis history would provide survival benefit.

Non-radiation endoscopic retrograde cholangiopancreatography in the management of choledocholithiasis during pregnancy.

Gallstone diseases are common during pregnancy. In most cases, patients are asymptomatic and do not require any treatment. However, choledocholithiasis, cholangitis, and gallstone pancreatitis may potentially become life-threatening for both mother and fetus and often require urgent intervention. Although endoscopic retrograde cholangiopancreatography (ERCP) has become the standard technique for removing common bile duct stones, it is associated with ionizing radiation that could carry teratogenic risk. Non-radiation ERCP (NR-ERCP) is reported to be effective without incurring this risk. Two techniques have been described to confirm bile duct cannulation: bile aspiration and image guidance. With bile aspiration, biliary cannulation is confirmed by applying suction to the cannula to yield bile, thus confirming an intrabiliary position. Image guidance involves using ultrasound or direct visualization (choledochoscopy) to confirm selective biliary cannulation or duct clearance. Once cannulation is achieved, the stones are removed using standard ERCP techniques and tools. Case series and retrospective studies have reported success rates of up to 90% for NR-ERCP with complication rates similar to standard ERCP. Pregnancy outcomes are not adversely affected by NR-ERCP, but whether the avoidance of radiation carries benefit for the baby is unknown. Prospective comparative trials are lacking. NR-ERCP is technically demanding and should be attempted only by skilled biliary endoscopists in properly equipped and staffed health-care institutions, in a multidisciplinary setting.