GRUPUGE Perspective: Endoscopic Ultrasound-Guided Drainage of Peripancreatic Collections

Pancreatic and peripancreatic collections (PPC) are a known complication of acute pancreatitis. They are categorized into four types of collection: (1) acute peripancreatic fluid collection, (2) pseudocyst, (3) acute necrotic collection and (4) walled-off necrosis. Most PPC resolve spontaneously or are persistent but asymptomatic. Intervention is needed in a minority of patients with infected or symptomatic collection. Endoscopic ultrasound-guided transmural drainage is currently the first-line treatment option for PPC management. It has shown great technical and clinical success, similar to percutaneous or surgical approaches, but with lower morbidity and costs and better quality of life. In this review article, the GRUPUGE presents an updated perspective on the potential role of endoscopic ultrasound-guided drainage of peripancreatic collections, addressing the selection criteria and the technical issues of different techniques and analysing emerging data on their efficacy and safety.

Outcome of gastric antral vascular ectasia and related anemia after orthotopic liver transplantation

BACKGROUND

Gastric antral vascular ectasia (GAVE) is a significant complication of cirrhosis. Numerous medical, surgical, and endoscopic treatment modalities have been proposed with varied satisfactory results. In a few small studies, GAVE and associated anemia have resolved after orthotopic liver transplantation (OLT). 

AIM

To assess the impact of OLT on the resolution of GAVE and related anemia.

METHODS

We retrospectively reviewed clinical records of adult patients with GAVE who underwent OLT between September 2012 and September 2019. Demographics and other relevant clinical findings were collected, including hemoglobin levels and upper endoscopy findings before and after OLT. The primary outcome was the resolution of GAVE and its related anemia after OLT.

RESULTS

Sixteen patients were identified. Mean pre-OLT Hgb was 7.7 g/dL and mean 12 mo post-OLT Hgb was 11.9 g/dL, (P = 0.001). Anemia improved (defined as Hgb increased by 2g) in 87.5% of patients within 6 to 12 mo after OLT and resolved completely in half of the patients. Post-OLT esophagogastroduodenoscopy was performed in 10 patients, and GAVE was found to have resolved entirely in 6 of those patients (60%). 

CONCLUSION

Although GAVE and associated anemia completely resolved in the majority of our patients after OLT, GAVE persisted in a few patients after transplant. Further studies in a large group of patients are necessary to understand the causality of disease and to better understand the factors associated with the persistence of GAVE post-transplant.

MR Imaging of the Perihepatic Space

The perihepatic space is frequently involved in a spectrum of diseases, including intrahepatic lesions extending to the liver capsule and disease conditions involving adjacent organs extending to the perihepatic space or spreading thanks to the communication from intraperitoneal or extraperitoneal sites through the hepatic ligaments. Lesions resulting from the dissemination of peritoneal processes may also affect the perihepatic space. Here we discuss how to assess the perihepatic origin of a lesion and describe the magnetic resonance imaging (MRI) features of normal structures and fluids that may be abnormally located in the perihepatic space. We then review and illustrate the MRI findings present in cases of perihepatic infectious, tumor-related, and miscellaneous conditions. Finally, we highlight the value of MRI over computed tomography.

Pancreatitis in a Patient with Severe Coronavirus Disease Pneumonia Treated with Veno-venous Extracorporeal Membrane Oxygenation

Severe coronavirus disease (COVID-19) can induce serious complications, including acute respiratory distress syndrome, septic shock, and acute kidney injury. However, few reports have associated COVID-19 with pancreatitis. We herein report the case of a 55-year-old patient who developed acute pancreatitis associated with severe COVID-19 pneumonia and was successfully treated with veno-venous extracorporeal membrane oxygenation (ECMO). Elevated pancreatic enzymes levels and computed tomography findings led to the diagnosis of acute pancreatitis due to COVID-19. Although we found that severe COVID-19 pneumonia can lead to pancreatitis, the underlying pathophysiology remains unknown.

Effects of Fluid Resuscitation on the Occurrence of Organ Failure and Mortality in Patients With Acute Pancreatitis

OBJECTIVES

Acute pancreatitis (AP) is a serious gastroenterological condition requiring urgent fluid resuscitation and emergent intensive care. However, the benefit of fluid resuscitation is inconsistent. Therefore, this study aimed to examine the effects of fluid resuscitation on the occurrence of organ failure and mortality in patients with AP.

METHODS

The data were retrospectively extracted from the Medical Information Mart for Intensive Care III 2002-2012 database. The fluid resuscitation and fluid balance were calculated at 12, 24, 36, and 48 hours after intensive care unit admission. Multivariate analysis models were used.

RESULTS

A total of 317 patients with AP were included. Odds of organ failure increased significantly with increased fluid input at 0 to 12 hours [adjusted odds ratio (aOR), 1.124; 95% confidence interval (CI), 1.015-1.244] and with increased fluid balance at 36 to 48 hours (aOR, 1.184; 95% CI, 1.009-1.389). Odds of in-hospital mortality increased significantly with increased fluid balance at 24 to 36 hours (aOR, 1.201; 95% CI, 1.052-1.371). Odds of 30-day mortality increased significantly with increased fluid balance at 24 to 36 hours (aOR, 1.189; 95% CI, 1.039-1.361).

CONCLUSIONS

Increased fluid balance was associated with increased risk of organ failure and mortality. Increased fluid output may decrease mortality.

Pancreatic fluid collections: Clinical manifestations, diagnostic evaluation and management

Pancreatic fluid collections (PFC), including pancreatic pseudocysts and walled-off pancreatic necrosis, are a known complication of severe acute pancreatitis. A majority of the PFCs remain asymptomatic and resolve spontaneously. However, some PFCs persist and can become symptomatic. Persistent PFCs can also cause further complications such as the gastric outlet, intestinal, or biliary obstruction and infection. Surgical interventions are indicated for the drainage of symptomatic sterile and infected PFCs. Management of PFCs has evolved from a primarily surgical or percutaneous approach to a less invasive endoscopic approach. Endoscopic interventions are associated with improved outcomes with lesser chances of complications, faster recovery time, and lower healthcare utilization. Endoscopic ultrasound-guided drainage of PFCs using lumen-apposing metal stents has become the preferred approach for the management of symptomatic and complicated PFCs.

Calcific pancreatitis uncovering a multiple endocrine neoplasia type 1: A case report in compliance with the scare guidelines

INTRODUCTION

Chronic pancreatitis are mostly linked to alcoholic consumption or biliary lithiasis; and Primary hyperthyroidism (PHPT) is still a very rare association and the exact physiopathology is yet to be fully unveiled to the human knowledge. We present the first case report of a calcific pancreatitis associated with not only PHPT but a multiple endocrine neoplasia (MEN) type 1.

CASE PRESENTATION

We report the case of a 52 years old woman suffering from mellitus diabetes consulting the emergency rooms for acute pancreatitis with hyperlipasemia and hypercalcemia whom final imaging discovered a pituitary gland adenoma, a left surrenal adenoma, and a parathyroid adenoma, and for the pancreas it reveiled an acute mild pancreatitis with a background of calcifications, no gallstones, no bone or renal abnormalities; and the parathyroidectomy was performed following the minimally invasive selective technique.

DISCUSSION

Calcemia levels testing routinely performed help discover hyperparathyroidism. The associations of chronic pancreatic inflammation to hyperparathyroidism needs to be studied, even if hypercalcemia is prooven to be a risk factor of pancreatitis; the mechanism behind this association is brievely described. parathyroidectomy is the definitive cure for hyperparathyroidism, the technique advances has shown effective localization of the responsible adenoma and the intraoperative testing of parathormon levels after resection decreasing is a very reliable extemporaneous sign for the success of the procedure.

CONCLUSION

The endocrine system is synchronized; meaning the injury of one gland should start the search for others. In our case, the first main lead should not have been the acute pancreatitis but her diabetes. In the future we suggest that diabetes primary explorations may need a pancreatic imaging and endocrine explorations even though it could get pricier for the healthcare system, but giving the complications that we could prevent; it is to be considered.

Intra-abdominal hypertension and abdominal compartment syndrome in patients admitted to the ICU

BACKGROUND

Intra-abdominal hypertension is frequently present in critically ill patients and is an independent predictor for mortality. Risk factors for intra-abdominal hypertension and abdominal compartment syndrome have been widely investigated. However, data are lacking on prevalence and outcome in high-risk patients. Our objectives in this study were to investigate prevalence and outcome of intra-abdominal hypertension and abdominal compartment syndrome in high-risk patients in a prospective, observational, single-center cohort study.

RESULTS

Between March 2014 and March 2016, we included 503 patients, 307 males (61%) and 196 females (39%). Patients admitted to the intensive care unit with a diagnosis of pancreatitis, elective or emergency open abdominal aorta surgery, orthotopic liver transplantation, other elective or emergency major abdominal surgery and trauma were enrolled. One hundred and sixty four (33%) patients developed intra-abdominal hypertension and 18 (3.6%) patients developed abdominal compartment syndrome. Highest prevalence of abdominal compartment syndrome occurred in pancreatitis (57%) followed by orthotopic liver transplantation (7%) and abdominal aorta surgery (5%). Length of intensive care stay increased by a factor 4 in patients with intra-abdominal hypertension and a factor 9 in abdominal compartment syndrome, compared to patients with normal intra-abdominal pressure. Rate of renal replacement therapy was higher in abdominal compartment syndrome (38.9%) and intra-abdominal hypertension (8.2%) compared to patients with normal intra-abdominal pressure (1.2%). Both intensive care mortality and 90-day mortality were significantly higher in intra-abdominal hypertension (4.8% and 15.2%) and abdominal compartment syndrome (16.7% and 38.9%) compared to normal intra-abdominal pressure (1.2% and 7.1%). Body mass index (odds ratio 1.08, 95% confidence interval 1.03-1.13), mechanical ventilation at admission (OR 3.52, 95% CI 2.08-5.96) and Apache IV score (OR 1.03, 95% CI 1.02-1.04) were independent risk factors for the development of intra-abdominal hypertension or abdominal compartment syndrome.

CONCLUSIONS

The prevalence of abdominal compartment syndrome was 3.6% and the prevalence of intra-abdominal hypertension was 33% in this cohort of high-risk patients. Morbidity and mortality increased when intra-abdominal hypertension or abdominal compartment syndrome was present. The patient most at risk of IAH or ACS in this high-risk cohort has a BMI > 30 kg/m² and was admitted to the ICU after emergency abdominal surgery or with a diagnosis of pancreatitis.

Delayed referral increases the need for surgery and intervention in patients with acute pancreatitis

BACKGROUND

The aim was to study the outcomes of acute pancreatitis (AP) patients who were referred from other facilities to a tertiary care centre.

METHODS

Patients with AP were who were referred from other hospitals to a tertiary care centre between April 2013 and September 2019 were studied and their outcomes were analysed. Comparison was made between patients referred early (≤7 days) versus those referred late (>7 days).

RESULTS

Of the 838 patients seen by us, 650 patients (77.6%) were referred from other centres. Median (interquartile range) onset to admission interval was 5 (4-7) days for those who were referred ≤7 days and was 16 (11-30) for those who were referred >7 days. Patients referred beyond 7 days of pain onset had higher rates of development of organ failure (P = 0.007), including acute lung injury (P = 0.008) and acute kidney injury (P = 0.026), infected necrosis (P < 0.0001), requirement of endoscopic/percutaneous drainage (P < 0.001) and need for surgery (P < 0.02) compared to patients who were referred ≤7 days of pain onset. Mortality was however similar in the two groups.

CONCLUSION

Patients with AP referred to a specialized centre with AP early (≤7 days) have better outcomes than those referred late (>7 days) from other facilities.

Severe acute pancreatitis: eight fundamental steps revised according to the 'PANCREAS' acronym

Severe acute pancreatitis remains a life-threatening condition, responsible for many disorders of homeostasis and organ dysfunction. By means of a mnemonic 'PANCREAS', eight important steps in the management of severe acute pancreatitis are highlighted. These steps follow the principle of goal-directed therapy and should be borne in mind after diagnosis and during clinical treatment. The first step is perfusion: the goal is to reach a central venous pressure of 12-15mmHg, urinary output 0.5-1ml/kg/hour and inferior vena cava collapse index greater than 48%. Next is analgesia: multimodal, systemic and combined pharmacological agent and epidural block are possibilities. Third is nutrition: precocity, enteral feeding in gastric or post-pyloric position. Parenteral nutrition works best in difficult cases to achieve the individual total caloric value. Fourth is clinical: mild, moderate or severe pancreatitis according to the Atlanta criteria. Radiology is fifth: abdominal computed tomography on the fourth day for prognosis or to modify management. Endoscopy is sixth: endoscopic retrograde cholangiopancreatography (cholangitis, unpredicted clinical course and ascending jaundice); management of pancreatic fluid collection and 'walled-off necrosis'. Antibiotics come next: infectious complications are common causes of morbidity. The only rational indication for antibiotics is documented pancreatic infection. The last step is surgery: the dogma is represented by the 'three Ds' (delay, drain, debride). The preferred method is a minimally invasive step-up approach, which allows for gradually more invasive procedures when the previous treatment fails.

Hemorrhage complicating the course of severe acute pancreatitis

Backgrounds/Aims

The course of severe acute pancreatitis (SAP) complicated by hemorrhage is associated with poor outcome.

Methods

Twenty-four (13%) out of 183 cases of SAP had hemorrhagic complications- 12 intraabdominal & 12 intraluminal, 13 had major & 11 had minor and 16 had de-novo & 8 post-surgical bleeding. The mean duration of pancreatitis prior to bleeding was 27±27.2 days.

Results

Predictors of haemorrhage on univariate analysis were delayed admission (0.037), more than one organ failure (p=0.008), presence of venous thrombosis (p=0.033), infective necrosis (0.001) and systemic sepsis – bacterial (0.037) & fungal (p=0.032). On multivariate analysis infected necrosis (OR=11.82) and presence of fungal sepsis (OR=3.73) were the significant factors. Patients presenting with more than one organ failure and bacterial sepsis had borderline significance on multivariate analysis. Need for surgery (50% vs. 12.6%), intensive care stay (7.4±7.9 vs. 5.4±5.2 days) and mortality (41.7% vs. 10.7%) were significantly higher in patients who suffered haemorrhage. Seven of the 13 with major bleeding had pseudoaneurysms-4 were embolized, 4 needed surgery including 1 embolization failure. Seven with intraabdominal bleeding required surgical intervention, 2 had successful embolization and 3 had expectant management. CT severity index and surgical intervention, were significantly associated with intraabdominal bleeding. Organ failure, presence of pseudoaneurysm and surgical intervention were associated with major bleeding.

Conclusions

Hemorrhage in SAP was associated with increased morbidity and mortality. Infected necrosis accentuated the degradation of the vessel wall, which predispose to hemorrhage. Luminal bleeding may be indicative of erosion into the adjacent viscera by the pseudoaneurysm.

Short-term outcome of local pancreatic complications in a public hospital from North India

INTRODUCTION

Dearth in the literature pertaining to natural history of acute pancreatitis (AP) necessitates further studies to evaluate the outcome of local pancreatic complications using the revised Atlanta classification.

OBJECTIVE

To evaluate the outcomes of local pancreatic complications after first episode of AP, risk factors for their development and predictors of need for intervention.

METHODOLOGY

A prospective study was carried out on 50 consecutive cases of AP who developed local pancreatic complications from January 2015 to July 2016. After imaging, they were categorised into acute pancreatic fluid collection (APFC) and acute necrotic collection (ANC). The risk factors for their development and the need for intervention were assessed.

RESULTS

Of 50 patients, 20 developed APFC and 30 ANC. Of ANC cases, 27 progressed into walled-off necrosis (WON), of which 4 were managed conservatively and 18 collections were drained percutaneously, 3 underwent endotherapy (transmural drainage and endoscopic necrosectomy) and 2 died following percutaneous drainage (PCD) and surgery. Ten WON collections persisted at the end of 3rd month. Collections resolved in 6 of 20 APFC patients, 14 formed pseudocysts, of which 10 showed resolution with or without intervention and only 4 of them persisted at the end of study. Size of collection ≥6 cm was independent predictor of intervention irrespective of type of collections while in cases of ANC, extensive necrosis (>30%) and multiple collections were more likely to require intervention.

CONCLUSION

Incidence of ANC is more common than APFC when local pancreatic fluid collections develop most of which develop WON and require intervention.

Six-month flare risk after discontinuing long-term methotrexate treatment in patients having rheumatoid arthritis with low disease activity

OBJECTIVES

We investigated the disease flare rate in patients with rheumatoid arthritis (RA) who achieved low disease activity following long-term methotrexate (MTX) treatment and the factors related to flare.

METHODS

This retrospective longitudinal cohort study included patients with RA and low disease activity who were exposed to MTX for >10 years. Disease flare was defined as an increase in Disease Activity Score of 28 joints (DAS28) of >1.2 within 6 months of discontinuation of MTX. Logistic regression analysis was performed to identify the factors associated with flare.

RESULTS

In total, 97 patients with RA were included in the study. The mean baseline DAS28 was 1.96 ± 0.56. The median cumulative MTX dose was 11.7 g; the median duration of exposure to MTX was 19 years. Following MTX discontinuation, flare occurred in 43 (44.3%) patients; the median time to flare was 99 (28-168) days. According to univariate logistic regression analysis, C-reactive protein, erythrocyte sedimentation rate (ESR) at discontinuation, the average ESR in the 6 months before discontinuation of MTX, a weekly dose of MTX before discontinuation, and use of other conventional synthetic disease-modifying antirheumatic drugs were associated with a higher risk of disease flare. In multivariable analysis, a weekly dose of MTX before discontinuation (odds ratio 1.014; 95% CI 1.014-1.342; P = .031) was significantly associated with flare risk.

CONCLUSION

Among patients with RA who achieved low disease activity with long-term treatment with MTX, more than half remained flare free after MTX discontinuation. A higher MTX dose before discontinuation was associated with a high flare risk.

Impact of Clinical, Laboratory and Fluid Therapy Variables on Hospital Length of Stay for Children with Acute Pancreatitis

PURPOSE

There have been many efforts to develop generalizable severity markers in children with acute pancreatitis (AP). Expert opinion panels have developed consensus guidelines on management but it is unclear if these are sufficient or valid. Our study aims to assess the effect of clinical and laboratory variables, in addition to treatment modality on hospital length of stay (LOS) as a proxy variable for severity in pediatric patients admitted with AP.

METHODS

We conducted a retrospective chart review of patients between ages of 0-18 years, who were admitted with AP at 2 institutions between 2013-2018, John R. Oishei Children's Hospital (Buffalo, NY, USA) and Medical University of South Carolina Children's Hospital (Charleston, SC, USA). We constructed three linear regression models to analyze the effect of clinical signs of organ dysfunction, laboratory markers and fluid intake on hospital LOS.

RESULTS

Ninety-two patients were included in the study. The mean age was 12 years (range, 7.6-17.4 years), 55% were females, and median LOS was 3 days. The most frequent cause of AP was idiopathic. Our study showed that elevated blood urea nitrogen (BUN) on admission (p<0.005), tachycardia that lasted for ≥48 hours (p<0.001) and need for fluid resuscitation were associated with increase LOS. Total daily fluid intake above maintenance did not have a significant effect on the primary outcome (p=0.49).

CONCLUSION

Elevated serum BUN on admission, persistent tachycardia and need for fluid resuscitation were associated with increase LOS in pediatric AP. Daily total fluid intake above recommended maintenance did not reduce LOS.

Paediatric acute pancreatitis: Clinical profile and natural history of collections

BACKGROUND & AIMS

Acute Pancreatitis (AP) tends to have a benign course in children. However there is a paucity of information with respect to severity of AP in children, the categorization of collections viz., walled off necrosis (WON)& pseudocyst and their natural history & outcomes.

METHODS

A retrospective medical record review of 187 children with pancreatitis diagnosed and managed at our centre was performed.

RESULTS

101 children (59% boys, Median age 9yrs) had AP of which 37.6%, 60.4% and 2% had mild, moderately severe and severe AP. 61.4%(62) had PFC at diagnosis; 34%(21) acute pancreatic fluid collections (APFC) and 66%(41) acute necrotic collections (ANC). 52.3%(11of21) of APFC evolved into pseudocysts & 68.2%(28of41) of ANC into WON's. Drainage was required in 31%(12of39) of persisting collections, more frequently in children with traumatic AP. Percutaneous catheter drainage (PCD) was done in 6 children and endoscopic ultrasound (EUS) guided cystogastrostomy with placement of plastic or self expanding metal stents (SEMS) in 6 children.

CONCLUSIONS

Moderately severe AP is common in hospitalized children with AP with PFC developing in 61.4%, majority being APFC. 48% of APFC and 32% of ANC will resolve and the rest evolve into pseudocyst or WON. Spontaneous resolution is more likely in children with non -traumatic AP having pseudocysts rather than WON's.

Worldwide Variations in Demographics, Management, and Outcomes of Acute Pancreatitis

BACKGROUND & AIMS

Few studies have compared regional differences in acute pancreatitis. We analyzed data from an international registry of patients with acute pancreatitis to evaluate geographic variations in patient characteristics, management, and outcomes.

METHODS

We collected data from the APPRENTICE registry of patients with acute pancreatitis, which obtains information from patients in Europe (6 centers), India (3 centers), Latin America (5 centers), and North America (8 centers) using standardized questionnaires. Our final analysis included 1612 patients with acute pancreatitis (median age, 49 years; 53% male, 62% white) enrolled from August 2015 through January 2018.

RESULTS

Biliary (45%) and alcoholic acute pancreatitis (21%) were the most common etiologies. Based on the revised Atlanta classification, 65% of patients developed mild disease, 23% moderate, and 12% severe. The mean age of patients in Europe (58 years) was older than mean age for all 4 regions (46 years) and a higher proportion of patients in Europe had comorbid conditions (73% vs 50% overall). The predominant etiology of acute pancreatitis in Latin America was biliary (78%), whereas alcohol-associated pancreatitis accounted for the highest proportion of acute pancreatitis cases in India (45%). Pain was managed with opioid analgesics in 93% of patients in North America versus 27% of patients in the other 3 regions. Cholecystectomies were performed at the time of hospital admission for most patients in Latin America (60% vs 15% overall). A higher proportion of European patients with severe acute pancreatitis died during the original hospital stay (44%) compared with the other 3 regions (15%).

CONCLUSIONS

We found significant variation in demographics, etiologies, management practices, and outcomes of acute pancreatitis worldwide. ClinicalTrials.gov number: NCT03075618.

Management of pancreatic collections: an update

Pancreatic fluid collections frequently occur in the context of moderate and severe acute pancreatitis, and may also appear as a complication of chronic pancreatitis, pancreatic surgery or trauma. It is essential to adhere to the Atlanta classification nomenclature that subclassifies them into four categories (acute peripancreatic fluid collections, acute necrotic collections, pseudocysts, and walled-off necrosis) since it has an impact on prognosis and management. Pseudocysts and walled-off pancreatic necrosis are encapsulated pancreatic fluid collections characterized by a surrounding inflammatory wall, which typically develops three to four weeks after the onset of acute pancreatitis. Most pancreatic fluid collections resolve spontaneously and do not require intervention. However, when they become symptomatic or complicated drainage is indicated, and endoscopic ultrasound-guided drainage has become first-line treatment of encapsulated collections. Drainage of pseudocysts is relatively straightforward due to their liquid content. However, in walled-off necrosis the presence of solid necrotic debris can make treatment more challenging and therefore multidisciplinary management in experienced centers is recommended, being a step-up approach the current standard of care. In this review, we aim to address the management of pancreatic fluid collections with an especial focus on endoscopic drainage.

Initial experience with 3D CT cinematic rendering of acute pancreatitis and associated complications

Inflammation of the pancreas can present with a wide range of imaging findings from mild enlargement of the gland and surrounding infiltrative fat stranding through extensive glandular necrosis. Complications of pancreatitis are varied and include infected fluid collections, pseudocysts, and vascular findings such as pseudoaneurysms and thromboses. Cross-sectional imaging with computed tomography (CT) is one of the mainstays of evaluating patients with pancreatitis. New methods that allow novel visualization volumetric CT data may improve diagnostic yield for the detection of findings that provide prognostic information in pancreatitis patients or can drive new avenues of research such as machine learning. Cinematic rendering (CR) is a photorealistic visualization method for volumetric imaging data that are being investigated for a variety of potential applications including the life-like display of complex anatomy and visual characterization of mass lesions. In this review, we describe the CR appearance of different types of pancreatitis and complications of pancreatitis. We also note possible future directions for research into the utility of CR for pancreatitis.

The augmented role of pancreatic imaging in the era of endoscopic necrosectomy: an illustrative and pictorial review

Endoscopic cystogastrostomy for mature pancreatic collections has long been recognized. However, FDA approval of newer lumen-apposing metallic stents in 2014 has now brought pancreatic necrosectomy to the endoscopic realm. Endoscopic drainage of Walled-off necrosis and direct endoscopic necrosectomy are technically challenging procedures with higher rates of complications. Collaborative clinical decision making both pre- and post-procedurally between the radiologist, endoscopist, and the surgeon can greatly improve outcomes in necrotizing pancreatitis. Herein, we review the basic pathophysiology that underlies progressive radiographic findings in NP, value of preprocedural imaging, current management algorithms, newer tools, and techniques as well as potential post-procedure complications on imaging follow-up after endoscopic interventions in necrotizing pancreatitis.

Corrosive substances ingestion: a review

Corrosive chemical substance ingestions are a major problem, especially in developing countries, but also in developed countries such as the United States, France, and Belgium. Ingestions may be deliberate as suicide attempts (mostly in adolescents and adults) or accidental (mostly in children). The results can be devastating in terms of individual suffering and disability, but also in terms of resource utilization and costs. In developing countries, outcomes may be worse because of limited medical/surgical resources. Common sequelae include gastrointestinal (GI) tract (esophagus, stomach, pylorus, and duodenum) stricture formation, GI tract perforation, and hemorrhage. Systemic effects may also occur, such as disseminated intravascular coagulation (DIC), multi-organ system failure, and sepsis. Various interventions in the acute phase to reduce the severity of injury have been attempted, but there are no large controlled clinical trials to demonstrate efficacy. Dilation therapy in various forms is commonly used for the treatment of strictures and a variety of surgical procedures including esophagectomy and delayed replacement may be required in severe corrosive injury cases.

Disconnected pancreatic duct syndrome predicts failure of percutaneous therapy in necrotizing pancreatitis

BACKGROUND/OBJECTIVES

Minimally invasive approaches, such as percutaneous drainage (PD), are increasingly utilized as initial treatment in necrotizing pancreatitis (NP) requiring intervention. Predictors of success of PD as definitive treatment are lacking. Our aim was to assess the application, predictors of success, and natural history of PD in NP. We hypothesized that necrosis morphology patterns and disconnected pancreatic duct syndrome (DPDS) may predict the ability of PD to provide definitive therapy.

METHODS

714 NP patients were treated from 2005 to 2018. Patients achieving disease resolution with PD alone (PD) were compared to those requiring an escalation in intervention (Step). Outcomes were compared between groups using independent samples t-test, Fisher's exact test, and Pearson's correlation, as appropriate. P < 0.05 was accepted as statistically significant.

RESULTS

115 patients were initially managed with PD (42 PD, 73 Step). No difference in necrosis morphology was seen between the two groups. The PD group underwent significantly more repeat percutaneous interventions (PD, 3.2; Step, 2.0; P = 0.0006) including additional drain placement and drain upsize/reposition procedures. Patients with DPDS were more likely to require an escalation in intervention (odds ratio, 3.4; 95% confidence interval, 1.5-7.6; P = 0.003). The mean number of months to NP resolution was similar (PD, 5.7; Step, 5.8; P = 0.9). Mortality was similar (PD, 7%; Step 14%, P = 0.3).

CONCLUSIONS

Necrosis morphology in and of itself does not reliably predict successful definitive treatment by percutaneous drainage. However, patients with disconnected pancreatic duct syndrome were less likely to have definitive resolution with PD alone.

The Enlargement of Abdominal Lymph Nodes Is a Characteristic of Autoimmune Liver Disease

Background

The enlargement of lymph nodes is a common clinical sign in connective tissue disease (CTD) and viral hepatitis. In this research, we evaluated the incidence of enlarged lymph nodes in autoimmune liver diseases (AILD). Moreover, we identified the clinical significance of abdominal lymph node enlargement in AILD.

Methods

The characteristics of abdominal lymph nodes, including their morphology and distribution, were assessed by ultrasonography and computed tomography in 125 patients with AILD, 54 with viral hepatitis, 135 with CTD, and 80 healthy controls. The pathological and laboratory results of 106 AILD patients were collected to analyze the association between lymphadenectasis and disease activity.

Results

Enlargement of abdominal lymph nodes was found in 69.6% of patients with AILD, 63% of patients with viral hepatitis, 29.6% of patients with CTD, and 2% of healthy controls. Alkaline phosphatase (ALP), glutamate transpeptidase (GGT), and immunoglobulin M (IgM) levels were significantly increased in AILD patients with lymphadenectasis (LA) in contrast to patients without lymphadenectasis (NLA) (P < 0.05). The pathological characteristics of inflammation, cholestasis, and focal necrosis were more common in the LA group than in the NLA group (P < 0.05). As shown by multivariate logistic regression analysis, interface hepatitis (OR = 3.651, P < 0.05), cholestasis (OR = 8.137, P < 0.05), and focal necrosis (OR = 5.212, P < 0.05) were related to LA.

Conclusions

The percentage of abdominal lymph node enlargement in AILD subjects was significantly higher than that in CTD subjects. Therefore, the enlargement of lymph nodes can represent a noninvasive indicator of histological and biochemical inflammation activity in AILD.

Diagnosis and management of toxicities of immune checkpoint inhibitors in hepatocellular carcinoma

Immune checkpoint inhibitors (ICIs) have reshaped cancer therapy. ICIs enhance T cell activation through various mechanisms and may help reverse the exhausted phenotype of tumour-infiltrating lymphocytes. However, disrupting the key role that checkpoint molecules play in immune homeostasis may result in autoimmune complications. A broad range of immune-related adverse events (irAEs) involve almost every organ but mostly affect the skin, digestive system, lung, endocrine glands, nervous system, kidney, blood cells, and musculoskeletal system. They are usually manageable but can be life-threatening. The incidence of irAEs is not very different in patients with hepatocellular carcinoma (HCC) compared to other tumour types, although there is a trend towards a higher incidence of hepatic irAEs. HCC usually develops on a background of cirrhosis with associated systemic manifestations. Extrahepatic organ dysfunction in cirrhosis may cause signs and symptoms that overlap with irAEs or increase their severity. Available guidelines for the management of irAEs have not specifically considered the assessment of toxicities in the context of patients with liver cancer and cirrhosis. This review addresses the toxicity profile of ICIs in patients with HCC, focusing on the challenges that the underlying liver disease poses to their diagnosis and management. Challenges include late recognition, inadequate work-up and delayed treatment, overdiagnosis and inappropriate interruption of ICIs, complications caused by immunosuppressive therapy, and increased cost. A specific algorithm for the management of hepatic irAEs is provided.

Various Endoscopic Techniques for Treatment of Consequences of Acute Necrotizing Pancreatitis: Practical Updates for the Endoscopist

Despite great progress in acute pancreatitis (AP) treatment over the last 30 years, treatment of the consequences of acute necrotizing pancreatitis (ANP) remains controversial. While numerous reports on minimally invasive treatment of the consequences of ANP have been published, several aspects of interventional treatment, particularly endoscopy, are still unclear. In this article, we attempt to discuss these aspects and summarize the current knowledge on endoscopic therapy for pancreatic necrosis. Endotherapy has been shown to be a safe and effective minimally invasive treatment modality in patients with consequences of ANP. The evolution of endoscopic techniques has made endoscopic drainage more effective and reduced the use of other minimally invasive therapies for pancreatic necrosis.

Chronic Pancreatitis: Managing a Difficult Disease

Chronic pancreatitis is characterized by progressive, irreversible morphologic and functional changes that are most commonly attributed to environmental insults, particularly when there is a genetic or anatomic predisposition. Heavy alcohol use and cigarette smoking are the most common environmental risk factors, but both may be absent. Antecedent episodes of acute pancreatitis occur in about half of patients. Abdominal pain is the most common symptom and requires a tailored approach depending on the anatomic changes in the pancreas. Other clinical manifestations include diabetes mellitus, exocrine pancreatic insufficiency, metabolic bone disease, pancreatic cancer, and anatomic complications. Current disease management is centered on risk factor reduction and screening for and treating disease complications. There are no current therapies to delay or retard disease progression, but there are ongoing efforts to more fully understand the natural history of chronic pancreatitis and underlying mechanisms of disease. These studies are expected to provide insights that will transform our approach to disease management and provide increased hope to patients.

Association between venous thromboembolism and acute pancreatitis: An analysis from the nationwide inpatient sample

BACKGROUND AND AIMS

Acute inflammation of the pancreas may trigger a systemic inflammatory response and initiate coagulation. Few studies have been conducted on the association between venous thromboembolism (VTE) and acute pancreatitis (AP). We investigated the incidence and risk of VTE in patients with AP.

METHODS

We conducted a retrospective cohort analysis for the nationwide AP cohort. We identified 91 786 patients with AP and 183 557 controls who were frequency-matched according to sex, age (5-y interval), and index year from the National Health Insurance Research Database between 2000 and 2008. The patients and controls were followed until diagnosis of deep vein thrombosis (DVT) or pulmonary embolism (PE), death or the end of 2011.

RESULTS

The nationwide cohort study showed that patients with AP exhibited a higher incidence of VTE (13.1 vs 5.65 per 10 000 person-y) than did the controls. After covariates were controlled for, the patients with AP had a 1.88-fold higher risk of VTE than did the controls (adjusted hazard ratios [aHR] = 1.88; 95% confidence intervals [CI] = 1.68-2.10). The incidence rates of DVT and PE were higher in the patients with AP than in the controls, irrespective of sex, age or comorbidity. The patients with AP exhibited a 1.86-fold higher aHR of DVT (95% CI = 1.63-2.12) and a 1.92-fold higher aHR of PE (95% CI = 1.59-2.31) than did the controls.

CONCLUSION

Patients with AP exhibited a significantly higher risk of VTE than did the controls.

Current concepts for the diagnosis of acute pancreatitis by multiparametric magnetic resonance imaging

Acute pancreatitis is classically characterized by acute chemical inflammation of the pancreatic gland itself, peripancreatic tissues, and even remote organs. The newly revised Atlanta Classification 2012 redefined the patterns of pancreatic necrosis and local complications in acute pancreatitis. The Atlanta Classification's novelty was in emphasizing that extrapancreatic fat necrosis, which leads to walled-off necrosis, is associated with poor prognosis. Conversely, the free fluid liquid was considered to be less related to complications. The Atlanta's classification's main weakness is that it is mainly computed tomography (CT) based, as contrast-enhanced CT is the predominant imaging technique used for evaluating a wide range of pathological processes of acute pancreatitis. However, some local complications are difficult to distinguish accurately on CT. Recent advances, including significantly better soft-tissue contrast, favor multiparametric magnetic resonance imaging (mpMRI) for a more comprehensive assessment of acute pancreatitis pathology, particularly for small necrotic/fat debris within a collection. In addition, the MRI severity index (MRSI), which combines Balthazar's grade points and points of the extent of pancreatic necrosis, has been proven to be crucial for the initial evaluation, staging, and prognosis of acute pancreatitis. Other innovations, such as the recognition of important MRI features in acute pancreatitis and the utilization of newer, more effective terminology for imaging reporting assistance in the differentiation of the common local complications following this disease, have improved the treatment for acute pancreatitis. In this paper, with reference to the 2012 revised Atlanta classification, we review the strengths and limitations of MRI for identifying acute pancreatitis, the MRI findings of a spectrum of pathological entities, and the important local complications secondary to acute pancreatitis.

Ward-based Goal-Directed Fluid Therapy (GDFT) in Acute Pancreatitis (GAP) trial: study protocol for a feasibility randomised controlled trial

INTRODUCTION

Acute pancreatitis is an inflammatory disease of the pancreas with high risk of developing multiorgan failure and death. There are no effective pharmacological interventions used in current clinical practice. Maintaining fluid and electrolyte balance is the mainstay of supportive management. Goal-directed fluid therapy (GDFT) has been shown to decrease morbidity and mortality in surgical conditions with systemic inflammatory response. There is currently no randomised controlled trial (RCT) investigating the role of GDFT based on cardiac output parameters in patients with acute pancreatitis in the ward setting. A feasibility trial was designed to determine patient and clinician support for recruitment into an RCT of ward-based GDFT in acute pancreatitis, adherence to a GDFT protocol, safety, participant withdrawal, and to determine appropriate endpoints for a subsequent larger trial to evaluate efficacy.

METHODS AND ANALYSIS

The GDFT in Acute Pancreatitis trial is a prospective two-centre feasibility RCT. Eligible adults admitted with new onset of acute pancreatitis will be enrolled and randomised into ward-based GDFT (n=25) or standard fluid therapy (n=25) within 6 hours from the diagnosis and continuing for the following 48 hours. Cardiac output parameters will be monitored with a non-invasive device (Cheetah NICOM; Cheetah Medical). The intervention group will consist of a protocolised GDFT approach consisting of stroke volume optimisation with crystalloid fluid boluses, while the control group will receive standard care fluid therapy as advised by the clinical team. The primary endpoint is feasibility. Secondary endpoints will include safety of the intervention, complications, mortality, admission to intensive care unit, cost and quality of life.

ETHICS AND DISSEMINATION

Ethics approval was granted by the London Central Research Ethics Committee (17/LO/1235, project ID: 221872). The results of this trial will be presented to international conference with interest in general surgery and acute care and published in a peer-reviewed journal.

TRIAL REGISTRATION NUMBER

ISRCTN36077283.

Lavage through percutaneous catheter drains in severe acute pancreatitis: Does it help?A randomized control trial

AIMS

There is no study comparing large volume lavage through image guided percutaneously placed drains in severe acute pancreatitis.

METHODS

Of the 114 randomized patients, 60 eligible candidates were randomly allocated to - Lavage Treatment (LT) group (28 patients) and Dependent Drainage (DD) group (32 patients). Primary end point was reversal of pre-existing organ failure, development of new onset organ failure, need for surgery, mortality and hospital stay.

RESULTS

Both the groups were comparable in terms of demographic data, onset and severity of pancreatitis. LT group had higher infected pancreatic necrosis (75% vs 50%,p = 0.047). On intention to treat analysis, lavage treatment group showed a significant reversal of persistent organ failure (84% vs 50%, p = 0.23), reduction in APACHEII scores (3.5 ± 3.405 vs 1.16 ± 3.811 p = 0.012), as measured at the time of placement of PCD to cessation of intervention. There was no difference in development of new onset organ failure in the two groups (25% vs37.5% p=.290). 75% in LT group and 69% in DD group improved with PCD alone. There was no difference in the catheter related complications and number of catheters used. The need for surgical intervention was comparable in two groups (18.8% vs 14.3% p=.737). There was a trend toward decreased mortality in group A (18.8% vs 28.8% p=.370).

CONCLUSION

Large volume lavage trough PCD improves organ failure and this translates into trend towards reduced mortality.

Spontaneous regression of asymptomatic walled-off pancreatic necrosis

INTRODUCTION

Asymptomatic walled-off pancreatic necrosis (WOPN) should be treated conservatively, irrespective of the extent and size of the necrosis. The aim of this study was to evaluate the efficacy and safety of a strategy involving the observation of patients with asymptomatic WOPN over a long period of time.

MATERIAL AND METHODS

This study involved the retrospective analysis of 368 patients hospitalized in our department between 2010 and 2016, due to acute pancreatitis and its consequences in the form of pancreatic and peripancreatic fluid collection.

RESULTS

Walled-off pancreatic necrosis was identified in 168/368 (46%) patients. 124/168 (74%) patients with WOPN required interventional treatment due to clinical symptoms arising from the presence of the WOPN. Asymptomatic WOPN was identified in 44/168 (26%) patients. The mean observation time of patients with asymptomatic WOPN was 417.02 days (range: 47-1149 days). Only 1 out of the 44 patients (2%) failed to complete the follow-up. Complete regression of WOPN occurred in 30/44 (68%) patients. The presence of symptoms related to WOPN were identified in 13/44 (30%) patients during the observation. The most frequent indication for interventional treatment of WOPN was infection of the pancreatic necrosis, which was identified in 6/13 patients (46%). Altogether, 137/168 (82%) patients with WOPN required interventional treatment.

CONCLUSIONS

The majority of patients with WOPN required interventional treatment. This study provided evidence to support the view that careful observation of patients with asymptomatic WOPN is an efficient and safe treatment strategy. Long-term observation of such patients showed that most will experience spontaneous regression of asymptomatic WOPN without any other form of interventional treatment.

Management of Severe Acute Pancreatitis

Acute pancreatitis is one of the most common causes of hospitalisation from gastrointestinal diseases. The causes of pancreatitis vary between countries. Acute pancreatitis is classified based on Revised Atlanta classification 2013 as mild, moderately severe and severe acute pancreatitis. Acute pancreatic severity can be stratified by scoring systems such as Ranson's score, BISAP score, APACHE-II score, SOFA score. In severe acute pancreatitis, to diagnose, abdominal pain raised amylase or lipase, supported imaging finding and organ failure. Organ failure can be diagnosed by using Modified Marshall Scoring System. Management is started conservatively, which are fluid resuscitation, enteral nutrition, analgesics, and antibiotics. Surgical management is indicated when infected pancreas necrosis is detected. In this review, we will discuss the current management based on recent research.

Acute necrotising pancreatitis - early management in the district general hospital and tertiary hepato-pancreatico-biliary unit

Acute pancreatitis is a common general surgical emergency presentation. Up to 20% of cases are severe and can involve necrosis with high associated morbidity and mortality. It is most commonly due to gallstones and excess alcohol consumption. All patients with acute pancreatitis need to be scored for severity and patients with severe acute pancreatitis should be managed on the high dependency unit. The mainstay of early treatment is supportive, with care to ensure strict fluid balance and optimisation of end organ perfusion. There is no role for early antibiotic use in acute necrotising pancreatitis and antibiotics should only be used in the presence of positive cultures. Nutritional support is vitally important in improving outcomes in necrotising pancreatitis. This should ideally be provided enterally using an naso-jejunal tube if the patient cannot tolerate oral intake. Patients with significant early necrosis, persisting organ dysfunction, infected walled off necrosis requiring intervention or haemorrhagic pancreatitis should be referred to a regional hepato-pancreatico-biliary unit for advice or transfer. Percutaneous and endoscopic necrosectomy has replaced open surgery due to improved outcomes. Acute necrotising pancreatitis remains a complex surgical emergency with high morbidity and mortality that requires a multidisciplinary approach to attain optimum outcomes. The mainstay of treatment is supportive care and nutritional support. Patients with significant pancreatic necrosis or infected collections requiring drainage require input from a tertiary HPB unit to guide management.

Endoscopic findings and outcome in caustic ingestion of acidic and alkaline agents in adults: A retrospective analysis

Caustic ingestion in adults is a rare but potentially life-threatening problem. It remains controversial whether endoscopic findings and mortality differ between acid and alkali ingestion. We compared ingestion of these agents and evaluated prediction parameters for survival and complications.Adult patients who presented with caustic ingestion were analyzed from 2005 to 2016. Mucosal injury was graded endoscopically by Zargar's score. Age, gender, intent of ingestion, caustic agents, comorbidities, management, complications, and mortality were examined.Thirty-one patients met inclusion criteria and were divided into acid (n = 10) and alkali group (n = 21). Ingestion of alkali resulted in higher grades (≥III) of esophageal (56% vs 24%, P = .01) and stomach injuries (43% vs 13%, P = .05) and was mostly done with suicidal intent (76% vs 30%, P = .003). Patients in the alkali group received more often surgical interventions, mechanical ventilation and tracheotomy. Overall complications including Zargar's-score ≥ grade III, mediastinitis, and aspiration pneumonia were higher in alkali group but all showed no statistical significance (P = .73). Mortality (acid: 1 (10%), alkali: 4 (19%), P = .52), age, gender, comorbidities, and intensive care management did not differ significantly between the groups. Chronic renal failure and mediastinitis were promising prediction parameters for mortality but did not reach statistical significance. No independent risk factors for the development of esophageal stenosis were identified.Alkaline agents caused a higher mucosal injury severity and were more often used in suicidal intent. Mediastinitis and chronic renal failure might be potential prediction parameters for survival but need to be evaluated in larger studies.

Comparative study of the outcome between alcohol and gallstone pancreatitis in a high-volume tertiary care center

BACKGROUND AND AIM

The two most common etiologies of acute pancreatitis (AP) are alcohol and gallstone. Whether etiology contributes to the outcome in patients with AP is an unresolved issue, more so in the severe form of the disease. The aim is to study the effects of the etiological factors of alcohol and gallstone on the disease course and the role of etiology in the subgroup of severe AP.

METHODS

Consecutive patients of AP with alcohol or gallstone etiology were included. Various severity parameters and various outcome measures, such as need for organ support, intensive care, surgical or radiological intervention, hospital stay, and mortality, were evaluated between the two groups.

RESULTS

Of the 759 patients, alcoholic pancreatitis was seen in 368 (48.5%), while gallstone disease was observed in 246 (32.4%). Gallstone pancreatitis occurred in older age (P < 0.0001), had a higher female predilection (P < 0.001), and a higher body mass index (P = 0.002) compared to alcohol pancreatitis. Both groups were similar in terms of development of various organ failures and various severity assessment scores. Alcoholic AP had higher rates of necrosis (P = 0.05) and the need for percutaneous catheter drainage (P = 0.02). Outcome measures such as length of hospital stay, need for intensive care, organ support, surgical intervention, or mortality were similar between the two groups. Subset analysis of severe AP (303 patients) showed no difference between the two etiologies with regard to outcome.

CONCLUSION

The outcome of AP was independent of the etiology of the disease, alcohol or gallstone, and more so in the severe form of the disease. The number of local complications tends to be slightly higher in the alcoholic group.

Acute Pancreatitis Task Force on Quality: Development of Quality Indicators for Acute Pancreatitis Management

INTRODUCTION

Detailed recommendations and guidelines for acute pancreatitis (AP) management currently exist. However, quality indicators (QIs) are required to measure performance in health care. The goal of the Acute Pancreatitis Task Force on Quality was to formally develop QIs for the management of patients with known or suspected AP using a modified version of the RAND/UCLA Appropriateness Methodology.

METHODS

A multidisciplinary expert panel composed of physicians (gastroenterologists, hospitalists, and surgeons) who are acknowledged leaders in their specialties and who represent geographic and practice setting diversity was convened. A literature review was conducted, and a list of proposed QIs was developed. In 3 rounds, panelists reviewed literature, modified QIs, and rated them on the basis of scientific evidence, bias, interpretability, validity, necessity, and proposed performance targets.

RESULTS

Supporting literature and a list of 71 proposed QIs across 10 AP domains (Diagnosis, Etiology, Initial Assessment and Risk Stratification, etc.) were sent to the expert panel to review and independently rate in round 1 (95% of panelists participated). Based on a round 2 face-to-face discussion of QIs (75% participation), 41 QIs were classified as valid. During round 3 (90% participation), panelists rated the 41 valid QIs for necessity and proposed performance thresholds. The final classification determined that 40 QIs were both valid and necessary.

DISCUSSION

Hospitals and providers managing patients with known or suspected AP should ensure that patients receive high-quality care and desired outcomes according to current evidence-based best practices. This physician-led initiative formally developed 40 QIs and performance threshold targets for AP management. Validated QIs provide a dependable quantitative framework for health systems to monitor the quality of care provided to patients with known or suspected AP.

Immediate and long-term outcome of corrosive ingestion

BACKGROUND

Corrosive ingestion (CI) has short- and long-term consequences. The aim of this study was to assess the outcome of mucosal injury grade ≥ 2A.

METHODS

Consecutive patients between January 2008 and January 2015 who presented within 48 h of CI were included. Details of substance ingested, intent, symptoms, injury grade at endoscopy, and treatment were obtained by a review of medical records. Patients aged less than 15 years or injury grade less than 2A were excluded. Patients were followed up using a structured symptom-based questionnaire and barium swallow.

RESULTS

A total of 112 patients were admitted with CI during the study period. Eighty-two patients were included in the study. There was no relationship between the presence of symptoms or oral mucosal injury and the grades of gastrointestinal mucosal injury. Grades 2B and 3A were the most common grades of mucosal injury. Five patients died at index hospitalization. Patients were followed up for a median period of 31 months (6-72) during which 11 patients were lost to follow up. During follow up, 2 patients with high-grade injury died as a consequence of CI and 4 died of unrelated causes. Sixteen (26.6%) patients remained symptomatic. Forty-three patients underwent barium swallow. Esophageal stricture was identified in 11 patients, gastric stricture in 8, and combined esophageal and gastric in 2. High-grade esophageal mucosal injury was associated with a high risk of stricture formation (p = 0.02).

CONCLUSIONS

CI is associated with high immediate and long-term morbidity and mortality.

Management of infected pancreatic necrosis in the intensive care unit: a narrative review

BACKGROUND

Severe acute pancreatitis is marked by organ failure and (peri)pancreatic necrosis with local complications such as infected necrosis. Infection of these necrotic collections together with organ failure remain the major causes of admission to an intensive care unit (ICU) in acute pancreatitis. Appropriate treatment of infected necrosis is essential to reduce morbidity and mortality. Overall knowledge of the treatment options within a multidisciplinary team-with special attention to the appropriate use of antimicrobial therapy and invasive treatment techniques for source control-is essential in the treatment of this complex disease.

OBJECTIVES

To address the current state of microbiological diagnosis, antimicrobial treatment, and source control for infected pancreatic necrosis in the ICU.

SOURCES

A literature search was performed using the Medline and Cochrane libraries for articles subsequent to 2003 using the keywords: infected necrosis, pancreatitis, intensive care medicine, treatment, diagnosis and antibiotic(s).

CONTENT

This narrative review provides an overview of key elements of diagnosis and treatment of infected pancreatic necrosis in the ICU.

IMPLICATIONS

In pancreatic necrosis it is essential to continuously (re)evaluate the indication for antimicrobial treatment and invasive source control. Invasive diagnostics (e.g. through fine-needle aspiration, FNA), preferably prior to the start of broad-spectrum antimicrobial therapy, is advocated. Antimicrobial stewardship principles apply: paying attention to altered pharmacokinetics in the critically ill, de-escalation of broad-spectrum therapy once cultures become available, and early withdrawal of antibiotics once source control has been established. This is important to prevent the development of antimicrobial resistance, especially in a group of patients who may require repeated courses of antibiotics during the prolonged course of their illness.

MR imaging for acute pancreatitis: the current status of clinical applications

Acute pancreatitis is a common clinical acute abdomen. Imaging examinations play an important role in the management of acute pancreatitis. MR imaging is a noninvasive examination with high tissue contrast and a variety of acquisition sequences that can help determine the diagnosis, complications and severity of acute pancreatitis. The acute pancreatitis classification working group modified the Atlanta classification in 2012 to improve clinical evaluations and standardize the radiologic nomenclature for acute pancreatitis. In particular, the redefinition of necrotizing pancreatitis offers a new understanding of this disease. In clinical practice, there is still a lack of unifying standards between radiologists and physicians, such as for the imaging features of pseudocysts, walled-off necrosis, peripancreatic necrosis and especially for the MR imaging features of acute pancreatitis. In this article, we review the 2012 revised Atlanta classification of acute pancreatitis and recent advances in the clinical applications of MR imaging (MRI) in acute pancreatitis by showing how MRI can provide more optimized information for clinical diagnosis and treatment plan.

Acute management of pancreatitis: the key to best outcomes

Acute pancreatitis (AP) accounts for over 230 000 US and 28 000 UK hospital admissions annually. Abdominal pain is the most common presenting symptom in AP but may not reflect severity. The clinical challenge is identifying the 20% of patients in whom AP will be severe. We summarise the common aetiologies, the risk stratification strategies including the simplified Bedside Index for Severity in Acute Pancreatitis, acute management approaches in the initial presentation setting, conditions for using advance imaging and opinions on antibiotic use. Some warning signs of impending complications are also discussed.

Endoscopic versus laparoscopic drainage of pseudocyst and walled-off necrosis following acute pancreatitis: a randomized trial

BACKGROUND

Pancreatic fluid collections (PFC) may develop following acute pancreatitis (AP). Endoscopic and laparoscopic internal drainage are accepted modalities for drainage of PFCs but have not been compared in a randomized trial. Our objective was to compare endoscopic and laparoscopic internal drainage of pseudocyst/walled-off necrosis following AP.

PATIENTS AND METHODS

Patients with symptomatic pseudocysts or walled-off necrosis suitable for laparoscopic and endoscopic transmural internal drainage were randomized to either modality in a randomized controlled trial. Endoscopic drainage comprised of per-oral transluminal cystogastrostomy. Additionally, endoscopic lavage and necrosectomy were done following a step-up approach for infected collections. Surgical laparoscopic cystogastrostomy was done for drainage, lavage, and necrosectomy. Primary outcome was resolution of PFCs by the intended modality and secondary outcome was complications.

RESULTS

Sixty patients were randomized, 30 each to laparoscopic and endoscopic drainage. Both groups were comparable for baseline characteristics. The initial success rate was 83.3% in the laparoscopic and 76.6% in the endoscopic group (p = 0.7) after the index intervention. The overall success rate of 93.3% (28/30) and 90% (27/30) in the laparoscopic and endoscopic groups respectively was also similar (p = 1.0). Two patients in the laparoscopic group required endoscopic cystogastrostomy for persistent collections. Similarly, two patients in the endoscopic group required laparoscopic drainage. Postoperative complications were comparable between the groups except for higher post-procedure infection in the endoscopic group (19 vs. 9; p = 0.01) requiring endoscopic re-intervention.

CONCLUSIONS

Endoscopic and laparoscopic techniques have similar efficacy for internal drainage of suitable pancreatic fluid collections with < 30% debris. The choice of procedure should depend on available expertise and patient preference.

Congenital Portosystemic Shunts: Current Diagnosis and Management

Congenital portosystemic shunts are increasingly recognized in several settings and at any age. The following are some of the most common presentations: prenatal ultrasound, neonatal cholestasis, incidental finding on abdominal imaging, or systemic complications such as unexplained cardiopulmonary or neurological disease, or the presence of liver nodules in a noncirrhotic liver. The purpose of the present review is to summarize clinical presentation and current recommendations for management, and highlight areas of future research. Illustrative examples from the veterinary literature complement our current lack of knowledge of this rare malformation often masquerading as a multisystem disease.

Natural course of asymptomatic walled off pancreatic necrosis

INTRODUCTION

There is paucity of data on natural course of asymptomatic walled off necrosis (WON).

OBJECTIVE

To study the natural course as well as outcome of conservative management in patients with asymptomatic WON.

METHODS

Retrospective analysis of prospectively maintained data base of patients with asymptomatic WON presenting to us 4-6 weeks after an episode of acute necrotising pancreatitis (ANP).

RESULTS

Forty three patients (37 M; mean age: 38.2 ± 10.4 years) with asymptomatic WON were studied. The size of WON ranged from 5 to 16 cm (mean 8.2 ± 2.2 cm). The site of WON was head, body and tail in 5 (11%), 34 (79%) and 4 (10%) patients respectively. Thirty of 43 patients (70%) patients did not have any complications during the expectant management period of 3 weeks-32 months with 13 (30%) patients having spontaneous resolution within 6.2 ± 3.4 months. Thirteen (30%) patients became symptomatic or developed complication within 3.2 ± 1.3 months. These were refractory pain (n = 7), infection (n = 4), spontaneous rupture into gastrointestinal tract (n = 5; stomach in 3, duodenum in 1 and colon in 1 patient respectively) and bleeding from splenic artery pseudoaneursym in 1 patient.

CONCLUSIONS

Majority of patients with asymptomatic WON have an uneventful clinical course. However, one third patients will develop symptoms/complications requiring interventional treatment.

Management of (Peri)Pancreatic Collections in Acute Pancreatitis

The development of (peri)pancreatic fluid collections are frequent local complications in acute pancreatitis. These collections are classified as early (acute peripancreatic fluid collection or acute necrotic collection) or late (walled-off necrosis or pseudocyst). The majority of pancreatic fluid collections resolve spontaneously and do not require intervention. However, infection may require intervention. Interventions may include endoscopic or percutaneous catheter drainage, or in a next step endoscopic or surgical necrosectomy, minimally invasive or open. The best timing for the first intervention is still under investigation. Whereas some use antibiotics to postpone intervention until the stage of walled-off necrosis, others drain earlier. Endoscopic drainage of (peri)pancreatic fluid collections is now the preferred approach of drainage due to reduced morbidity as compared to surgical or percutaneous drainage. However, each collection must be treated according to a tailored approach. The final treatment should take into consideration anatomic characteristics, patient preference, comorbidity profile of the patient, and physician discretion. This review summarizes the current evidence on the treatment of (peri)pancreatic fluid collections.