Low mortality following resection for pancreatic and periampullary tumours in 1026 patients: UK survey of specialist pancreatic units. UK Pancreatic Cancer Group

Postpancreatoduodenectomy Hemorrhage: Association between the Causes and the Severity of the Bleeding

INTRODUCTION

Of the complications following pancreatoduodenectomy (PD), postpancreatoduodenectomy hemorrhage (PPH) is the least common, but severe forms can be life-threatening without urgent treatment. While early PPH is mostly related to surgical hemostasis, late PPH is more likely due to complex physiopathological pathways secondary to different etiologies. The understanding of such etiologies could therefore be of great interest to help guide the treatment of severe, potentially life-threatening, late PPH cases.

OBJECTIVE

The aim of this retrospective study was to assess the causes of PPH as a complication and explore a possible association between the causes and the severity of late PPH.

METHODS

A retrospective study was performed at the HPB and Surgical Oncology Unit, Rambam Health Care Campus, Haifa, Israel. The charts of all patients submitted for PD were reviewed, and all patients with PPH were included. The timing, cause, and severity of PPH as well as other information were collected. A statistical analysis on the possible association between cause and severity of late PPH was performed.

RESULTS

A total of 347 patients underwent PD, 18 of whom (5.18%) developed PPH. Early PPH was reported in 1 patient (5.6%) with severe bleeding from the gastric staple line. Late PPH was reported in 17 patients (94.4%). The most common causes of late PPH were bleeding from a vascular pseudoaneurysm (PSA) reported in 6 patients, 1 with mild and 5 with severe hemorrhage, and bleeding from a gastroenteric anastomosis marginal ulcer reported in 6 patients, all with mild hemorrhage. No etiology was found in 5 patients with mild hemorrhage. A significant association was found between the severity of late hemorrhage and vascular PSA as the cause of the bleeding (p = 0.001). All PSA bleeding occurred in cases complicated by a postoperative pancreatic fistula (POPF), with a significant statistical association (p < 0.001).

CONCLUSIONS

The most common cause of PPH was bleeding from a vascular PSA; the majority of these cases involved severe bleeding with late presentation, and all were associated with a POPF formation. In such cases, early detection by computed tomography angiography is mandatory, thereby promoting urgent treatment by angiography of vascular bleeding complications following PD.

Deviations from a clinical pathway post pancreatoduodenectomy predict 90-day unplanned re-admission

Aim: To determine the frequency and relevance of deviations from a post pancreatoduodenectomy (PD) clinical care pathway. Materials & methods: A retrospective analysis using a prospectively maintained database of a post-PD clinical care pathway was carried out between May 2016 and March 2018. Patients were divided based on the number of factors deviating from the clinical care pathway (Group I: no deviation; Group II: deviation in 1-4 factors; Group III: deviation in 5-8 factors). The analysis included profiling of patients on different demographic and clinical as well as medical and surgical outcome parameters (discharge by postoperative day 8 and 90-day unplanned re-admission rate). Results: Post-PD clinical care pathways are feasible but deviations from the pathway are frequent (91%). An increase in frequency of deviations from the pathway was significantly associated with increased risk of POPF and delayed gastric emptying, delayed discharge, risk of mortality and 90-day unplanned re-admission rate. Conclusion: Deviations from a post-PD clinical care pathway are common. Poor nutrition and cardiac co-morbidities are associated with an increased likelihood of deviation. As the number of deviations increase, so does the risk of significant complications and interventions, delayed discharge and 90-day re-admission rate.

Clinical Impact of Preoperative Cholangitis after Biliary Drainage in Patients who Undergo Pancreaticoduodenectomy on Postoperative Pancreatic Fistula

The objective of this study was to examine whether the development of cholangitis after preoperative biliary drainage (PBD) can increase the incidence of postoperative pancreatic fistula (POPF). The study population included 185 consecutive patients who underwent pancreaticoduodenectomy from April 2006 to March 2011. All patients were divided into two groups, which consisted of a “no PBD” group (73 patients) and a PBD group (112 patients). Moreover, the PBD group was divided into a “cholangitis” group (21 patients) and a “no cholangitis” group (91 patients). Clinical background, clinical outcome, and postoperative complications were compared between groups. All patients received prophylactic antibiotics using cefmetazole until 1 or 2 days postoperatively. There was no difference between noncholangitis and non-PBD groups except the frequency of overall POPF. Clinically relevant POPF and drain infection occurred in the cholangitis group significantly more than in the noncholangitis group ( P < 0.05). Univariate and multivariate analyses showed that development of preoperative cholangitis after preoperative biliary drainage and small pancreatic duct (less than 3 mm diameter) were independent risk factors for clinically relevant POPF. The frequency of clinically relevant POPF was 8 per cent (eight of 99) in patients without two risk factors, 19 per cent (15 of 80) in patients with one risk factor, and 50 per cent (three of six) in patients with both risk factors. The development of preoperative cholangitis after PBD was closely associated with the development of clinically relevant POPF under the limited use of prophylactic antibiotics.

A Novel Way of Preventing Postoperative Pancreatic Fistula by Directly Injecting Profibrogenic Materials into the Pancreatic Parenchyma

This paper aims to validate if intrapancreatic injection of penicillin G can enhance hardness and suture holding capacity (SHC) of the pancreas through prompting the fibrosis process. Soft pancreatic texture is constantly mentioned as one of the most contributory predictors of postoperative pancreatic fistula (POPF). Soft pancreas has poor SHC and higher incidence of parenchymal tearing, frequently leading to POPF. From a library of 114 antibiotic compounds, we identified that penicillin G substantially enhanced pancreatic hardness and SHC in experimental mice. Specifically, we injected penicillin G directly into the pancreas. On determined dates, we measured the pancreatic hardness and SHC, respectively, and performed molecular and histological examinations for estimation of the degree of fibrosis. The intrapancreatic injection of penicillin G activated human pancreatic stellate cells (HPSCs) to produce various fibrotic materials such as transforming growth factor-β1 (TGF-β1) and metalloproteinases-2. The pancreatic hardness and SHC were increased to the maximum at the second day after injection and then it gradually subsided demonstrating its reversibility. Pretreatment of mice with SB431542, an inhibitor of the TGF-β1 receptor, before injecting penicillin G intrapancreatically, significantly abrogated the increase of both pancreatic hardness and SHC caused by penicillin G. This suggested that penicillin G promotes pancreatic fibrosis through the TGF-β1 signaling pathway. Intrapancreatic injection of penicillin G promotes pancreatic hardness and SHC by enhancing pancreatic fibrosis. We thus think that penicillin G could be utilized to prevent and minimize POPF, after validating its actual effectiveness and safety by further studies.

Ninety day mortality following pancreatoduodenectomy in England: has the optimum centre volume been identified?

BACKGROUND

Mortality following pancreatoduodenectomy is related to centre volume although the optimal volume is not defined.

METHODS

Patients undergoing PD between 2001 and 2016 were identified from UK national databases. The effects of patient variables, centre volume and time period upon 90 day mortality were studied.

RESULTS

90 day mortality (970/14,935, 6.5%) was related to advanced age, comorbidity, diagnosis, ethnicity, deprivation, centre volume and time period. Mortality rates fell markedly from 10.0% in 2001-4 to 4.1% in 2013-16. There was no difference in 90 day mortality between high (36 -60 PD per year) and very high volume (>60) centres. However, patients operated upon at very high volume centres were more elderly (66, 58 -73 vs 65, 56 -72; median, IQR; p = 0.006), deprived (38.7 vs 34.6%; p < 0.001) and co morbid (48.9 vs 46.1%; p = 0.027).

CONCLUSION

Although a plateau in the centre volume and mortality relationship appears to have been demonstrated those patients treated at the highest volume centres were at higher risk of mortality. This data suggests therefore that to further understand outcomes from specialist centres characteristics of the patient population should be defined, not just centre volume.

Pancreaticoduodenectomy for periampullary tumours: a review article based on Surveillance, End Results and Epidemiology (SEER) database

INTRODUCTION

This study set to examine relative survival of patients with periampullary cancers undergoing pancreaticoduodenectomy (PD).

METHODS

Using the Surveillance, End Results and Epidemiology (SEER) database, this study identified 9877 patients with non-metastatic pancreatic adenocarcinoma who underwent PD between 2004 and 2013.

RESULTS

Ampullary carcinomas have the best survival among periampullary malignancies. Lymph node ratio is a significant prognostic factor, even when stratified by tumour types. Patients receiving adjuvant radiotherapy following PD have superior survival than patients without radiotherapy (median 25 vs 20 months, p < 0.001), particularly ductal adenocarcinoma (HR: 0.74, CI_95% 0.69-0.78; p < 0.001), cholangiocarcinoma (HR: 0.75, CI_95% 0.59-0.97; p = 0.027), and ampullary carcinoma (HR: 0.79, CI_95% 0.64-0.98; p = 0.029) with greatest survival benefit at 1-year postresection.

CONCLUSION

Future studies aiming to further define genetic signatures of individual periampullary cancers would allow a personalised therapeutic approach in improving survival.

Extensive lymph node dissection during pancreaticoduodenectomy: a risk factor for hepatic steatosis?

PURPOSE

The first reports of hepatic steatosis following pancreaticoduodenectomy (PD) were published several years ago; however, clear risk factors remain to be identified. Therefore, the aim of this study was to identify the risk factors for hepatic steatosis post-PD.

METHODS

We studied 90 patients who had undergone PD between September 2005 and January 2015. The inclusion criteria were as follows: available unenhanced CT within one month before PD and at least one unenhanced CT acquisition between PD and chemotherapy initiation. Using scanners, we studied the liver and spleen density as well as the surface areas of visceral (VF) and subcutaneous fat (SCF). These variables were previously identified by univariate and multivariate analyses.

RESULTS

Hepatic steatosis occurred in 25.6% of patients at 45.2 days, on average, post-PD. Among the patients with hepatic steatosis, the average liver density was 52 HU before PD and 15.1 HU post-PD (p < 0.001). The Patients with hepatic steatosis lost more VF (mean, 28 vs. 11 cm²) and SCF (28.8 vs. 13.7 cm²) (p < 0.01 and p = 0.01, respectively). Portal vein resection and extensive lymph node dissection were independent risk factors in the multivariate analysis (odds ratio [OR] 5.29, p = 0.009; OR 3.38, p = 0.04, respectively).

CONCLUSION

Portal vein resection and extensive lymph node dissection are independent risk factors for post-PD hepatic steatosis.

Maximum surgical blood order schedule for pancreatoduodenectomy: a long way from uniform applicability!

BACKGROUND

Unnecessary preoperative ordering of blood and blood products results in wastage of a valuable life-saving resource and poses a significant financial burden on healthcare systems.

AIM

To determine patient-specific factors associated with intra-operative transfusions, and if intra-operative blood transfusions impact postoperative morbidity.

PATIENTS & METHODS

Analysis of consecutive patients undergoing pancreatoduodenectomy (PD) for pancreatic tumors.

RESULTS

A total of 384 patients underwent a classical PD with an estimated median blood loss of 200 cc and percentage transfused being 9.6%. Pre-existing hypertension, synchronous vascular resection, end-to-side pancreaticojejunostomy and nodal disease burden significantly associated with the need for intra-operative transfusions. Intra-operative blood transfusion not associated with postoperative morbidity.

CONCLUSION

Optimization of MSBOS protocols for PD is required for more judicious use of blood products.

Advanced pancreatic adenocarcinoma outcomes with transition from devolved to centralised care in a regional Cancer Centre

Background:

Previous observations suggest suboptimal ‘real world' survival outcomes for advanced pancreatic adenocarcinoma. We hypothesized that centralisation of advanced pancreatic adenocarcinoma management would improve chemotherapy treatment and survival from the disease.

Methods:

The data was prospectively collected on all cases of advanced pancreatic adenocarcinoma reviewed through Clatterbridge Cancer Centre according to two groups; 1 October 2009–31st Dec 2010 (devolved care) or 1 January 2013–31 March 2014 (centralised care). Analysis included treatment received, 30-day chemotherapy mortality rate and overall survival (OS).

Results:

More patients received chemotherapy with central care (67.0% (n=115) vs 43.0% (n=121); P=2.2 × 10⁻⁴) with no difference in 30-day mortality (20.8% vs 25% P=0.573) but reduced time to commencement of chemotherapy (18 vs 28 days, P=1.0 × 10⁻³). More patients received second-line chemotherapy with central care (23.4% vs 1.9%, P=1.4 × 10⁻⁴), while OS was significantly increased with central care (median: Five vs three months, HR 0.785, P=0.045). Exploratory analysis suggested that it was those with a poorer performance status, elderly or with metastatic disease who benefited the most from transition to central care.

Conclusions:

A centralised clinic model for advanced pancreatic cancer management resulted in prompt, safe and higher use of chemotherapy compared with devolved care. This was associated with a modest survival benefit. Prospective studies are required to validate the findings reported and the basis for improved survival with centralised care.

Stents for the prevention of pancreatic fistula following pancreaticoduodenectomy

BACKGROUND

Several studies have demonstrated that the use of pancreatic duct stents following pancreaticoduodenectomy is associated with a lower risk of pancreatic fistula. However, to date there is a lack of accord in the literature on whether the use of stents is beneficial and, if so, whether internal or external stenting, with or without replacement, is preferable. This is an update of a systematic review.

OBJECTIVES

To determine the efficacy of pancreatic stents in preventing pancreatic fistula after pancreaticoduodenectomy.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, Web of Science, and four major Chinese biomedical databases up to November 2015. We also searched several major trials registers.

SELECTION CRITERIA

Randomized controlled trials (RCTs) comparing the use of stents (either internal or external) versus no stents, and comparing internal stents versus external stents, replacement versus no replacement following pancreaticoduodenectomy.

DATA COLLECTION AND ANALYSIS

Two review authors independently extracted the data. The outcomes studied were incidence of pancreatic fistula, need for reoperation, length of hospital stay, overall complications, and in-hospital mortality. We showed the results as risk ratio (RR) or mean difference (MD), with 95% confidence interval (CI). We assessed the quality of evidence using GRADE (http://www.gradeworkinggroup.org/).

MAIN RESULTS

We included eight studies (1018 participants). The average age of the participants ranged from 56 to 68 years. Most of the studies were conducted in single centers in Japan (four studies), China (two studies), France (one study), and the USA (one study). The risk of bias was low or unclear for most domains across the studies. Stents versus no stentsThe effect of stents on reducing pancreatic fistula in people undergoing pancreaticoduodenectomy was uncertain due to the low quality of the evidence (RR 0.67, 95% CI 0.39 to 1.14; 605 participants; 4 studies). The risk of in-hospital mortality was 3% in people who did receive stents compared with 2% (95% CI 1% to 6%) in people who had stents (RR 0.73, 0.28 to 1.94; 605 participants; 4 studies; moderate-quality evidence). The effect of stents on reoperation was uncertain due to wide confidence intervals (RR 0.67, 0.36 to 1.22; 512 participants; 3 studies; moderate-quality evidence). We found moderate-quality evidence that using stents reduces total hospital stay by just under four days (mean difference (MD) -3.68, 95% CI -6.52 to -0.84; 605 participants; 4 studies). The risk of delayed gastric emptying, wound infection, and intra-abdominal abscess was uncertain (gastric emptying: RR 0.75, 95% CI 0.24 to 2.35; moderate-quality evidence) (wound infection: RR 0.73, 95% CI 0.40 to 1.32; moderate-quality evidence) (abscess: RR 1.38, 0.49 to 3.85; low-quality evidence). Subgroup analysis by type of stent provided limited evidence that external stents lead to lower risk of fistula compared with internal stents. External versus internal stentsThe effect of external stents on the risk of pancreatic fistula, reoperation, delayed gastric emptying, and intra-abdominal abscess compared with internal stents was uncertain due to low-quality evidence (fistula: RR 1.44, 0.94 to 2.21; 362 participants; 3 studies) (reoperation: RR 2.02, 95% CI 0.38 to 10.79; 319 participants; 3 studies) (gastric emptying: RR 1.65, 0.66 to 4.09; 362 participants; 3 studies) (abscess: RR 1.91, 95% CI 0.80 to 4.58; 362 participants; 3 studies). The rate of in-hospital mortality was lower in studies comparing internal and external stents than in those comparing stents with no stents. One death occurred in the external-stent group (RR 0.33, 0.01 to 7.99; low-quality evidence). There were no cases of pancreatitis in participants who had internal stents compared with three in those who had external stents (RR 0.15, 0.01 to 2.73; low-quality evidence). The difference between internal and external stents on total hospital stay was uncertain due to the wide confidence intervals around the average effect of 1.7 days fewer with internal stents (9.18 days fewer to 5.84 days longer; 262 participants; 2 studies; low-quality evidence). The analysis of wound infection could not exclude a protective effect with either approach (RR 1.41, 0.44 to 4.48; 319 participants; 2 studies; moderate-quality evidence). Operative replacement of pancreatic juice versus not replacing pancreatic juice There was insufficient evidence available from a small trial to ascertain the effect of replacing pancreatic juice.

AUTHORS' CONCLUSIONS

This systematic review has identified limited evidence on the effects of stents. We have not been able to identify convincing direct evidence of superiority of external over internal stents. We found a limited number of RCTs with small sample sizes. Further RCTs on the use of stents after pancreaticoduodenectomy are warranted.

Pancreaticoduodenectomy for adenocarcinoma of the pancreatic head is justified in elderly patients: A Retrospective Cohort Study

BACKGROUND

The increasing elderly population is an inevitable trend worldwide in developed countries. Therefore, we aimed to assess the experience of a tertiary pancreatic center with a very homogenous population comprising only patients diagnosed with PDAC of the pancreatic head in patients older than 75 years of age compared to their younger counterparts regarding the benefit in life expectancy and tumor biological aggressiveness.

METHODS

300 patients underwent partial pancreaticoduodenectomy (PD) or pylorus preserving pancreaticoduodenectomy (PPPD) for PDAC of the pancreatic head between 2002 and 2012 and were evaluated with regard to their co-morbidities, clinicopathological and perioperative variables, postoperative morbidity, mortality and long term survival. Therefore, two groups according to the age at the procedure (A: <75 years, n = 241, B: ≥75 years, n = 59) were designed.

RESULTS

There were no differences between groups with regard to gender, performed procedure (PPPD or PD), operation time, blood loss, tumor invasiveness and grade of tumor differentiation, R-status, lymph node ratio, 30-day mortality, length of stay and adjuvant chemotherapy. Extended resections including total pancreatectomy were slightly more often performed in younger patients (p = 0.071) and trended toward a higher rate of surgical complications in patients <75 years of age (p = 0.183). A higher rate of preoperative co-morbidities in elderly patients (group B), was associated with more postoperative non-surgical complications (p = 0.002) in this group of patients. However, the median overall survival (19.2 vs. 18.4 months) did not differ significantly between groups.

CONCLUSIONS

Major pancreatic surgery for ductal adenocarcinoma of the pancreatic head is justified in elderly patients. With careful patients' selection and prudent perioperative management, elderly patients will have a similar long term outcome despite the higher rate of postoperative morbidity based on non-surgical complications.

Mesenteric-Portal Vein Resection during Pancreatectomy for Pancreatic Cancer

The aim of the present study was to determine the outcome of patients undergoing pancreatic resection with (VR+) or without (VR-) mesenteric-portal vein resection for pancreatic carcinoma. Between January 1998 and December 2012, 241 patients with pancreatic cancer underwent pancreatic resection: in 64 patients, surgery included venous resection for macroscopic invasion of mesenteric-portal vein axis. Morbidity and mortality did not differ between the two groups (VR+: 29% and 3%; VR-: 30% and 4.0%, resp.). Radical resection was achieved in 55/64 (78%) in the VR+ group and in 126/177 (71%) in the VR- group. Vascular invasion was histologically proven in 44 (69%) of the VR+ group. Survival curves were not statistically different between the two groups. Mean and median survival time were 26 and 15 months, respectively, in VR- versus 20 and 14 months, respectively, in VR+ group (p = 0.52). In the VR+ group, only histologically proven vascular invasion significantly impacted survival (p = 0.02), while, in the VR- group, R0 resection (p = 0.001) and tumor's grading (p = 0.01) significantly influenced long-term survival. Vascular resection during pancreatectomy can be performed safely, with acceptable morbidity and mortality. Long-term survival was the same, with or without venous resection. Survival was worse for patients with histologically confirmed vascular infiltration.

Pancreatic Fistula and Delayed Gastric Emptying After Pancreatectomy: Where do We Stand?

Pancreatic resection has become a feasible treatment of pancreatic neoplasms, and with improvements in surgical techniques and perioperative management, mortality associated with pancreatic surgery has decreased considerably. Despite this improvement, a high rate of complications is still associated with these procedures. Among these complications, delayed gastric emptying (DGE) and postoperative pancreatic fistula (POPF) have a substantial impact on patient outcomes and burden our healthcare system. Technical modifications and postoperative approaches have been proposed to reduce rates of both POPF and DGE in patients undergoing pancreatectomy; however, to date, their rates have remained unchanged. In the present study, we summarize the findings of the most significant studies that have investigated these complications. In particular, several studies focused on technical modifications including extent of dissection, stent placement, nature of anastomosis, type of reconstruction, and application of biological or non-biological agents to site of anastomosis. Moreover, postoperatively, drain placement, duration of drain usage, postoperative feeding, and use of pharmacological agents were studied to reduce rates of POPF and DGE. In this review, we summarize the most relevant literature on this fundamental aspect of pancreatic surgery. Despite studies identifying the potential benefit of technical modifications and postoperative approaches, these findings remain controversial and suggest need for further extensive investigation. Most importantly, we recommend that all surgeons performing these procedures base their practice on the most updated and highest available level of evidence.

Can early serum lipase measurement be routinely implemented to rule out clinically significant pancreatic fistula after pancreaticoduodenectomy?

INTRODUCTION

Postoperative pancreatic fistula (POPF) is the most significant cause of morbidity and mortality after pancreaticoduodenectomy (PD). We evaluated the role of postoperative serum lipase concentration in ruling out POPF in the immediate post-operative period.

MATERIALS AND METHODS

We retrospectively analysed 98 consecutive PD performed between January 2009 and December 2014, investigating the correlation between postoperative day 1 (POD1) serum lipase concentration and POPF development.

RESULTS

29 patients (29.5%) developed POPF [grade A, 17 (17.3%); grade B, 8 (8.1%); grade C, 4 (4%)]. A receiver operating characteristic (ROC) analysis was conducted to determine the threshold value of POD1 serum lipase associated with clinically significant POPF (AUC = 0.76, 95% CI 0.64-0.86, P = 0.01). Such threshold was ≤ 44.5 U/L and its sensitivity and specificity were 92% and 66%, respectively. The positive and negative predictive values (PPV, NPV) were 31% and 98%, respectively.

CONCLUSION

Early routinely measurement of serum lipase proved to be helpful in ruling out clinically relevant POPF (CR-POPF). In our cohort, a POD1 cut-off of ≤ 44.5 U/L allowed early and accurate identification of patients with low probability to develop clinically significant POPF, who can eventually be selected for enhanced post-operative recovery with significant clinical and economic benefits.

Peripancreatic soft tissue involvement: independent outcome predictor in patients with resected pancreatic adenocarcinoma

The impact of cancer involving the peripancreatic soft tissue (PST), irrespective of margin status, following a resection of pancreatic adenocarcinoma is not known. The purpose of this study is to determine such an impact on a cohort of patients. Data from 274 patients who underwent pancreatic surgery by our team between 1998 and 2012 was reviewed. Of those 119 patients who had pancreatic resection for adenocarcinoma were retrospectively analyzed. Patients were categorized into 3 groups: Group 1 = R1 resection (N = 39), Group 2 = R0 with involved PST (N = 54), and Group 3 = R0 with uninvolved PST (N = 26). Demographics, operative data, tumor characteristics and overall survival (OS) were evaluated. Operations performed were: Whipple (N = 53), pylorus sparing Whipple (N = 41), total pancreatectomy (N = 11), and other (N = 14). Median OS for Groups 1, 2, and 3 were 8.5 months, 12 months, and 69.6 months respectively (P < 0.001). Tumor size (P = 0.016), margin status (P = 0.006), grade (P = 0.001), stage (P = 0.037), PST status (P < 0.001), complications (P = 0.046), transfusion history (P = 0.003) were all predictors of survival. Cox regression analysis demonstrated that grade (HR = 3.1), PST involvement (HR = 2.7), transfusion requirement (HR = 2.6) and margin status (HR = 2.0) were the only independent predictors of mortality. PST is a novel predictor of poor outcome for patients with resected pancreatic cancer.

Retrospective analyses of trends in pancreatic surgery: indications, operative techniques, and postoperative outcome of 1,120 pancreatic resections

Background

Hospital volume, surgeons’ experience, and adequate management of complications are factors that contribute to a better outcome after pancreatic resections. The aim of our study was to analyze trends in indications, surgical techniques, and postoperative outcome in more than 1,100 pancreatic resections.

Methods

One thousand one hundred twenty pancreatic resections were performed since 1994. The vast majority of operations were performed by three surgeons. Perioperative data were documented in a pancreatic database. For the purpose of our analysis, the study period was sub-classified into three periods (A 1994 to 2001/n = 363; B 2001 to 2006/n = 305; C since 2007 to 2012/n = 452).

Results

The median patient age increased from 51 (A) to 65 years (C; P < 0.001). Indications for surgery were pancreatic/periampullary cancer (49%), chronic pancreatitis (CP; 33%), and various other lesions (18%). About two thirds of the operations were pylorus-preserving pancreaticoduodenectomies. The frequency of mesenterico-portal vein resections increased from 8% (A) to 20% (C; P < 0.01). The overall mortality was 2.4% and comparable in all three periods (2.8%, 2.0%, 2.4%; P = 0.8). Overall complication rates increased from 42% (A) to 56% (C; P < 0.01).

Conclusions

Mortality remained low despite a more aggressive surgical approach to pancreatic disease. An increased overall morbidity may be explained by more clinically relevant pancreatic fistulas and better documentation.

Pancreatoduodenectomy - preventing complications

Increased awareness of periampullary & pancreatic head cancers, and the accompanying improved outcomes following pancreatoduodenectomy (PD), has possibly led to an increase in patients seeking treatment for the same. While there has definitely been a reduction in morbidity rates following PD in the last few decades, this decline has not mirrored the drastic fall in mortality. Amongst the foremost in the factors responsible for this reduction in mortality is the standardization of surgical technique and development of dedicated teams to manage all aspects of this demanding procedure. This review intends to provide the reader with an overview of major complications following this major surgery and measures to prevent them based on the authors' experience.

Reconstruction after pancreatoduodenectomy: Pancreatojejunostomy vs pancreatogastrostomy

Pancreatic surgeons try to find the best technique for reconstruction after pancreatoduodenectomy (PD) in order to decrease postoperative complications, mainly pancreatic fistulas (PF). In this work, we compare the two most frequent techniques of reconstruction after PD, pancreatojejunostomy (PJ) and pancreatogastrostomy (PG), in order to determine which of the two is better. A systematic review of the literature was performed, including major meta-analysis articles, clinical randomized trials, systematic reviews, and retrospective studies. A total of 64 articles were finally included. PJ and PG are usually responsible for most of the postoperative morbidity, mainly due to the onset of PF, being considered a major trigger of life-threatening complications such as intra-abdominal abscess and hemorrhagia. The included systematic reviews reported a significant difference only in the incidence of intraabdominal collections favouring PG. PF, delayed gastric emptying and mortality were not different. Although there was heterogeneity between these studies, all were conducted in specialized centers by highly experienced surgeons, and the surgical care was likely to be similar for all the studies. The disadvantages of PG include an increased incidence of delayed gastric emptying and of main pancreatic duct obstruction due to overgrowth by the gastric mucosa. Exocrine function appears to be worse after PG than after PJ, resulting in severe atrophic changes in the remnant pancreas. Depending on the type of PJ or PG used, the PF rate and other complications can also be different. The best method to deal with the pancreatic stump after PD remains questionable. The choice of method of pancreatic anastomosis could be based on individual experience and on the surgeon’s preference and adherence to basic principles such as good exposure and visualization. In conclusion, up to now none of the techniques can be considered superior or be recommended as standard for reconstruction after PD.

Feasibility of implementing fast-track surgery in pancreaticoduodenectomy with pancreaticogastrostomy for reconstruction--a prospective cohort study with historical control

INTRODUCTION

Fast track programmes have been introduced in pancreatic surgery, but the data are sparse. The aim of this prospective study was to analyse the feasibility of implementing fast track rehabilitation protocol in PD with pancreaticogastrostomy, using historical control for comparison.

MATERIALS AND METHODS

Between April 2012 and December 2012, twenty patients who underwent PD (with pancreaticogastrostomy) were managed by a fast-track rehabilitation protocol. These patients were compared with an equal number of historical controls treated according to the traditional protocol.

RESULTS

Patients in the fast track group were able to tolerate liquid (p = 0.0005) and solid diet (p = 0.0001) earlier, and they passed stools earlier (p = 0.02). Delayed gastric emptying (DGE) was significantly reduced in the fast track group (p = 0.02). There was no difference in the rates of pancreatic fistula (PF), post pancreatectomy haemorrhage (PPH) and mortality between the two groups. Length of hospital stay was reduced in the fast track group (median 14 vs 18.5, p = 0.007).

CONCLUSION

Fast track programme appears to be feasible in PD, even with pancreatico-gastric anastomosis. It is associated with early recovery, reduced DGE and reduced hospital stay.

Enteric reconstruction of pancreatic stump following pancreaticoduodenectomy: a review of the literature

Techniques for reconstruction of pancreatic stump with gastrointestinal tract following pancreaticoduodenectomy are closely related to postoperative complications, mortality and quality of life. In order to reduce postoperative complications, particularly pancreatic fistula, many modifications and new surgical techniques have been proposed to replace the traditional pancreaticojejunostomy and pancreaticogastrostomy. The objective of this review, based on large prospective randomized trials and meta-analyses, is to evaluate the different techniques of enteric reconstruction of pancreatic stump following pancreaticoduodenectomy, including: invagination pancreaticojejunostomy, binding pancreaticojejunostomy, duct-to-mucosa pancreaticojejunostomy, Roux-en-Y pancreaticojejunostomy, and pancreaticogastrostomy, so as to provide a comprehensive comparison of these techniques and to assess of their roles and effectiveness.

Impact of cardiac comorbidity on early outcomes after pancreatic resection

BACKGROUND

In patients undergoing pancreatic resection (PR), identification of subgroups at increased risk for postoperative complications can allow focused interventions that may improve outcomes.

STUDY DESIGN

Patients undergoing PR from 2005-2010 were selected from the American College of Surgeons National Surgical Quality Improvement Program database and categorized as having any history of cardiac disease (angina, congestive heart failure (CHF), myocardial infarction (MI), cardiac stent, or bypass) or as having acute cardiac disease (symptoms of CHF or angina within 30 days or MI within 6 months). These variables were utilized to examine the relationship between cardiac disease and outcomes after PR.

RESULTS

The rate of serious complications and perioperative mortality in patients with any history of cardiac disease vs. those without was 34 vs. 24 % (p < 0.001) and 4.5 vs. 2.0 % (p < 0.001), respectively, and in patients with acute cardiac disease compared to patients without was 37 vs. 25 % (p < 0.001) and 8.6 vs. 2.2 % (p < 0.001), respectively. In multivariate analysis, the two cardiac disease variables remained associated with mortality.

CONCLUSIONS

In patients undergoing PR, cardiac disease is a significant risk factor for adverse outcomes. These observations are critical for meaningful informed consent in patients considering pancreatectomy.

Preventing Delayed Gastric Emptying After Whipple's Procedure-Isolated Roux Loop Reconstruction With Pancreaticogastrostomy

Although delayed gastric emptying (DGE) after Whipple's pancreaticoduodenectomy is not life-threatening and can be treated conservatively, it results in discomfort and significant prolongation of the hospital stay and adds on to the hospital costs. To overcome this problem, we started using the isolated loop technique of reconstruction along with pancreaticogastrostomy and we present our series using this technique. All consecutive patients undergoing Whipple's pancreaticoduodenectomy in a single surgical unit from January 2009 until December 2012 were included. In the absence of hepatic and peritoneal metastasis, resection (Whipple's procedure) with curative intent was done using isolated loop technique with pancreaticogastrostomy. Delayed gastric emptying was assessed clinically and on oral gastrograffin study. Bile reflux was also assessed on clinical parameters and evidence of beefy friable gastric mucosa on upper GI endoscopy and presence of reflux on hepatobiliary scintigraphy. A total of 52 patients were operated using this technique from January 2009 to October 2012. The mean operative time was 260.8 ± 50.3, and the mean operative blood loss was 1,068.0 ± 606.1 ml. Mean gastric emptying time 106.0 ± 6.1 min (89-258 min). Three out of the 52(5.7 %) patients had persistent vomiting in the post-operative period requiring reinsertion of NG tube. A HIDA scan done on POD7 for all patients did not show any evidence of bile reflux in any of the patients. Pancreatogastrostomy with isolated loop in pancreaticoduodenal resection markedly reduces the post-operative incidence of alkaline reflux gastritis and DGE.

The clinical role of critical pathway implementation for pancreaticoduodenectomy in 179 patients

BACKGROUND/PURPOSE

In June 2004, a critical pathway for patients undergoing pancreaticoduodenectomy (PD) was introduced. The objective of this study was to determine the clinical value of critical pathway implementation.

METHODS

256 consecutive patients who underwent PD between 2000 and 2010 were divided into 4 groups by date of operation as follows; group A (n = 77), the pre-pathway group; group B (n = 51), the CP implementation group who were managed according to departmental guidelines; group C (n = 78), the group who had no stenting in the reconstruction of PD; and group D (n = 50), the group who had reinforcement of the pancreaticojejunostomy. The success rates of clinical outcomes and post-operative morbidity were compared between each group, year by year and every 50 patients.

RESULTS

The success rates of clinical outcomes, including the timings of nasogastric tube removal, discontinuation of prophylactic anti-microbial agent, drain removal, starting oral intake, and patient discharge, were significantly improved in group B relative to group A, and in group C relative to group B. There were no significant differences in mortality and morbidity between any of the groups. All clinical outcomes reached a plateau at 2-3 years or 100-150 patients' operations after critical pathway implementation.

CONCLUSIONS

Long-term use of a critical pathway is associated with improved clinical outcomes. A certain period of time or volume of patients is needed for this improvement in clinical outcomes to reach a plateau, which indicates achieving standardization of peri-operative management.

Stents for the prevention of pancreatic fistula following pancreaticoduodenectomy

BACKGROUND

Several studies have demonstrated that the use of pancreatic duct stents following pancreaticoduodenectomy is associated with a lower risk of pancreatic fistula. However, to date, there is a lack of accord in the literature on whether the use of stents is beneficial and, if so, whether internal or external stenting is preferable.

OBJECTIVES

To determine the efficacy of pancreatic stents in preventing pancreatic fistula after pancreaticoduodenectomy.

SEARCH METHODS

The Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, ISI Web of Science and four major Chinese biomedical databases were searched up to February 2011. We also searched four major trials registers.

SELECTION CRITERIA

Randomized controlled trials (RCTs) comparing the use of stents (either internal or external) versus no stents, and comparing internal stents versus external stents following pancreaticoduodenectomy.

DATA COLLECTION AND ANALYSIS

Two authors extracted the data independently. The outcomes studied were incidence of pancreatic fistula, need for reoperation, length of hospital stay, overall complications, and in-hospital mortality. The results were shown as relative risk (RR) with 95% confidence interval (CI).

MAIN RESULTS

A total of 656 patients were included in the systematic review. Overall, the use of stents (both external and internal) was not associated with a statistically significant change in any of the studied outcomes. In a subgroup analysis, it was found that the use of external, but not internal, stents is associated with a significant reduction in the incidence of pancreatic fistulae (RR 0.33; 95% CI 0.11 to 0.98, P = 0.04), the incidence of complications (RR 0.48; 95% CI 0.25 to 0.92, P = 0.03) and length of hospital stay (RR -0.57; 95% CI -0.94 to -0.21, P = 0.002). In RCTs on the use of internal versus external stents, no statistically significant difference was found in terms of any of the studied outcomes.

AUTHORS' CONCLUSIONS

This systematic review suggests that the use of external stents following pancreaticoduodenectomy may be beneficial. However, only a limited number of RCTs with rather small sample sizes were available. Further RCTs on the use of stents after pancreaticoduodenectomy are warranted.

Endoscopic resection of ampullary lesions: a single-center 8-year retrospective cohort study of 91 patients with long-term follow-up

BACKGROUND

Endoscopic ampullectomy is established as a valuable treatment for adenomas of the Vaterian papilla. Few large series are available, however, let alone any with long-term follow-up. Moreover, multiple tangible issues remain. The aim of our study was to evaluate efficacy, safety, and outcome of endoscopic ampullectomy and compare it to existing literature

METHODS

This is a single-center, retrospective study with a minimal follow-up of 3 years including 91 patients, including familial adenomatous polyposis (FAP) and non-FAP, who had an endoscopic ampullectomy between 2000 and 2008. Outcome parameters included ampulloma characteristics, biotical accuracy as well as safety, efficacy, recurrence rate, and survival after endoscopic ampullectomy.

RESULTS

Endoscopic resection was successful in 71 patients (78%). Histological review of the resected specimens revealed nonspecific changes (13.8%), low or medium grade dysplasia (52.9%), high grade dysplasia (21.8%) and carcinoma (18.3%). Bioptic accuracy was 38.3%. Overall complications were observed in 23 patients (25.2%): pancreatitis (15.4%), hemorrhage (12.1%) and cholangitis (4.9%). Recurrence occurred in 18.3%. Fourteen patients underwent pancreaticoduodenectomy. Survival after complete endoscopic ampullectomy was excellent for patients with low to moderate grade dysplasia and high grade dysplasia. Incomplete endoscopic resection of high grade dysplasia or invasive carcinoma was associated with unfavorable outcome when treated merely endoscopically.

CONCLUSIONS

Endoscopic ampullectomy is obligatory for assessment of the true histological nature of an ampulloma. Endoscopic resection is a safe and efficient procedure for adenomas with low to moderate dysplasia but also for high grade dysplastic lesions, provided that a complete endoscopic resection is achieved.

Surgical outcomes of pancreaticoduodenectomy for periampullary tumors in elderly patients

BACKGROUNDS

Pancreaticoduodenectomy (PD) is an aggressive surgery with considerable operative risks, but offers the only chance for cure in patients with periampullary tumors. A growing number of elderly patients are being offered PD because of the aging of populations in developed countries. We examined surgical outcomes of PD in patients aged 75 years and older (≥75 years).

METHODS

A retrospective cohort study was performed in 65 consecutive patients who underwent PD for periampullary tumors at a single medical center during the 5 years from 2006 to 2010. We analyzed surgical outcomes such as mortality and morbidity after PD in patients aged ≥75 years (n = 21) compared to those in patients aged <75 years (n = 44).

RESULTS

The positive rate of comorbidities such as hypertension was significantly higher in patients aged ≥75 years than in patients aged <75 years (76 vs. 48 %; p = 0.03). The incidence of wound infection was significantly higher in patients aged ≥75 years than in patients aged <75 years (19 vs. 0 %; p < 0.01). However, there was no significant difference in the mortality rate (0 vs. 2 %; p = 0.49) or the overall morbidity rate (33 vs. 32 %; p = 0.90). There was no significant difference in changes in body weight or serum albumin levels during the 3 months after PD between the two groups, but the recovery of serum prealbumin levels from 1 to 3 months after PD in patients aged ≥75 years was significantly delayed compared to that in patients aged <75 years (p = 0.04). There was no statistically significant difference in long-term survival between the two groups.

CONCLUSIONS

Advanced age alone should not discourage surgeons from offering PD, although nutritional supports after PD for elderly patients aged ≥75 years are needed.

A dual-institution randomized controlled trial of remnant closure after distal pancreatectomy: does the addition of a falciform patch and fibrin glue improve outcomes?

OBJECTIVE

The objective of the study was to assess the efficacy of two pancreatic remnant closure techniques following distal pancreatectomy: (1) stapled or sutured closure versus (2) stapled or sutured closure plus falciform patch and fibrin glue reinforcement in the setting of a prospective randomized trial, with the primary endpoint being pancreatic fistula. Pancreatic stump leak following left-sided pancreatic resection (distal pancreatectomy) remains common. Despite multiple and varied techniques for closure, the reported leak rate varies up to 30 %. A retrospective analysis by Iannitti et al. (J Am Coll Surg 203(6):857-864, 2006) detected a decreased leak rate in patients receiving a traditional closure buttressed with an autologous falciform ligament patch and fibrin glue.

METHODS

Between April 2008 and October 2011, all willing patients scheduled to undergo distal pancreatectomy at the authors' institutions were consented and enrolled at the preoperative office visit. Patients were intraoperatively stratified as having hard or soft glands and randomized to one of two groups: (1) closure utilizing stapling or suturing (SS) versus (2) stapled or sutured plus falciform ligament patch and fibrin glue (FF). The trial design and power analysis (α = 0.05, β = 0.2, power 80 %, chi-square test) hypothesized that the FF intervention would reduce the primary endpoint (pancreatic fistula) from 30 % to 15 % and targeted an accrual goal of 190 patients. Secondary endpoints included length of postoperative hospital stay, 30-day mortality, hospital readmission, and ISGPF fistula grade (A, B, and C).

RESULTS

The trial accrued 109 patients, 55 in the SS group and 54 in the FF group. Enrollment was closed prior to the target accrual, following an interim analysis and futility calculation. Due to insufficient enrollment, patients stratified as having a hard gland were excluded (n = 8) from analysis, leaving 101 patients in the soft stratum. The overall pancreatic leak rate was 19.8 % (20 patients) for patients with soft glands. Patients randomized to the FF group had a leak rate of 20 %, as compared with 19.6 % in the SS group (p = 1.000). Fistula grades in both groups were identical: 1A, 8B, and 1C in the FF group as compared to 1A, 8B, and 1C in the SS group. Complication rates were comparable between the two groups. The median length of postoperative hospital stay was 5 days in both groups. There was a trend towards a higher 30-day readmission rate in the FF group (28 % vs. 17.6 %, p = 0.243).

CONCLUSION

The addition of a falciform ligament patch and fibrin glue to standard stapled or sutured remnant closure did not reduce the rate or severity of pancreatic fistula in patients undergoing distal pancreatectomy (ClinicalTrials.gov NCT00889213).

Evolution of pancreatoduodenectomy in a tertiary cancer center in India: improved results from service reconfiguration

BACKGROUND

Pancreatic cancer incidence in India is low. Over the years, refinements in technique of pancreatoduodenectomy (PD) may have improved outcomes. No data is available from India, South-Central, or South West Asia to assess the impact of these refinements.

PURPOSE

To assess the impact of service reconfiguration and standardized protocols on outcomes of PD in a tertiary cancer center in India.

METHODS

Three specific time periods marking major shifts in practice and performance of PD were identified, viz. periods A (1992-2001; pancreaticogastrostomy predominantly performed), B (2003-July 2009; standardization of pancreaticojejunal anastomosis), and C (August 2009-December 2011; introduction of neoadjuvant chemo-radiotherapy and increased surgical volume).

RESULTS

500 PDs were performed with a morbidity and mortality rate of 33% and 5.4%, respectively. Over the three periods, volume of cases/year significantly increased from 16 to 60 (p < 0.0001). Overall incidence of post-operative pancreatic anastomotic leak/fistula (POPF), hemorrhage, delayed gastric emptying (DGE), and bile leak was 11%, 6%, 3.4%, and 3.2%, respectively. The overall morbidity rates, as well as, the above individual complications significantly reduced from period A to B (p < 0.01) with no statistical difference between periods B and C.

CONCLUSION

Evolution of practice and perioperative management of PD for pancreatic cancer at our center improved perioperative outcomes and helped sustain the improvements despite increasing surgical volume. By adopting standardized practices and gradually improving experience, countries with low incidence of pancreatic cancer and resource constraints can achieve outcomes comparable to high-incidence, developed nations.

SYNOPSIS

The manuscript represents the largest series on perioperative outcomes for pancreatoduodenectomy from South West and South-Central Asia - a region with a low incidence of pancreatic cancer and a disproportionate distribution of resources highlighting the impact of high volumes, standardization and service reconfiguration.

[Results of the laparoscopic approach in left-sided pancreatectomy]

INTRODUCTION

Laparoscopic left-sided pancreatectomy (LLP) is an accepted technique for the treatment of benign and pre-malignant lesions of the left side of the pancreas, but there is still controversy on its use for malignant ones.

OBJECTIVE

To evaluate our results in LLP as a routine technique for primary lesions of the left pancreas.

PATIENTS AND METHODS

We performed LLP in 15 patients for primary lesions of the pancreas from November 2007 to November 2011. An intra-abdominal drainage was left in all cases, and the recommendations of the International Study Group for Pancreatic Fistula were followed.

RESULTS

The mean age of the patients was 64±13 years. Six radical spleno-pancreatectomies, 3 corporo-caudal with preservation of the spleen, and 6 pure distal (4 with preservation of the spleen). There was one conversion. The mean surgical time was 230±69 minutes. The mean post-operative stay was 8.1±7.6 days. At 90 days, complications were detected in 4 patients; 3 grade II and one grade V according to the modified classification of Clavien. There was one grade B pancreatic fistula. The diagnosis was a malignant neoplasm in 53% of cases. The number of resected lymph nodes in the cases where a radical resection was planned due to cancer was 21.7±11.5, there being negative margins in all cases.

CONCLUSIONS

LLP may be considered as a suitable technique for the treatment of primary pancreatic lesions, including malignant ones, provided that it is performed by groups with experience in pancreatic surgery and highly trained in laparoscopic surgery.

Management of remnant pancreatic stump fto prevent the development of postoperative pancreatic fistulas after distal pancreatectomy: current evidence and our strategy

Distal pancreatectomy (DP) is the most common surgical procedure for treating benign and malignant lesions in the body or tail of the pancreas. Although the mortality rate related to DP has recently been reduced, the postoperative morbidity remains high. The most frequent and dismal complication occurring after DP is the development of postoperative pancreatic fistulas (POPF). Several resection methods and closure techniques for treating remnant pancreas have been developed in an effort to reduce the incidence of complications, especially POPF. However, the optimal procedure has not yet been established. In this review, we summarize the current clinical data and evidence for surgical techniques and perioperative management strategies for preventing POPF after DP. Finally, we introduce our non-closure technique for managing remnant pancreatic stumps.

Implementation of an enhanced recovery programme following pancreaticoduodenectomy

OBJECTIVES

The aim of this prospective study was to investigate the implementation of an enhanced recovery after surgery (ERAS) programme following pancreaticoduodenectomy (PD).

METHODS

Patients undergoing PD were managed according to an ERAS protocol. Outcome measures included postoperative mortality, morbidity, hospitalization and 30-day readmission rate. Key protocol targets were: nasogastric tube (NGT) removal [postoperative day (PoD) 1]; resumption of oral fluids (PoD 1); urinary catheter removal (PoD 3); high-dependency unit (HDU) discharge (PoD 3); tolerating diet (PoD 4); drain removal (PoD 5), and hospital discharge (PoD 6).

RESULTS

Data were collected for 50 patients (24 male; median age 67 years). Rates of mortality, morbidity and readmission were 4%, 46% and 4%, respectively. The median length of postoperative hospitalization was 10 days. The proportions of patients achieving key targets were: 78% for NGT removal; 82% for resumption of oral fluids; 48% for urinary catheter removal; 82% for HDU discharge; 86% for tolerating diet; 84% for meeting mobility targets, and 72% for drain removal. One patient was discharged by PoD 6, eight patients by PoD 7, 15 patients by PoD 8 and 26 patients (52%) by PoD 10. Discharge was delayed in 16 patients for social or transport-related reasons.

CONCLUSIONS

The ERAS protocol was implemented safely. Achieving certain targets was challenging. Non-medical causes remain a significant factor in delayed discharge following PD.

Factors involved in health-related transitions after curative resection for pancreatic cancer. 10-years experience: a multi state model

BACKGROUND

Pancreatic cancer is one of the least common tumours, nevertheless it is one of the most lethal. This lethality is mainly due to the fact that the vast majority of patients are diagnosed in an advanced stage. The purpose of this study was to investigate how different covariates affect the transition to death or discharge with and without complications after pancreatic resection.

METHODS

We analyse the impact of different factors on transitions after pancreatic resection based on a multi state model.

RESULTS

Transitions of interest include the transition to death/discharge with/without complications after pancreatic resection. We consider presence of comorbidities, higher age (>60), gender-male, lower hospital volume (<10 cases per year), type of surgery, localization of tumour and transfusion received as covariates with a potentially negative effect on the transition intensities to death with or without complications.

CONCLUSIONS

The multi-state model allows for a very detailed analysis of the impact of covariates on each transition, since effects of covariates may change depending on the current state of the patient, thus helping surgeons and patients throughout the surgical process and counselling patients if needed.

Toward defining grade C pancreatic fistula following pancreaticoduodenectomy: incidence, risk factors, management and outcome

BACKGROUND

In 2005 the International Study Group for Pancreatic Fistula (ISGPF) created a definition and grading system for pancreatic fistulae (PF) in which grade C denotes the most severe and potentially life-threatening type. Factors and outcomes associated with grade C fistulae have been ill defined.

METHODS

Systematic searches of PubMed and EMBASE were conducted by two independent reviewers utilizing the keywords 'pancreaticoduodenectomy' (PD) and 'pancreatic fistula'. Inclusion criteria were: (i) a sample of ≥100 patients; (ii) consecutive accrual of all pathologies, and (iii) use of the ISGPF definition and grading system. Quality appraisal and data extraction were performed using pilot-tested templates.

RESULTS

Fourteen articles describing a total of 2706 PDs met the study entrance criteria. Pancreatic fistulae occurred in 479 patients (18%) and included 71 grade C PF that were directly responsible for 25 deaths (35% mortality rate). Only two studies analysed risk factors; these found soft pancreatic texture and histology other than adenocarcinoma to be the most common risk factors. Ten studies reported management strategies and indicated that 51% of patients required reoperation.

CONCLUSIONS

Grade C PF: (i) accounts for 15% of fistulae following PD and has an associated mortality rate of 35%; (ii) occurs most commonly in pathology associated with a soft remnant, and (iii) requires reoperation in approximately one half of patients. The published literature incompletely describes grade C PF.

Vascular invasion in pancreatic cancer: tumor biology or tumor topography?

BACKGROUND

Although vascular resection in pancreatic adenocarcinoma increases the resection rate, involvement of the vascular structures frequently is assumed to be associated with a more aggressive tumor biology and tumor cell dissemination. Our study's aim was to assess the correlation of vascular tumor involvement with adverse, clinicopathologic prognosticators and with the extent of tumor cell dissemination.

METHODS

We studied 108 patients who had undergone pancreatic resection, of whom 39 underwent vascular resection. Clinical parameters and the postoperative course were recorded. Formalin-embedded lymph node samples as well as bone marrow aspirates were screened immunohistochemically for disseminated tumor cells. Univariate and multivariate analyses were performed using the log-rank test and the Cox proportional-hazard models.

RESULTS

Overall, 2,388 lymph nodes and bone marrow aspirates from 49 matched patients were screened immunohistochemically. Fully 50% of the patients had disseminated tumor cells in lymph nodes and 27% in bone marrow. The mean observation period in cohort was 28 months. Vascular resection did not correlate with prognostically relevant parameters. Disseminated tumor cells in lymph nodes were associated with a decrease in relapse-free survival (P = .016) and were confirmed as independent indicators for a decrease in metastasis-free survival at multivariate analysis. There was no adverse prognostic influence of vascular resection, and there was no increased frequency of disseminated tumor cells in patients undergoing vascular resection.

CONCLUSION

These results support the hypothesis that the presence of vascular tumor involvement of peripancreatic vessels seems to be an indicator of unfavorable tumor topography, instead of being a sign of adverse tumor biology. Thus, vascular resection in pancreatic cancer appears to be warranted to achieve tumor-free margins.

Distal Pancreatectomy--own experience

THE AIM OF THE STUDY

was the retrospective analysis of early results after distal pancreatectomy (DP).

MATERIAL AND METHODS

During the period between January, 2000 and December, 2010 distal pancreatectomy was performed in 73 patients, including 32 (43.83%) male, and 41 (56.16%) female patients. Average patient age amounted to 53.92 ± 14.37 years. Surgery was performed by means of laparoscopy or the classical method.

RESULTS

The mean duration of the procedure amounted to 179.79 ± 59.90 minutes. Fifty-nine (80.82%) patients were subject to splenectomy. After the resection the pancreatic stump was hand-sewn in 69 patients. Pancreatoenterostomy was performed in 4 (5.47%) patients. Early postoperative complications occurred in 11 (15%) patients. Reoperation was required in two (2.7 %) patients. The postoperative mortality rate amounted to 2.7%. The average hospitalization period after surgery amounted to 12.72 ± 9.8 (1- 66) days.

CONCLUSIONS

Distal pancreatectomy performed in a center experienced in pancreatic surgery is a safe procedure characterized by a low rate of complications and mortality.

Bacteribilia with resistant microorganisms after preoperative biliary drainage--the influence of bacteria on postoperative outcome

BACKGROUND

In pancreatic surgery, preoperative biliary drainage (PBD) leads to bacteribilia. Whether positive bile duct cultures are associated with a higher postoperative morbidity might be related to the resistance of the species isolated from bile.

STUDY

Intraoperative bile duct cultures were collected from all patients who underwent pancreatic surgery. Postoperative morbidity was analyzed according to the species and the resistance found on bile duct cultures.

RESULTS

Fifty-five percent (166/301) of patients had PBD, while 45% (135/301) underwent primary operation. PBD was associated with a positive bile duct culture in 87% (144/166) versus 21% (28/135) in patients without PBD (p = 0.001) and polymicrobial infections in 53% (88/166) versus 6% (8/135) (p = 0.001). Postoperative morbidity was 40% (121/301); mortality was 3% (9/301). PBD was not associated with morbidity and mortality, but resistant species on bile duct cultures lead to significantly more postoperative complications, 54% (25/46) versus 38% (96/255) (p = 0.033), with significantly more antibiotic therapies.

CONCLUSION

PBD is associated with polymicrobial infections with resistant microorganisms, resulting in more postoperative complications. Since PBD cannot always be avoided, surgeons and gastroenterologists must be aware of their institutional surveillance data to identify patients at risk for postoperative complications.

Extended distal pancreatectomy with en bloc resection of the celiac axis for locally advanced pancreatic cancer: a case report and review of the literature

Due to a lack of early symptoms, pancreatic cancers of the body and tail are discovered mostly at advanced stages. These locally advanced cancers often involve the celiac axis or the common hepatic artery and are therefore declared unresectable. The extended distal pancreatectomy with en bloc resection of the celiac artery may offer a chance of complete resection. We present the case of a 48-year-old female with pancreatic body cancer invading the celiac axis. The patient underwent laparoscopy to exclude hepatic and peritoneal metastasis. Subsequently, a selective embolization of the common hepatic artery was performed to enlarge arterial flow to the hepatobiliary system and the stomach via the pancreatoduodenal arcades from the superior mesenteric artery. Fifteen days after embolization, the extended distal pancreatectomy with splenectomy and en bloc resection of the celiac axis was carried out. The postoperative course was uneventful, and complete tumor resection was achieved. This case report and a review of the literature show the feasibility and safety of the extended distal pancreatectomy with en bloc resection of the celiac axis. A preoperative embolization of the celiac axis may avoid ischemia-related complications of the stomach or the liver.

Pancreaticoduodenectomy in a tertiary referral center in Saudi Arabia: a retrospective case series

CONTEXT

Perioperative outcome of pancreaticoduodenectomy is related to work load volume and to whether the procedure is carried out in a tertiary specialized hepato-pancreatico-biliary (HPB) unit.

OBJECTIVE

To evaluate the perioperative outcome associated with pancreaticoduodenectomy in a newly established HPB unit.

PATIENTS

Analysis of 32 patients who underwent pancreaticoduodenectomy (PD) for benign and malignant indications.

DESIGN

Retrospective collection of data on preoperative, intraoperative and postoperative care of all patients undergoing PD.

RESULTS

Thirty-two patients (16 male and 16 female) with a mean age of 59.5±12.7years were analyzed. The overall morbidity rate was high at 53%. The most common complication was wound infection (n=11; 34.4%). Pancreatic and biliary leaks were seen in 5 (15.6%) and 2 (6.2%) cases, respectively, while delayed gastric emptying was recorded in 7 (21.9%). The female sex was not associated with increased morbidity. Presence of co-morbid illness, pylorus-preserving PD, intra-operative blood loss ⩾1L, and perioperative blood transfusion were not associated with significantly increased morbidity. The overall hospital mortality was 3.1% and the cumulative overall (OS) and disease free survival (DFS) at 1year were 80% and 82.3%, respectively. The cumulative overall survival for pancreatic cancer vs ampullary tumor at 1year were 52% vs 80%, respectively.

CONCLUSION

PD is associated with a low risk of operative death when performed by specialized HPB surgeons even in a tertiary referral hospital. However, the postoperative morbidity rate remains high, mostly due to wound infection. Further improvement by reducing postoperative infection may help curtail the high postoperative morbidity.

Use of omentum or falciform ligament does not decrease complications after pancreaticoduodenectomy: nationwide survey of the Japanese Society of Pancreatic Surgery

BACKGROUND

Wrapping is thought to prevent pancreatic fistula and postoperative hemorrhage for pancreaticoduodenectomy (PD), and we analyzed whether omentum/falciform ligament wrapping decreases postoperative complications after PD.

METHODS

This is a retrospective study of wrapping using the omentum/falciform ligament in patients that underwent PD between January 2006 and June 2008 in 139 institutions that were members of the Japanese Society of Pancreatic Surgery.

RESULTS

Ninety-one institutions responded to the questionnaires, and data were accumulated from 3,288 patients. The data from 2,597 patients were acceptable for analysis; 918 (35.3%) patients underwent wrapping and 1,679 patients did not. A pancreatic fistula occurred in 623 patients (37.3%) in the nonwrapping group, in comparison to 393 patients (42.8%) in the wrapping group (P = .006). The incidence of a grade B/C pancreatic fistula was lower in the nonwrapping group than the wrapping group (16.7% vs. 21.5%; P = .002). An intra-abdominal hemorrhage occurred in 54 patients (3.2%) in the nonwrapping group, which was similar to the incidence in the wrapping group (32 patients; 3.5%). The mortality was 1.3% and 1.0% in nonwrapping and wrapping groups, respectively. A multivariate analysis revealed 7 independent risk factors for pancreatic fistula; male, hypoalbuminemia, soft pancreas, long operation time, extended resection, pylorus preservation, and omentum wrapping. There were 4 independent risk factors for early intra-abdominal hemorrhage and 2 independent risk factors for late intra-abdominal hemorrhage.

CONCLUSION

This retrospective study revealed that omentum wrapping did not decrease the incidence of pancreatic fistula. An additional validation study is necessary to evaluate the efficacy of wrapping for PD.

High surgical morbidity following distal pancreatectomy: still an unsolved problem

BACKGROUND

High surgical morbidity following distal pancreatectomy, especially pancreatic fistula, remains an unsolved problem. The aim of this study was to identify potential risk factors for surgical morbidity with a focus on the development of pancreatic fistula.

METHODS

Clinicopathologic parameters were collected for 283 patients who underwent distal pancreatectomy between January 2000 and May 2010. Logistic regression analyses were performed to identify potential risk factors for surgical morbidity and pancreatic fistula.

RESULTS

Spleen-preserving pancreatectomy was carried out in 12% of all cases and multivisceral resections were performed in 37.8%. For closure of the pancreatic remnant, three different techniques were used: hand-sewn suture in 44.5%, pancreaticojejunal anastomosis in 24%, and closure by stapler in 31.5%. Overall morbidity and mortality were 53 and 3.5%. Surgical morbidity was observed in 50.2% of all cases and pancreatic fistula in 24%. The stapling group had significantly higher surgical morbidity at 65.2% (p=0.001) and the most pancreatic fistulas, though this did not reach statistical significance (p=0.189). Univariate and multivariate logistic analyses indicated that closure by stapler [odds ratio (OR)=3.61; p<0.001] is a risk factor for surgical morbidity.

CONCLUSION

Closure of the pancreatic remnant by using a stapling device was associated with an increased risk of surgical morbidity. With an increasing number of laparoscopic distal pancreatectomies being performed, further studies analyzing the use of stapling devices and newer closure techniques are needed.

Effect of antecolic or retrocolic reconstruction of the gastro/duodenojejunostomy on delayed gastric emptying after pancreaticoduodenectomy: a randomized controlled trial

OBJECTIVE

To study the effect of antecolic vs. retrocolic reconstruction on delayed gastric emptying (DGE) after pancreaticoduodenectomy (PD) and to analyze factors which may be associated with post-PD DGE. DGE is a troublesome complication occurring in 30-40% of patients undergoing PD leading to increased postoperative morbidity. Many factors have been implicated in the pathogenesis of DGE. Among the various methods employed to reduce the incidence, recent reports have suggested that an antecolic reconstruction of gastro/duodenojejunostomy may decrease the incidence of DGE.

METHODS

Between Sep 2006 and Nov 2008, 95 patients requiring PD (for both malignant and benign conditions) were eligible for the study. Of these, 72 patients finally underwent a PD and were randomized to either a retrocolic or antecolic reconstruction of the gastro/duodenojejunostomy. All patients underwent the standard Whipple's or a pylorus preserving pancreaticoduodenectomy (PPPD), and the randomization was stratified according to the type of PD done. DGE was assessed clinically using the Johns Hopkins criteria (Yeo et al. in Ann Surg 218: 229-37, 1993). In patients suspected to have DGE, mechanical causes were excluded by imaging and/or endoscopy. Occurrence of DGE was the primary endpoint, whereas duration of hospital stay and occurrence of intra-abdominal complications were the secondary end points.

RESULTS

The antecolic and retrocolic groups were comparable with regard to patient demographics, diagnosis, and other preoperative, intraoperative, and postoperative factors. Overall, DGE occurred in 21 patients (30.9%). There was no significant difference in the incidence of DGE in the antecolic vs. the retrocolic group (34.4% vs. 27.8%; p = 0.6). On univariate analysis, older age, use of octreotide, and intra-abdominal complications were significantly associated with the occurrence of DGE; however, on a multivariate analysis, only age was found to be significant (p = 0.02). The mean postoperative stay was longer among patients who developed DGE (21.9 ± 9.3 days vs. 13 ± 6.9 days; p = 0.0001).

CONCLUSIONS

Delayed gastric emptying is a cause of significant morbidity and prolongs the duration of hospitalization following pancreaticoduodenectomy. The incidence of DGE does not appear to be related to the method of reconstruction (antecolic or retrocolic). Older age may be a risk factor for its occurrence.

Is pancreaticoduodenectomy justified in elderly patients?

BACKGROUND

Although mortality & morbidity for pancreaticoduodenectomy (PD) have improved significantly over the last two decades, the concern for elderly undergoing PD remains. This study examines the outcome of the elderly patients who had pancreaticoduodenectomy in our institution.

METHODS

A prospective database comprising 69 patients who underwent pancreaticoduodenectomy between 2001 and May 2008 was analyzed. Using WHO definition, elderly patient is defined as age 65 and above in this study. Two groups of patients were compared [Group 1: Age ≤65 & Group 2: Age >65].

RESULTS

The mean age of our patients was 62 ± 11 years. There were 37 (54%) patients in Group 1 and 32 (46%) patients in Group 2. There was no statistical difference between the two groups in terms of gender and race. However, there were more patients in the Group 2 with >2 comorbidities (p = 0.03). The median duration of operation was significantly longer in Group 2 (550 min vs 471 min, p = 0.04). Morbidity rate in Group 2 was higher (56% vs. 44%, p = 0.04). There was higher proportion of post-operative pancreatic fistula (POPF) in the elderly group (37.5% vs. 16.7%, p = 0.05). Majority of them are Grade A POPF according to the ISG definition. The median post-operative length-of-stay (LOS) in hospital was 9 days longer in Group 2 (p = 0.01). Mortality rate between the 2 groups of patients was comparable (0% vs. 3%, p = 0.28).

CONCLUSION

Elderly patients are at increased risk of morbidity in pancreatocoduodenectomy, in particular POPF. However, morbidity and mortality rates are acceptable. It is therefore justified to offer PD to elderly patients who do not have significant cardiopulmonary comorbidities.