Left-sided pancreatectomy: a multicenter comparison of laparoscopic and open approaches. Ann Surg. 2008;248:438-446. [PMID: 18791364 DOI: 10.1097/sla.0b013e318185a990]

The impact of cirrhosis on short and long postoperative outcomes after distal pancreatectomy

BACKGROUND

The impact of cirrhosis on the postoperative outcomes of distal pancreatectomy is yet to be reported. We aimed to evaluate the outcomes of distal pancreatectomy in patients with cirrhosis.

METHODS

We conducted a retrospective, multicentric study patients with cirrhosis who underwent planned distal pancreatectomy between 2008 and 2020 in French high volume centers. Patients with cirrhosis were matched 1:4 for demographic, surgical, and histologic criteria with patients without cirrhosis. The primary endpoint was severe morbidity (Clavien-Dindo grade ≥III). The secondary endpoints were postoperative complications, specifically related to cirrhosis and pancreatic surgery, and survival for patients with pancreatic adenocarcinoma.

RESULTS

Overall, 32 patients with cirrhosis were matched with 128 patients without cirrhosis. Most patients (93.5%) had Child-Pugh A cirrhosis. The severe morbidity rate after distal pancreatectomy was higher in patients with cirrhosis than in those without cirrhosis (28.13% vs 25.75%, P = .11. The operative time was significantly longer in the cirrhotic group compared with controls (P = .01). However, patients with and without cirrhosis had comparable blood loss and conversion rates. Postoperatively, the two groups had similar rates of pancreatic fistula, hemorrhage, reoperation, postoperative mortality, and survival rates at 1, 3, and 5 years.

CONCLUSION

The current study suggests that distal pancreatectomy in high-volume centers is feasible for patients with compensated cirrhosis.

Comparison of perioperative and oncologic outcomes after open, laparoscopic, and robotic distal pancreatectomy: a single-center retrospective study

As minimally invasive surgery gains grounds, surgeons are switching more towards laparoscopic distal pancreatectomy (LDP) and robotic distal pancreatectomy (RDP) as opposed to open distal pancreatectomy (ODP). Through this study, we aimed at exploring the differences in perioperative and oncologic outcomes among the three surgical methods. We retrospectively collected data from 303 patients who underwent distal pancreatectomy (DP) at a single high-volume institution between June 2015 and December 2021. We equally compared the perioperative and oncologic outcomes in patients who underwent ODP, LDP, and RDP by analyzing clinicopathologic and survival data. We consecutively included 303 cases in the study: open = 147 (48.5%), laparoscopic = 50 (16.5%), and robotic = 106 (35.0%). The median tumor size was significantly larger in the ODP group (P < 0.001) compared to the others. Cases in the RDP group experienced a longer duration of surgery (P < 0.001), smaller amount of blood loss (P < 0.001), smaller amount of blood transfusion (P = 0.042), and a shorter duration of hospital stay (p = 0.040) compared to cases in the ODP group. There was no significant difference observed when comparing other postoperative outcomes across the groups. Overall survival (OS) and progression-free survival (PFS) were similar across the significant differences among the three groups. The short-term postoperative and oncologic outcomes observed in the RDP and LDP groups were not inferior to those in the ODP group. The RDP has some perioperative advantages over the ODP. Therefore, RDP and LDP can safely and feasibly be performed in selected pancreatic tumors by experienced pancreatic surgeons.

Quality of life after pancreatic surgery

BACKGROUND

Pancreatic surgery is challenging owing to the anatomical characteristics of the pancreas. Increasing attention has been paid to changes in quality of life (QOL) after pancreatic surgery.

AIM

To summarize and analyze current research results on QOL after pancreatic surgery.

METHODS

A systematic search of the literature available on PubMed and EMBASE was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Relevant studies were identified by screening the references of retrieved articles. Studies on patients' QOL after pancreatic surgery published after January 1, 2012, were included. These included prospective and retrospective studies on patients' QOL after several types of pancreatic surgeries. The results of these primary studies were summarized inductively.

RESULTS

A total of 45 articles were included in the study, of which 13 were related to pancreaticoduodenectomy (PD), seven to duodenum-preserving pancreatic head resection (DPPHR), nine to distal pancreatectomy (DP), two to central pancreatectomy (CP), and 14 to total pancreatectomy (TP). Some studies showed that 3-6 months were needed for QOL recovery after PD, whereas others showed that 6-12 months was more accurate. Although TP and PD had similar influences on QOL, patients needed longer to recover to preoperative or baseline levels after TP. The QOL was better after DPPHR than PD. However, the superiority of the QOL between patients who underwent CP and PD remains controversial. The decrease in exocrine and endocrine functions postoperatively was the main factor affecting the QOL. Minimally invasive surgery could improve patients' QOL in the early stages after PD and DP; however, the long-term effect remains unclear.

CONCLUSION

The procedure among PD, DP, CP, and TP with a superior postoperative QOL is controversial. The long-term benefits of minimally invasive versus open surgeries remain unclear. Further prospective trials are warranted.

Minimally invasive vessel-preservation spleen preserving distal pancreatectomy-how I do it, tips and tricks and clinical results

BACKGROUND

Minimally invasive spleen-preserving distal pancreatectomy (SPDP) has emerged as a parenchyma-preserving approach and has become the standard treatment for pancreatic benign and low-grade malignant lesions. Nevertheless, minimally invasive SPDP is still technically challenging, especially when vessel preservation is intended. This study aims to describe the technique and outcomes of laparoscopic (LSPDP) and robot-assisted spleen-preserving distal pancreatectomy (RSPDP) with intended vessel preservation, highlighting the important tips and tricks to overcome technical obstacles and optimize surgical outcomes.

METHODS

A retrospective observational study of consecutive patients undergoing LSPDP and RSPDP with intended vessel preservation by a single surgeon in two different centers. A video demonstrating both surgical techniques is attached.

RESULTS

A total of 50 patients who underwent minimally invasive SPDP were included of which 88% underwent LSPDP and 12% RSPDP. Splenic vessels were preserved in 37 patients (74%) while a salvage vessel-resecting technique was performed in 13 patients (26%). The average surgery time was 178 ± 74 min for the vessel-preserving and 188 ± 57 for the vessel-resecting technique (p = 0.706) with an estimated blood loss of 100 mL in both groups (p = 0.663). The overall complication rate was 46% (n = 23) with major complications (Clavien Dindo ≥ III) observed in 14% (n = 7) of the patients. No conversions occurred. The median length of hospital stay was 4 days.

CONCLUSION

This study presented the results after minimally invasive SPDP with intended vessel preservation by a highly experienced pancreatic surgeon. It provided tips and tricks to successfully accomplish a minimally invasive SPDP, which can contribute to quick patient rehabilitation and optimal postoperative results.

Laparoscopic pancreatic enucleation: cystic lesions and proximity to the Wirsung duct increase postoperative pancreatic fistula

BACKGROUND

Risk factors for postoperative pancreatic fistula (POPF) following pancreatic enucleation by the open approach (OpenEN) are well known. However, ENs are more frequently performed laparoscopically (LapEN). The aim of this study was to analyze the risk factors of POPF following LapEN.

METHODS AND PATIENTS

All patients in our prospective database who underwent LapEN were evaluated. We report the demographics, surgical, early and long-term outcomes. Numerous variables were analyzed to identify the risk factors of POPF.

RESULTS

From 2008 to 2020, 650 laparoscopic pancreatic resections were performed including 64 EN (10%). The median age was 51 years old (17-79), median BMI was 24 (19-48), and 44 patients were women (69%). The main presentation was an incidental diagnosis (n = 40; 62%), pain (n= 10;16%), and hypoglycemia (n = 8;12%). The main indications were neuroendocrine tumors (40; 63%), mucinous cystadenomas (15; 23%), intraductal papillary mucinous neoplasie (3; 5%), and other benign cysts (6; 9%). Lesions were located on the distal pancreas (43; 67%), head (n = 17; 27%), and neck (4; 6%). The median size was 20 mm (9-110); 30 mm (20-110) for mucinous cystadenoma and 18 mm (8-33) for NET. The median operative time was 90 mn (30-330), median blood loss was 20 ml (0-800) ml, and there were no transfusions and one conversion. There were no mortalities and overall morbidity (n = 22; 34%) included grades B and C POPF (10;16%) and post-pancreatectomy hemorrhage (4; 6%). The median hospital stay was 7 days (3-42). There were no invaded lymph nodes and all cystic lesions were nonmalignant. After a mean follow-up of 24 months, there was no recurrence. The risk factors for grades B/C POPF were mucinous cystadenoma and proximity to the Wirsung duct < 3 mm.

CONCLUSION

In this series, the outcome of LapEN was excellent with no mortality and a low rate of morbidity. However, the risk of POPF is increased with cystic lesions and those close to the Wirsung duct.

Laparoscopic Pancreatoduodenectomy in Elderly Patients: A Systematic Review and Meta-Analysis

Background and Aims: Recent single-center retrospective studies have focused on laparoscopic pancreatoduodenectomy (LPD) in elderly patients, and compared the outcomes between the laparoscopic and open approaches. Our study aimed to determine the outcomes of LPD in the elderly patients, by performing a systematic review and a meta-analysis of relevant studies. Methods: A comprehensive literature review was conducted utilizing the Embase, Medline, PubMed, Scopus and Cochrane databases to identify all studies that compared laparoscopic vs. open approach for pancreatoduodenectomy (PD). Results: Five retrospective studies were included in the final analysis. Overall, 90-day mortality rates were significantly decreased after LPD in elderly patients compared with open approaches (RR = 0.56; 95%CI: 0.32−0.96; p = 0.037, I2 = 0%). The laparoscopic approach had similar mortality rate at 30-day, readmission rate in hospital, Clavien−Dindo complications, pancreatic fistula grade B/C, complete resection rate, reoperation for complications and blood loss as the open approach. Additionally, comparing with younger patients (<70 years old), no significant differences were seen in elderly cohort patients regarding mortality rate at 90 days, readmission rate to hospital, and complication rate. Conclusions: Based on our meta-analysis, we identify that LPD in elderly is a safe procedure, with significantly lower 90-day mortality rates when compared with the open approach. Our results should be considered with caution, considering the retrospective analyses of the included studies; larger prospective studies are required.

May the robotic approach expand the indications for redo surgery in recurrent pNETs in Multiple Neuroendocrine Neoplasia type 1?

Pancreatic neuroendocrine tumors (pNETs) represent the leading cause of disease-specific mortality in patients with Multiple Neuroendocrine Neoplasia type 1 (MEN1). Although surgery is the recommended treatment for non-functional pNETs &gt;2 cm, the management of recurrent lesions between 1 and 2 cm is controversial. Robotic surgery was used on a 29-year-old female with MEN1 and previous distal splenopancreatectomy that presented with a 1 cm recurrent pNET. The advantages offered by this approach facilitating a precise resection of the tumor and minimizing the postoperative morbidity may favor the decision towards redo surgery for local recurrences &lt;2 cm, expanding current indications.

Implications of leukocytosis following distal pancreatectomy splenectomy (DPS) and association with postoperative complications

BACKGROUND

Early identification of complications after distal pancreatectomy splenectomy (DPS) poses challenges, as white blood cell count (WBC) is confounded by physiologic leukocytosis. We examined WBC patterns associated with complications after DPS.

METHODS

Clinicopathologic data were collected for patients who underwent DPS in our system from 2009 to 2016. We examined WBC, temperature, platelet count (PC), and ratios of these variables as potential early indicators of patients at risk of infections or major complications (MCs).

RESULTS

348 patients met study inclusion, of whom 206 (59%) were women and the median patient age was 59 ± 15 years. Infectious and MC rates were 11% and 16%, respectively, with <1% 30-day mortality. Postoperative WBC peaks were higher in patients with infections and MCs compared with no complication (23 vs. 17, p < 0.0001). WBC peak timing occurred postoperative day (POD) 2-3 for uncomplicated cases while peaks occurred POD9 for patients with infections and MCs.

DISCUSSION

These data define patterns of leukocytosis following DPS. Although differences in infection markers were identified for patients with and without complications, no obvious thresholds were identified. Clinical suspicion for complications after DPS remains our best tool for early identification.

Similar Outcomes in Minimally Invasive versus Open Management of Primary Pancreatic Neuroendocrine Tumors: A Regional, Multi-Institutional Collaborative Analysis

In pancreatic neuroendocrine tumors (PNETs), the impact of minimally invasive (MI) versus open resection on outcomes remains poorly studied. We queried a multi-institutional pancreatic cancer registry for patients with resected non-metastatic PNET from 1996−2020. Recurrence-free (RFS), disease-specific survival (DSS), and operative complications were evaluated. Two hundred and eighty-two patients were identified. Operations were open in 139 (49%) and MI in 143 (51%). Pancreaticoduodenectomy was performed in 77 (27%, n = 23 MI), distal pancreatectomy in 184 (65%, n = 109 MI), enucleation in 13 (5%), and total pancreatectomy in eight (3%). Median follow-up was 50 months. Thirty-six recurrences and 13 deaths from recurrent disease yielded 5-year RFS and DSS of 85% and 95%, respectively. On multivariable analysis, grade 1 (HR 0.07, p < 0.001) and grade 2 (HR 0.20, p = 0.002) tumors were associated with improved RFS, while T3/T4 tumors were associated with worse RFS (OR 2.78, p = 0.04). MI resection was not associated with RFS (HR 0.53, p = 0.14). There was insufficient mortality to evaluate DSS with multivariable analysis. Of 159 patients with available NSQIP data, incisional surgical site infections (SSIs), organ space SSIs, Grade B/C pancreatic fistulas, reoperations, and need for percutaneous drainage did not differ by operative approach (all p > 0.2). Nodal harvest was similar for MI versus open distal pancreatectomies (p = 0.16) and pancreaticoduodenectomies (p = 0.28). Minimally invasive surgical management of PNETs is equivalent for oncologic and postoperative outcomes.

Endoscopic drainage versus percutaneous drainage for the management of infected walled-off necrosis: a comparative analysis

BACKGROUND

Comparative data on percutaneous catheter drainage (PCD) vs EUS-guided drainage (EUS-D) for management of symptomatic walled-off-necrosis (WON), specially infected WON with/without organ failure(OF) is limited.

METHODS

Patients with symptomatic WON were divided into two groups of PCD and EUS-D, depending on the modality of drainage. Resolution of OF, adverse events, and other outcome measures were recorded. The two modalities were compared among infected WON sub-cohort and also degree of solid component (SC).

RESULTS

218 patients (175 males; 80.3%) were included who underwent either PCD (n = 102) or EUS-D (n = 116). Clinical success was significantly higher in the EUS-D group (92.1% vs 64.6%; p < 0.0001) and even for infected WON (n = 128) (p = 0.004), with higher (p = 0.007) and faster (p < 0.0001) OF resolution. Other outcome measures including mortality were significantly higher in the PCD group. Among subgroups, PCD with >40% SC had the worst clinical success/OF resolution rates, while EUS-D with <40% SC had the best outcomes.

CONCLUSION

EUS-D should be preferred over PCD in the management of WON, infected or otherwise, for higher clinical success, and higher/faster resolution of OF. PCD should be avoided in WON with>40% SC.

Comparative analysis of open, laparoscopic and robotic distal pancreatic resection: The United Kingdom's first single-centre experience

INTRODUCTION

Laparoscopic distal pancreatectomy (LDP) has potential advantages over its open equivalent open distal pancreatectomy (ODP) for pancreatic disease in the neck, body and tail. Within the United Kingdom (UK), there has been no previous experience describing the role of robotic distal pancreatectomy (RDP). This study evaluated differences between ODP, LDP and RDP.

METHODS

Patients undergoing distal pancreatectomy performed in the Department of Hepatobiliary and Pancreatic Surgery at the Freeman Hospital between September 2007 and December 2018 were included from a prospectively maintained database. The primary outcome measure was length of hospital stay, and the secondary outcome measures were complication rates graded according to the Clavien-Dindo classification.

RESULTS

Of the 125 patients, the median age was 61 years and 46% were male. Patients undergoing RDP (n = 40) had higher American Society of Anesthesiologists grading III compared to ODP (n = 38) and LDP (n = 47) (57% vs. 37% vs. 38%, P = 0.02). RDP had a slightly lower but not significant conversion rate (10% vs. 13%, P = 0.084), less blood loss (median: 0 vs. 250 ml, P < 0.001) and a higher rate of splenic preservation (30% vs. 2%, P < 0.001) and shorter operative time, once docking time excluded (284 vs. 300 min, P < 0.001) compared to LDP. RDP had a higher R0 resection rate than ODP and LDP (79% vs. 47% vs. 71%, P = 0.078) for neoplasms. RDP was associated with significantly shorter hospital stay than LDP and ODP (8 vs. 9 vs. 10 days, P = 0.001). While there was no significant different in overall complications across the groups, RDP was associated with lower rates of Grade C pancreatic fistula than ODP and LDP (2% vs. 5% vs. 6%, P = 0.194).

CONCLUSION

Minimally invasive pancreatic resection offers potential advantages over ODP, with a trend showing RDP to be marginally superior when compared to conventional LDP, but it is accepted that that this is likely to be at greater expense compared to the other current techniques.

Laparoscopic clamp-crushing enucleation with a pancreatic duct stent for tumors located close to the main pancreatic duct

The perioperative management and technical details of laparoscopic clamp-crushing enucleation for low-malignant-potential pancreatic neuroendocrine neoplasms (PNENs) located close to the main pancreatic duct (MPD) in the body/tail of the pancreas using a perioperative MPD stent are reported. The procedure was performed in two patients with PNEN (13 and 10 mm in diameter) in the body/tail of the pancreas. A naso-pancreatic stent (NPS) was placed preoperatively in both patients. Resection was performed using Maryland-type bipolar forceps. The surgical duration was 139 and 55 min, and the estimated blood loss was 5 and 0 mL, respectively. One patient was discharged uneventfully on postoperative day (POD) 12. The other patient developed a grade B pancreatic fistula, but was discharged on POD 22. Laparoscopic clamp-crushing enucleation with an NPS might be a viable treatment option for tumors located close to the MPD.

International Expert Consensus on Precision Anatomy for minimally invasive distal pancreatectomy: PAM-HBP Surgery Project

BACKGROUND

Surgical views with high resolution and magnification have enabled us to recognize the precise anatomical structures that can be used as landmarks during minimally invasive distal pancreatectomy (MIDP). This study aimed to validate the usefulness of anatomy-based approaches for MIDP before and during the Expert Consensus Meeting: Precision Anatomy for Minimally Invasive HBP Surgery (February 24, 2021).

METHODS

Twenty-five international MIDP experts developed clinical questions regarding surgical anatomy and approaches for MIDP. Studies identified via a comprehensive literature search were classified using Scottish Intercollegiate Guidelines Network methodology. Online Delphi voting was conducted after experts had drafted the recommendations, with the goal of obtaining >75% consensus. Experts discussed the revised recommendations in front of the validation committee and an international audience of 384 attendees. Finalized recommendations were made after a second round of online Delphi voting.

RESULTS

Four clinical questions were addressed, resulting in 10 recommendations. All recommendations reached at least a 75% consensus among experts.

CONCLUSIONS

The expert consensus on precision anatomy for MIDP has been presented as a set of recommendations based on available evidence and expert opinions. These recommendations should guide experts and trainees in performing safe MIDP and foster its appropriate dissemination worldwide.

Does a Laparoscopic Approach to Distal Pancreatectomy for Cancer Contribute to Optimal Adjuvant Chemotherapy Utilization?

BACKGROUND

Although laparoscopic distal pancreatectomy (LDP) versus open approaches (ODP) for pancreatic adenocarcinoma (PDAC) is associated with reduced morbidity, its impact on optimal adjuvant chemotherapy (AC) utilization remains unclear. Furthermore, it is uncertain whether oncologic resection quality markers are equivalent between approaches.

METHODS

The National Cancer Database (NCDB) was queried between 2010 and 2016 for PDAC patients undergoing DP. Effect of LDP vs ODP and institutional case volumes on margin status, hospital stay, 30-day and 90-day mortality, administration of and delay to AC, and 30-day unplanned readmission were analyzed using binary and linear logistic regression. Cox multivariable regression was used to correct for confounders.

RESULTS

The search yielded 3411 patients; 996 (29.2%) had LDP and 2415 (70.8%) had ODP. ODP had higher odds of readmission [odds ratio (OR) 1.681, p = 0.01] and longer hospital stay [β 1.745, p = 0.004]. No difference was found for 30-day mortality [OR 1.689, p = 0.303], 90-day mortality [OR 1.936, p = 0.207], and overall survival [HR 1.231, p = 0.057]. The highest-volume centers had improved odds of AC [OR 1.275, p = 0.027] regardless of approach. LDP conferred lower margin positivity [OR 0.581, p = 0.005], increased AC use [3rd quartile: OR 1.844, p = 0.026; 4th quartile; OR 2.144, p = 0.045], and fewer AC delays [4th quartile: OR 0.786, p = 0.045] in higher-volume centers.

CONCLUSIONS

In selected patients, LDP offers an oncologically safe alternative to ODP for PDAC independent of institutional volume. However, additional oncologic benefit due to optimal AC utilization and lower positive margin rates in higher volume centers suggests that LDP by experienced teams can achieve best possible cancer outcomes.

Precision vascular anatomy for minimally invasive distal pancreatectomy: A systematic review

BACKGROUND

Minimally invasive distal pancreatectomy (MIDP) is increasingly performed worldwide; however, the surgical anatomy required to safely perform MIDP has not yet been fully considered. This review evaluated the literature concerning peripancreatic vascular anatomy, which is considered important to conduct safe MIDP.

METHODS

A database search of PubMed and Ichushi (Japanese) was conducted. Qualified studies investigating the anatomical variations of peripancreatic vessels related to MIDP were evaluated using SIGN methodology.

RESULTS

Of 701 articles yielded by our search strategy, 76 articles were assessed in this systematic review. The important vascular anatomy required to recognize MIDP included the pancreatic parenchymal coverage on the root and the running course of the splenic artery, branching patterns of the splenic artery, confluence positions of the left gastric vein and the inferior mesenteric vein, forms of pancreatic veins including the centro-inferior pancreatic vein, characteristics of the left renal vein, and collateral routes perfusing the spleen following Warshaw's technique. Very few articles evaluating the relationship between the anatomical variations and surgical outcomes of MIDP were found.

CONCLUSIONS

The precise knowledge of peripancreatic vessels is important to adequately complete MIDP. More detailed anatomic analyses and descriptions will benefit surgeons and their patients who are facing these operations.

Results of Standard Stapler Closure of Pancreatic Remnant After Distal Spleno-Pancreatectomy for Adenocarcinoma

Background/Aim: The purpose of this study was to evaluate the results of stapled closure of the pancreatic remnant after cold-knife section of the pancreatic isthmus and distal pancreatectomy for adenocarcinoma. Methods: A retrospective evaluation of 57 consecutive patients undergoing distal spleno-pancreatectomy for adenocarcinoma was performed. The pancreatic isthmus was systematically straight-sectioned with a cold knife, and the remnant was stapled close without additional stitches or adjuncts. The study's main endpoints were postoperative mortality, the occurrence of a pancreatic fistula, the need for a re-operation, the postoperative length of stay in the hospital, the rate of re-admission, and late survival. Results: Postoperative mortality was absent. Seventeen patients (29.8%) presented a pancreatic fistula of grade A in seven cases (41.2%), grade B in eight cases (47.1%), and grade C in two cases (11.8%). Re-operation was required in the two patients (3.5%) with grade C fistula in order to drain an intra-abdominal abscess. The mean postoperative length of stay in the hospital was 15 days (range, 6-62 days). No patient required re-admission. Twenty-nine patients (50.8%) were alive and free from disease, respectively, 12 patients (21.1%) at 12 months, 13 patients (22.8%) at 60 months, and four patients (7.0%) at 120 months from the operation. The remaining patients died of metastatic disease 9-37 months from the operation. Lastly, disease-related mortality was 49.1%. Conclusion: Stapler closure of the pancreatic remnant allows good postoperative results, limiting the formation of pancreatic fistula to the lower limit of its overall reported incidence.

Relevant Clinical Trials for GI Surgeons: a Review of Recent Findings

Over the last decade, a number of practice-changing clinical trials have been published to guide the management of esophageal, gastric, liver, pancreas, appendiceal, and colorectal pathologies. The following review aims to provide a succinct summary of these important trials that merit further critical assessment by every gastrointestinal surgeon. After each review, per the Editors' request, the authors have provided their humble opinion as to the clinical context and application of the data.

Laparoscopic Splenic Vessels and Spleen Preservation Distal Pancreatectomy Via Inferior-Posterior Splenic Vein Approach

BACKGROUND

Preservation of splenic vessels can minimize the risks of splenic infarction and gastric varices in laparoscopic spleen preserving distal pancreatectomy. A well-established procedure would provide high splenic vessels and spleen preservation rate. This study evaluated the outcomes and depending factors of laparoscopic splenic vessels and spleen preservation distal pancreatectomy (LsvspDP) via inferior-posterior splenic vein approach.

MATERIALS AND METHODS

This retrospective study enrolled patients who underwent LsvspDP via inferior-posterior splenic vein approach in National Cheng-Kung University Hospital from February 2009 to June 2019. The clinic-pathologic data were collected and analyzed. The primary outcome of this study was the learning curve based on the cumulative sum analysis. The secondary outcomes were to evaluate the critical factors for the failure of splenic vessels and spleen preservation.

RESULTS

During the study period, a total of 64 patients received LsvspDP attempt. Splenic vessels were successfully preserved in 49 patients and the overall spleen preservation rate was 76.6%. According to cumulative sum analysis, the learning curve of LsvspDP was the 33rd case and several plateaus were observed during the learning curve phase. Old age (P=0.001), tail location (P=0.038), and large tumor (P=0.01) were independent risk factors of failed splenic vessels preservation, whereas the cut-off point of tumor size for prediction of spleen preservation was 5.4 cm. The complication rates were 7.8%, 7.8%, and 12.5% for Clavien grade I, II, and III, respectively, and 0% for Clavien grade IV or V. The rate of postoperative pancreatic fistula-grade B was 14.8%, among which the tail location was lower than the nontail location (0% vs. 24.3%; P=0.008). The mean value of operative time, blood loss, and hospital stay were 198±67 minutes, 139±242 mL, and 8.5±5.6 days, respectively.

CONCLUSIONS

In LsvspDP, the inferior-posterior splenic vein approach resulted in high splenic vessels and spleen preservation rate. Thirty-three patients were required to overcome the learning curve. Old age, tail location, and large tumor size were independent factors for the failure of splenic vessels preservation, whereas the cut-off value for tumor size was 5.4 cm to predict splenic vessels preservation.

The Miami International Evidence-based Guidelines on Minimally Invasive Pancreas Resection

OBJECTIVE

The aim of this study was to develop and externally validate the first evidence-based guidelines on minimally invasive pancreas resection (MIPR) before and during the International Evidence-based Guidelines on Minimally Invasive Pancreas Resection (IG-MIPR) meeting in Miami (March 2019).

SUMMARY BACKGROUND DATA

MIPR has seen rapid development in the past decade. Promising outcomes have been reported by early adopters from high-volume centers. Subsequently, multicenter series as well as randomized controlled trials were reported; however, guidelines for clinical practice were lacking.

METHODS

The Scottisch Intercollegiate Guidelines Network (SIGN) methodology was used, incorporating these 4 items: systematic reviews using PubMed, Embase, and Cochrane databases to answer clinical questions, whenever possible in PICO style, the GRADE approach for assessment of the quality of evidence, the Delphi method for establishing consensus on the developed recommendations, and the AGREE-II instrument for the assessment of guideline quality and external validation. The current guidelines are cosponsored by the International Hepato-Pancreato-Biliary Association, the Americas Hepato-Pancreato-Biliary Association, the Asian-Pacific Hepato-Pancreato-Biliary Association, the European-African Hepato-Pancreato-Biliary Association, the European Association for Endoscopic Surgery, Pancreas Club, the Society of American Gastrointestinal and Endoscopic Surgery, the Society for Surgery of the Alimentary Tract, and the Society of Surgical Oncology.

RESULTS

After screening 16,069 titles, 694 studies were reviewed, and 291 were included. The final 28 recommendations covered 6 topics; laparoscopic and robotic distal pancreatectomy, central pancreatectomy, pancreatoduodenectomy, as well as patient selection, training, learning curve, and minimal annual center volume required to obtain optimal outcomes and patient safety.

CONCLUSION

The IG-MIPR using SIGN methodology give guidance to surgeons, hospital administrators, patients, and medical societies on the use and outcome of MIPR as well as the approach to be taken regarding this challenging type of surgery.

Safe implementation of minimally invasive pancreas resection: a systematic review

BACKGROUND

Minimally invasive pancreas resection (MIPR) has been expanding in the past decade. Excellent outcomes have been reported, however, safety concerns exist. The aim of this study was to define prerequisites for performing MIPR with the objective to guide safe implementation of MIPR into clinical practice.

METHODS

This systematic review was conducted as part of the 2019 Miami International Evidence-Based Guidelines on Minimally Invasive Pancreas Resection (IG-MIPR). PubMed, Embase and Cochrane databases were searched for literature concerning the implementation of MIPR between 1946 and November 2018. Quality assessment was according to The Scottish Intercollegiate Guidelines Network (SIGN).

RESULTS

Overall, 1150 studies were screened, of which 32 studies with 8519 patients were included in this systematic review. Training programs for minimally invasive distal pancreatectomy, laparoscopic pancreatoduodenectomy and robotic pancreatoduodenectomy have been described with acceptable outcomes during the learning curve and improved outcomes after training. Learning curve studies have revealed an association between growing experience and improving perioperative outcomes. In addition, the association between higher center volume and lower mortality and morbidity has been reported by several studies.

CONCLUSION

When embarking on MIPR, it is recommended to participate in a dedicated training program, to assure a sufficient volume, especially when implementing minimally invasive pancreatoduodenectomy, (20 procedures recommended annually), and prospectively collect and closely monitor outcomes for continuous quality assessment, this can be achieved through institutional databases and participation in national or international registries.

Image-guided minimally invasive endopancreatic surgery using a computer-assisted navigation system

BACKGROUND

Minimally invasive endopancreatic surgery (EPS), performing a pancreatic resection from inside the pancreatic duct, has been proposed as an experimental alternative to duodenum-preserving pancreatic head resection in benign diseases such as chronic pancreatitis, but is complicated by difficult spatial orientation when trying to reach structures of interest. This study assessed the feasibility and potential benefits of image-guided EPS using a computer-assisted navigation system in artificial pancreas silicon model.

METHODS

A surgical navigation system displayed a 3D reconstruction of the original computed tomography (CT) scan and the endoscope in relation to a selected target structure. In a first step, different surface landmark (LM)-based and intraparenchymal LM-based approaches for image-to-physical space registration were evaluated. The accuracy of registration was measured as fiducial registration error (FRE). Subsequently, intrapancreatic lesions (n = 8) that were visible on preoperative imaging, but not on the endoscopic view, were targeted with a computer-assisted, image-guided endopancreatic resection technique in pancreas silicon models. After each experiment, a CT scan was obtained for measurement of the shortest distance from the resection cavity to the centre of the lesion.

RESULTS

Intraparenchymal LM registration [FRE 2.24 mm (1.40-2.85)] was more accurate than surface LM registration [FRE 3.46 mm (2.25-4.85); p = 0.035], but not more accurate than combined registration of intraparenchymal and surface LM [FRE 2.46 mm (1.60-3.35); p = 0.052]. Using image-guided EPS, six of seven lesions were successfully targeted. The median distance from the resection cavity to the centre of the lesion on CT was 1.52 mm (0-2.4). In one pancreas, a lesion could not be resected due to the fragility of the pancreas model.

CONCLUSION

Image-guided minimally invasive EPS using a computer-assisted navigation system enabled successful targeting of pancreatic lesions that were invisible on the endoscopic image, but detectable on preoperative imaging. In the clinical setting, this tool could facilitate complex minimally invasive and robotic pancreatic procedures.

Effectiveness of endoscopic ultrasound-guided drainage for noncapsulated postoperative pancreatic collection

BACKGROUND

Postoperative pancreatic collection (POPC) is a frequent complication after pancreatectomy. Although percutaneous drainage (PD) has been the treatment of choice for POPC with encapsulation, endoscopic ultrasound-guided transmural drainage (EUS-TD) was recently reported effective for this condition. The main aim of this retrospective study was to compare EUS-TD and PD in terms of effectiveness and safety as the first procedure in patients with noncapsulated POPC.

METHODS

Consecutive patients who underwent pancreatectomy and developed noncapsulated POPC requiring EUS-TD or PD between April 2003 and May 2018 were enrolled. Noncapsulated POPC was defined as pancreatic collection appearing within 28 days postoperatively and lacking a thick encapsulating inflammatory wall on contrast-enhanced computed tomography. The effectiveness of drainage was compared between the two groups before and after propensity-score matching of patient characteristics. Outcomes of interest included re-intervention rate, number of re-interventions, immediate complication, remote complication, and time to clinical resolution after the procedure.

RESULTS

A sum of 81 patients were included: 14 underwent EUS-TD, and 67 underwent PD. There were significant differences between groups in POPC size and type of surgery. Propensity-score matching selected 13 patients who underwent EUS-TD and 28 who underwent PD. Re-intervention rate (p = 0.045), and number of re-interventions (p = 0.026) were significantly lower in the matched EUS-TD group than in the matched PD group. There were no significant between-group differences in immediate complication and remote complication. The time to clinical resolution after the procedure was significantly shorter in the matched EUS-TD than in the matched PD group (14 versus 26 days; p < 0.0001).

CONCLUSION

EUS-TD is more effective than PD for drainage of noncapsulated POPC. EUS-TD should be considered as the first treatment of choice for noncapsulated POPC visible on EUS.

Short-term surgical morbidity and mortality of distal pancreatectomy performed for benign versus malignant diseases: a NSQIP analysis

BACKGROUND/AIM

Distal pancreatectomy (DP) accounts for 25% of all pancreatic resections. Complications following DP occur in around 40% of the cases. Our aim is to analyze short-term surgical outcomes of DP based on whether the indication for resection was benign or malignant pathology, as well as the effect of the surgical approach, open versus laparoscopic on morbidity and mortality.

METHODS

We studied all patients undergoing DP from the National Surgery Quality Improvement Program (NSQIP) targeted pancreatectomy participant use file from 2014 to 2016. The patients were divided into 2 groups, those who underwent DP for benign diseases (DP-B) and those who underwent DP for malignant diseases (DP-M). We performed multivariate logistic regression to evaluate the association between benign or malignant distal pancreatectomies and 30-day outcomes. We included clinically and/or statistically significant confounders into the models. We also conducted the same analysis in the subgroups of open and laparoscopic DP.

RESULTS

Three thousand five hundred and seventy-nine patients underwent distal pancreatectomy. The most common indication for surgery was malignant disease in 1894 (53%). Thirty-day mortality occurred in 0.4% of DP-B compared to 1.3% DP-M. On multivariate analysis, no significant difference was found in mortality or in the risk of pancreatic fistula between the 2 groups. Bleeding (p = 0.002) and composite morbidity (p = 0.01) were significantly higher in the DP-M group. Among composite morbidities, thromboembolism was significantly associated with DP-M (OR 2.1, p = 0.0004) only when performed with an open approach.

CONCLUSION

DP-M is associated with a significantly higher risk of post-operative bleeding, thromboembolism, and sepsis compared to DP-B but no significant increase in mortality. When further analyzing the impact of the operative approach on morbidity, there was an increased rate of post-operative thromboembolic in the DP-M group when the surgery was performed in an open manner and this increased risk was no longer statistically significant if the DP-M was performed using a minimally invasive approach.

Is Centralization Needed for Patients Undergoing Distal Pancreatectomy?: A Nationwide Study of 3314 Patients

OBJECTIVE

The centralization of complex surgical procedures is associated with better postoperative outcomes. However, little is known about the impact of hospital volume on the outcome after distal pancreatectomy.

METHODS

Using the French national hospital discharge database, we identified all patients having undergone distal pancreatectomy in France between 2012 and 2015. A spline model was applied to determine the caseload cut-off in annual distal pancreatectomy that influenced 90-day postoperative mortality.

RESULTS

A total of 3314 patients were identified. Use of a spline model did not reveal a cut-off in the annual distal pancreatectomy caseload. By taking the median number of distal pancreatectomy (n = 5) and the third quartile (n = 15), we stratified centers into low, intermediate, and high hospital volume groups. The overall postoperative mortality rate was 3.0% and did not differ significantly between these groups. In a multivariable analysis, age, Charlson comorbidity score, septic complications, hemorrhage, shock, and reoperation were independently associated with a greater overall risk of death. However, hospital volume had no impact on mortality after distal pancreatectomy (odds ratio, 0.954; 95% confidence interval, 0.552-1.651, P = 0.867).

CONCLUSIONS

Hospital volume does not seem to influence mortality after distal pancreatectomy in France, and centralization may not necessarily improve outcomes.

Full Robotic Distal Pancreatectomy: Safety and Feasibility Analysis of a Multicenter Cohort of 236 Patients

Introduction. Despite the widespread use of the robotic technology, only a few studies with small sample sizes report its application to pancreatic diseases treatment. Our aim is to present the results of a multicenter study on the safety and feasibility of robot-assisted distal pancreatectomy (RDP). Materials and Methods. All RDPs for benign, borderline, and malignant diseases performed in 5 referral centers from 2008 to 2016 were included. Perioperative outcomes were evaluated. Results. Two hundred thirty-six patients were included. Spleen preservation was performed in 114 cases (48.3%). Operative time was 277.8 ± 93.6 minutes. Progressive improvement in operative time was observed over the study period. Conversion rate was 6.3%. Morbidity occurred in 102 cases (43.2%), mainly due to grade A fistulas. Reoperation was required in 10 patients. Postoperatively, 2 patients died of sepsis due to a grade C fistula. Hospital readmission was necessary in 11 cases. A R0 resection was always achieved, with a mean number of 16.2 ± 15 harvested lymph nodes. Conclusion. To our knowledge, this is one of the largest RDP series. Safety and feasibility including the low conversion rate, the high spleen preservation rate, the adequate operative time, and the acceptable morbidity and mortality rates confirm the validity of this technique. Appropriate oncological outcomes have been also obtained.

Comparison of Clinical Outcomes of Single-Incision Versus Conventional Multiport Laparoscopic Distal Pancreatectomy: A Single Institution Experience

Objectives:

Single-incision laparoscopic procedures have been gaining popularity in recent years due to their minimal incisional morbidity and improved cosmetic outcomes. Herein, we will compare the feasibility and outcomes of single-incision and conventional multiport laparoscopic distal pancreatectomy.

Methods:

This study involves consecutive patients who underwent either single-incision or conventional multiport laparoscopic distal pancreatectomy from March 2007 to February 2014. The patients were divided into two groups, based on the surgical approach: single-incision laparoscopic surgery (Group 1) and conventional multiport laparoscopic surgery (Group 2). The parameters evaluated included estimated blood loss, operative time, postoperative pain, duration of hospital stay, complications, conversion, and final pathology.

Results:

There were a total of 20 patients, 10 in each study group. Baseline characteristics were similar, and there was no mortality in either of the groups. The low-flow pancreatic fistula was the most commonly seen morbidity, but it was ceased spontaneously in each group by a ratio of 30%. The operative time was significantly shorter in Group 2, with a mean of 116 minutes versus a mean of 180 minutes for Group 1 (p<0.001). One of the procedures in Group 2 was converted to open surgery due to peroperative bleeding. The median follow-up periods of the patients were 22 months and 56 months. The spleen was preserved in only 1 patient from Group 1, whereas in Group 2, the spleen preservation was achieved in 5 patients.

Conclusion:

The single-incision laparoscopic technique is a safe and effective alternative to standard laparoscopic distal pancreatectomy.

Identifying Hospital Cost Savings Opportunities by Optimizing Surgical Approach for Distal Pancreatectomy

BACKGROUND

The economic implications of relevant clinicopathologic factors on the surgical approach to distal pancreatectomy (DP) should be clearly defined and understood to potentially allow the implementation of cost reduction strategies.

METHODS

Administrative and clinical datasets of patients undergoing a DP between 2012 and 2016 were merged and queried. Univariate and multivariate analyses were used to identify clinicopathologic predictors of cost differentials for minimally invasive DP (MIDP) relative to open DP (ODP). Time trends in cost were also assessed to identify opportunities for cost containment.

RESULTS

Among two hundred and twenty five patients, 128 underwent an ODP (57%) and 97 a MIDP (43%). The DP groups were comparable with regard to relevant perioperative and disease characteristics. Total hospitalization and total OR costs for MIDP were significantly lower (- 12%, P = 0.0048) and higher (+ 16%, P < 0.0001) respectively, compared to ODP. On univariate analysis, age > 60 (- 12%, P = 0.0262), BMI > 25 (- 10%, P = 0.0222), ASA class ≥ 3 (- 11%, P = 0.0045), OpTime > 230 min (- 16%, P = 0.0004), and T stage ≥ 3 (- 8%, P = 0.0452) were associated with decreased total costs after MIDP compared to ODP. Linear regression analysis revealed that BMI > 25 (Estimate - 0.31, SE 0.15, P = 0.0482), ASA class ≥ 3 (Estimate - 0.36, SE 0.17, P = 0.0344), and T stage ≥ 3 (Estimate - 0.57, SE 0.26, P = 0.0320) were associated with decreased hospitalization costs after MIDP compared to ODP. Overtime, total hospitalization cost for MIDP increased from - 21 to 1% (P = 0.0197), while OR costs for MIDP decreased from + 41% to - 2% (P = 0.0049), nearly equalizing the cost differences between ODP and MIDP.

CONCLUSIONS

Relevant clinicopathologic factors predicted decreased hospitalization costs after MIDP relative to ODP. In equivalent stages of disease, optimizing the surgical approach to DP based on specific clinicopathologic characteristics may afford significant cost-saving opportunities.

Laparoscopic approach of the left side of the pancreas

INTRODUCTION

Laparoscopic left-sided pancreatectomy (LLP) is an increasingly used surgical technique for the treatment of benign and malignant lesions of the left side of the pancreas. The results of LLP as a treatment for primary pancreatic lesions of the head and tail of the pancreas were evaluated.

METHODS

From November 2011 to November 2017, 18 patients underwent surgery for primary lesions of the pancreas by means of a laparoscopic distal pancreatectomy. An intra-abdominal drain tube was used in all cases, and the recommendations of the International Study Group for Pancreatic Fistula (ISGPF) were followed.

RESULTS

The mean age was 66.5years (IQR 46-74). Among the 18 left pancreatectomies performed, four were with splenic preservation, and one was a central pancreatectomy. There were two conversions. The median surgical time was 247.5minutes (IQR 242-275). The median postoperative hospital stay was 7days (IQR 6-8). After 90days, complications were detected in five patients: three gradeII, one gradeIII and one gradeV according to the modified Clavien-Dindo classification. There was one gradeB pancreatic fistula, and four patients had to be readmitted to hospital because of peripancreatic collections. The anatomic pathology diagnosis was malignant neoplasm in 38.9% of cases, all of them with negative resection margins.

CONCLUSIONS

LLP can be considered the technique of choice in the treatment of primary benign pancreatic lesions and an alternative to the open approach in selected patients diagnosed with malignant pancreatic lesions.

Splenic artery as a simple landmark indicating difficulty during laparoscopic distal pancreatectomy

INTRODUCTION

The use of laparoscopic distal pancreatectomy (LDP) is increasing worldwide. It is important for surgeons to predict preoperatively the difficulty and risks of a surgery. However, very few reports have evaluated the impact of patient or tumor factors on the difficulty of LDP. We aimed to determine the predictors of technical difficulties when performing LDP.

METHODS

This study included 34 patients who underwent LDP. Patient information was obtained retrospectively and included age, gender, BMI, primary disease, previous abdominal surgery, previous pancreatitis, tumor size, tumor proximity to the splenic arterial origin, type of splenic artery (SpA), operative time, blood loss, postoperative pancreatic fistula, and length of hospital stay. Univariate and multivariate analyses were performed to determine the predictors of a long operative time. SpA anatomy was classified into two types based on the relationship between its origin and the pancreas. Patients whose SpA origin was upward of the pancreatic parenchyma were classified as SpA type 1, whereas patients whose SpA origin was covered by the pancreatic parenchyma were classified as SpA type 2.

RESULTS

Multivariate analysis revealed SpA type 2 to be an independent risk factor for a long operation (odds ratio = 9.925; 95% confidence interval: 1.461-67.412; P = 0.019). SpA type 2 was related to a longer operative time (P < 0.001) and greater intraoperative blood loss (P = 0.001).

CONCLUSION

Classification according to SpA type is simple and useful for predicting technical difficulty when performing LDP.

Analysis of 90-day cost for open versus minimally invasive distal pancreatectomy

BACKGROUND

Minimally invasive distal pancreatectomy (MIDP) is associated with improved peri-operative outcomes compared to the open approach, though cost-effectiveness of MIDP remains unclear.

METHODS

Patients with pancreatic tumors undergoing open (ODP), robotic (RDP), or laparoscopic distal pancreatectomy (LDP) between 2012-2014 were identified through the Truven Health MarketScan® Database. Median costs (payments) for the index operation and 90-day readmissions were calculated. Multivariable regression was used to predict associations with log 90-day payments.

RESULTS

693 patients underwent ODP, 146 underwent LDP, and 53 RDP. Compared to ODP, LDP and RDP resulted in shorter median length of stay (6 d. ODP vs. 5 d. RDP vs. 4 d. LDP, p<0.01) and lower median payments ($38,350 ODP vs. $34,870 RDP vs. $32,148 LDP, p<0.01) during the index hospitalization. Total median 90-day payments remained significantly lower for both minimally invasive approaches ($40,549 ODP vs. $35,160 RDP vs. $32,797 LDP, p<0.01). On multivariable analysis, LDP and RDP resulted in 90-day cost savings of 21% and 25% relative to ODP, equating to an amount of $8,500-$10,000.

CONCLUSION

MIDP is associated with >$8,500 in lower cost compared to the open approach. Quality improvement initiatives in DP should ensure that lack of training and technical skill are not barriers to MIDP.

The treatment indication and optimal management of fluid collection after laparoscopic distal pancreatectomy

BACKGROUND

Recently, laparoscopic distal pancreatectomy (LDP) has become the standard procedure for resection of left-sided pancreatic tumors. Fluid collection (FC) at the resection margin of the pancreatic stump after LDP is a frequent radiological finding. However, there have been few treatment guidelines and the optimal management for this clinical finding is unclear. The aim of present study is to define the incidence of FC and suggest the optimal management for FC after LDP.

METHODS

A total of 1227 patients who underwent LDP between March 2005 and December 2015 were collected. FC was considered present when the longest diameter of the lesion on CT scan was > 3 cm.

RESULTS

A follow-up with at least two CT image was available for 1102 patients. Of these, 689 (62.5%) patients showed initial fluid collection (IFC) at the pancreas resection site in immediate postoperative CT. IFC (+) group had higher proportion of men, BMI, and higher rate of concomitant splenectomy than IFC (-) group. Among patients with FC after LDP, the treatment group had more frequent leukocytosis and accompanying symptoms than the observation group. Seventy-seven patients underwent therapeutic interventions for FC after LDP. Among them, 55 (71.4%) patients underwent endoscopic ultrasonography-guided gastrocystostomy (EUS-GC). EUS-GC group had a higher success rate (85.6 vs. 63.6%, p < 0.033) and shorter hospital stay after the intervention (5.2 vs. 13.3 days, p < 0.001) than those who underwent other procedures.

CONCLUSIONS

High BMI, male, and concomitant splenectomy contribute to the occurrence of FC after LDP. In most cases, FC after LDP resolved spontaneously over time with observation. The patients with symptomatic FC ultimately required treatment. EUS-GC is the optimal intervention therapy for FC after LDP.

Comparison of surgical outcomes of robot-assisted laparoscopic distal pancreatectomy versus laparoscopic and open resections: A systematic review and meta-analysis

Robot-assisted distal pancreatectomy (RADP) has been developed with the aim of improving surgical quality and overcoming the limitations of laparoscopic distal pancreatectomy (LDP) and open distal pancreatectomy (ODP) for pancreatic resections. A systematic search was performed in the PubMed, EMBASE, Cochrane Library, Web of Science, and China Biology Medicine databases up to December 2016 for studies that compared the surgical outcomes of RADP vs. LDP or ODP for pancreatic resections. The weighted mean differences, odds ratios and 95% confidence intervals were calculated, and the data were combined using the random-effects model. The GRADE system was used to interpret the primary outcomes of this meta-analysis. A total of seventeen non-randomized observational clinical studies involving 2133 patients satisfied the eligibility criteria. Compared with LDP, RADP was associated with a longer operative time (P = 0.018), a shorter hospital length of stay (P = 0.030), and a higher rate of spleen preservation (P = 0.022). Moreover, RADP was associated with a shorter hospital LOS (P = 0.014) and a lower total complication rate (P = 0.034) than ODP. We found no statistically significant differences between the techniques in the mean estimated blood loss, severe complication rate, incidence of total pancreatic fistulas or incidence of severe pancreatic fistulas. The overall quality of evidence was poor for all outcomes. This meta-analysis indicates that RADP may be safe and comparable in terms of surgical results to LDP and ODP. Further RCTs are needed to confirm the outcomes of this meta-analysis.

Laparoscopic distal pancreatectomy: better than open?

Distal pancreatectomy is well suited to the laparoscopic approach. Laparoscopic distal pancreatectomy (LDP) provides the same postoperative recovery advantages reputed to minimal access surgery. However, there have been fears as to the safety of LDP in terms of life-threatening intra-operative events and post-operative complications, adequate carcinological outcomes as compared to traditional (open) distal pancreatectomy (ODP) when performed for cancer, as well as to whether the laparoscopic approach is well adapted to the variety of diseases that may affect the pancreas (ranging from trauma to benign or malignant disease) and whether the minimal access approach is well adapted to perform pancreatic surgery safely in the obese, the elderly or the frail. In this review of the literature, we sought to determine whether LDP was as safe, provided the same oncological outcomes and was applicable to all diseases involving the body and tail of the pancreas, and to particular patient characteristics, compared to the traditional open approach. Last we looked at cost issues. We concluded that this review of the literature allowed to state that laparoscopic distal pancreatectomy is feasible and safe for a wide range of diseases, both benign and malignant. Morbidity, mortality, and probably, also, carcinological outcomes are comparable to open surgery. The overall costs are similar but the advantages of minimal access surgery make it the preferred approach, once the surgical expertise is acquired and present.

Endoscopic versus percutaneous management for symptomatic pancreatic fluid collections: a systematic review and meta-analysis

BACKGROUND

 Symptomatic pancreatic fluid collections (PFCs) are managed by surgical, percutaneous, or endoscopic drainage. Due to morbidity associated with surgical drainage, percutaneous and/or endoscopic options have increasingly been used as initial management.

AIMS

 We conducted a systematic review and meta-analysis comparing the efficacy and safety of endoscopic versus percutaneous drainage for management of PFCs.

METHODS

 We searched several databases from inception through 31 August 2017 to identify comparative studies using endoscopic or percutaneous drainage for PFCs. Our primary outcome was clinical success. Secondary outcomes were technical success, adverse events (AE), rates of recurrence, requirement for subsequent procedures, and length of stay in hospital. Pooled risk ratios (RR) and mean difference (MD) were calculated for categorical and continuous outcomes, respectively.

RESULTS

 Seven studies with 490 patients were included in the final analysis. Pooled RR for clinical success was 0.40 (0.26, 0.61), I²  = 42 % in favor of endoscopic management. On sensitivity analysis, after excluding one study on patients with walled-off necrosis (WON), the clinical success was 0.43 (0.28, 0.66) with no heterogeneity. Pooled RR for technical success was 1.50 (0.52, 4.37) with no heterogeneity. Pooled RR for AE and rate of recurrence were 0.77 (0.46, 1.28) and 0.60 (0.29, 1.24), respectively. Pooled MD for length of stay in hospital and rate of re-intervention were - 8.97 (- 12.88, - 5.07) and - 0.66 (- 0.93, - 0.38), respectively, in favor of endoscopic drainage.

CONCLUSIONS

 Endoscopic drainage should be the preferred therapeutic modality for PFCs compared to percutaneous drainage as it is associated with significantly better clinical success, a lower re-intervention rate, and a shorter hospital length of stay.

Robotic versus standard open pancreatectomy: a propensity score-matched analysis comparison

Interest in robotic pancreatectomy has been greatly increasing over the last decade. However, evidence supporting the benefits of robotic over open pancreatectomy is still outstanding. This study aims to assess the safety and efficacy of robotic pancreatectomy compared with the conventional open surgical approach. Propensity score-matched (1:1) was used to balance age, sex, BMI, ASA, tumor size, and malignancy of 17 robotic pancreaticoduodenectomies (PD), 12 pancreatic enucleations (PE), and 28 distal pancreatectomies (DP); and was compared with the open standard approach. Robotic PD was associated with longer operative time (594 vs. 413 min; p = 0.03) and decreased blood loss (190 vs. 394 ml; p = 0.001). Robotic PE showed a lower mean length of hospital stay (8.4 vs. 12.8 days; p = 0.04) and, in addition, robotic DP showed less blood loss (175 vs. 375 ml; p = 0.01), less severe morbidities (7.14 vs. 17.9%; p = 0.02), and a reduced mean length of hospital stay (8.9 vs. 15.1; p = 0.001). Overall, conversion rate was 4 (7%). Robotic pancreatectomy is as safe and effective as the standard open surgical approach with reduced blood loss in PD and DP, length of hospital stay in PE and DP, and severe morbidity in DP.

The impact of unplanned conversion to an open procedure during minimally invasive pancreatectomy

BACKGROUND

Minimally invasive pancreatic resection (MIPR) is being increasingly utilized. Outcomes for patients experiencing unplanned conversion to an open procedure during MIPR have been incompletely assessed. We sought to determine the short-term outcomes and factors associated with unplanned conversion during MIPR.

METHODS

A retrospective cohort study using the American College of Surgeons National Surgical Quality Improvement Program pancreatectomy-targeted data set was conducted. Successful MIPR was compared with unplanned conversion. Propensity matching was used to separately compare unplanned conversion during MIPR with planned open pancreatectomy.

RESULTS

Unplanned conversion occurred in 24.6% of 350 attempted minimally invasive pancreatoduodenectomy (MIPD) and 19.6% of 1174 attempted minimally invasive distal pancreatectomy (MIDP). Conversion was associated with greater overall morbidity and 30-day mortality compared with successful MIPR for both MIPD and MIDP. After matching, unplanned conversion resulted in outcomes equivalent or inferior to open pancreatectomy. Factors significantly associated with unplanned conversion during MIPD included intermediate gland texture, vascular resection, hypertension, disseminated cancer, and chronic steroid use. For MIDP, male sex, hard gland texture, vascular resection, smoking, and recent weight loss were independently associated with conversion. A robotic approach was inversely associated with conversion for MIPD and MIDP.

CONCLUSIONS

Unplanned conversion during MIPR is associated with greater morbidity and 30-day mortality. Conversion resulted in outcomes that, at best, mimicked those of open pancreatectomy. Several risk factors including the need for vascular resection are associated with unplanned conversion and should be acknowledged when planning an operative approach.

Propensity score-matched comparison of oncological outcomes between laparoscopic and open distal pancreatic resection

BACKGROUND

Selected studies have reported improved outcomes in laparoscopic compared with open distal pancreatic resection. Concerns regarding failure to achieve proper oncological resection and compromised long-term outcomes remain. This study investigated whether postoperative outcomes and long-term survival after laparoscopic distal pancreatectomy are comparable to those after an open procedure.

METHODS

This retrospective case-control study included patients who underwent distal pancreatectomy for resectable pancreatic adenocarcinoma between 2010 and 2013, identified from the National Cancer Database. Propensity score nearest-neighbour 1 : 1 matching was performed between patients undergoing laparoscopic or open distal pancreatectomy based on all relevant co-variables. The primary outcome was overall survival.

RESULTS

Of 1947 eligible patients, 605 (31·1 per cent) underwent laparoscopic distal pancreatectomy. After propensity score matching, two well balanced groups of 563 patients each were analysed. There was no difference in overall survival at 3 years after laparoscopic versus open distal pancreatectomy (41·6 versus 36·0 per cent; hazard ratio 0·93, 95 per cent c.i. 0·77 to 1·12; P = 0·457). The overall conversion rate was 27·3 per cent (165 of 605). Patients who underwent laparoscopic distal pancreatectomy had outcomes comparable to those of patients who had an open procedure with regard to median time to chemotherapy (50 versus 50 days; P = 0·342), median number of nodes examined (12 versus 12; P = 0·759); 30-day mortality (1·2 versus 0·9 per cent; P = 0·562); 90-day mortality (2·8 versus 3·7 per cent; P = 0·403), 30-day readmission rate (9·6 versus 9·2 per cent; P = 0·838) and positive margin rate (14·9 versus 18·5 per cent; P = 0·110). However, median duration of hospital stay was shorter in the laparoscopic group (6 versus 7 days; P < 0·001).

CONCLUSION

Laparoscopic distal pancreatectomy is an acceptable alternative to open distal pancreatectomy with no detriment to survival.

Efficacy of octreotide in the prevention of complications after pancreaticoduodenectomy in patients with soft pancreas and non-dilated pancreatic duct: A prospective randomized trial

BACKGROUND

The efficacy of octreotide to prevent postoperative pancreatic fistula (POPF) of pancreaticoduodenectomy (PD) is still controversial. This study aimed to evaluate the effect of postoperative use of octreotide on the outcomes after PD.

METHODS

This is a prospective randomized controlled trial for postoperative use of octreotide in patients undergoing PD. Patients with soft pancreas and pancreatic duct < 3 mm were randomized to 2 groups. Group I did not receive postoperative octreotide. Group II received postoperative octreotide. The primary end of the study is to compare the rate of POPF.

RESULTS

A total of 104 patients were included in the study and were divided into two randomized groups. There were no significant difference in overall complications and its severity. POPF occurred in 11 patients (21.2%) in group I and 10 (19.2%) in group II, without statistical significance (P = 0.807). Also, there was no significant differences between both groups regarding the incidence of biliary leakage (P = 0.083), delayed gastric emptying (P = 0.472), and early postoperative mortality (P = 0.727).

CONCLUSIONS

Octreotide did not reduce postoperative morbidities, reoperation and mortality rate. Also, it did not affect the incidence of POPF and its clinically relevant variants.

The Hand-Assisted Laparoscopic Approach to Resection of Pancreatic Mucinous Cystic Neoplasms: An Underused Technique?

Pancreatic mucinous cystic neoplasms (MCNs) are rare tumors typically of the distal pancreas that harbor malignant potential. Although resection is recommended, data are limited on optimal operative approaches to distal pancreatectomy for MCN. MCN resections (2000–2014; eight institutions) were included. Outcomes of minimally invasive and open MCN resections were compared. A total of 289 patients underwent distal pancreatectomy for MCN: 136(47%) minimally invasive and 153(53%) open. Minimally invasive procedures were associated with smaller MCN size (3.9 vs 6.8 cm; P = 0.001), lower operative blood loss (192 vs 392 mL; P = 0.001), and shorter hospital stay(5 vs 7 days; P = 0.001) compared with open. Despite higher American Society of Anesthesiologists class, hand-assisted (n = 46) had similar advantages as laparoscopic/robotic (n = 76). When comparing hand-assisted to open, although MCN size was slightly smaller (4.1 vs 6.8 cm; P = 0.001), specimen length, operative time, and nodal yield were identical. Similar to laparoscopic/robotic, hand-assisted had lower operative blood loss (161 vs 392 mL; P = 0.001) and shorter hospital stay (5 vs 7 days; P = 0.03) compared with open, without increased complications. Hand-assisted laparoscopic technique is a useful approach for MCN resection because specimen length, lymph node yield, operative time, and complication profiles are similar to open procedures, but it still offers the advantages of a minimally invasive approach. Hand-assisted laparoscopy should be considered as an alternative to open technique or as a successive step before converting from total laparoscopic to open distal pancreatectomy for MCN.

International Summit on Laparoscopic Pancreatic Resection (ISLPR) "Coimbatore Summit Statements"

The International Summit on Laparoscopic Pancreatic Resection (ISLPR) was held in Coimbatore, India, on 7th and 8th of October 2016 and thirty international experts who regularly perform laparoscopic pancreatic resections participated in ISPLR from four continents, i.e., South and North America, Europe and Asia. Prior to ISLPR, the first conversation among the experts was made online on August 26th, 2016 and the structures of ISPLR were developed. The aims of ISPLR were; i) to identify indications and optimal case selection criteria for minimally invasive pancreatic resection (MIPR) in the setting of both benign and malignant diseases; ii) standardization of techniques to increase the safety of MIPR; iii) identification of common problems faced during MIPR and developing associated management strategies; iv) development of clinical protocols to allow early identification of complications and develop the accompanying management plan to minimize morbidity and mortality. As a process for interactive discussion, the experts were requested to complete an online questionnaire consisting of 65 questions about the various technical aspects of laparoscopic pancreatic resections. Two further web-based meetings were conducted prior to ISPLR. Through further discussion during ISPLR, we have created productive statements regarding the topics of Disease, Implementation, Patients, Techniques, and Instrumentations (DIPTI) and hereby publish them as "Coimbatore Summit Statements".

Improved perioperative outcomes of laparoscopic distal pancreatosplenectomy: modified lasso technique

BACKGROUND

Simultaneous division of the splenic artery, splenic vein and pancreatic parenchyma during laparoscopic distal pancreatosplenectomy (LDPS) is known as the lasso technique, which is considered to be simple to perform. However, the original lasso technique carries a risk of post-operative bleeding from the splenic artery. We modified the original lasso technique to improve its technical safety and compared the perioperative outcomes of LDPS performed with the modified lasso technique (ml-LDPS) with those of conventional LDPS (c-LDPS).

METHODS

From August 2006 to July 2016, 30 patients underwent c-LDPS and 31 patients underwent ml-LDPS for distal pancreatectomy involving <50% of the pancreas. The perioperative outcomes of the two groups were compared.

RESULTS

The ml-LDPS technique resulted in a shorter operation time (201 min versus 162 min, P < 0.01), less intraoperative blood loss (20 mL versus 200 mL, P < 0.01), a shorter post-operative hospital stay (8.0 days versus 12.5 days, P < 0.01), and a lower incidence of clinically relevant post-operative pancreatic fistulas (6.5% versus 26.7%, P = 0.04) compared with c-LDPS. The surgical approach (c-LDPS or ml-LDPS) was identified as an independent predictor of the development of clinically relevant post-operative pancreatic fistulas via multivariate analysis.

CONCLUSION

The ml-LDPS method had beneficial effects on the operation time, intraoperative bleeding, the post-operative morbidity rate and the length of the post-operative hospital stay. The ml-LDPS procedure is a simple, safe and effective way of performing planned LDPS.

Experience-based surgical approach to pancreatic mucinous cystic neoplasms with ovarian-type stroma

The present study aimed to elucidate the clinicopathological characteristics of resected mucinous cystic neoplasm (MCN) with ovarian-type stroma and identify a surgical approach for MCN treatment, on the basis of Republic of Korean (Yonsei University College of Medicine, Seoul, South Korea) and Japanese (Nippon Medical School, Tokyo, Japan) bi-institutional collaboration. The present study retrospectively reviewed 55 MCNs with ovarian-type stroma using pathological re-examination. Clinicopathological features and preoperative clinical parameters were evaluated to predict malignant alterations in MCNs. The proportion of surgically treated MCNs has recently been increasing. All patients included in the present study were female, with a mean age of 47.9±13.3 years. Mural nodules were noted in 8 patients (14.5%) and the mean cyst size was 6.1±4.2 cm. A total of 9 patients (16.4%) were identified to exhibit non-invasive mucinous cystadenocarcinoma. The number of patients with small tumors (R²=-0.079, P=0.038) and asymptomatic pancreatic MCNs (P=0.022) was significantly increased (P<0.05), which resulted in the more frequent application of minimally invasive surgery (P<0.001). During the follow-up period (mean, 51.6 months; range, 1.1-242.8 months), no recurrence or tumor-associated mortality was identified. The presence of mural nodules (P=0.002) and a tumor size ≥4.5 cm (P=0.027) were identified as potential clinical parameters for predicting malignant transformation. The significance of mural nodules in predicting malignant transformation was increased in large MCNs (≥4.5 cm) of the pancreas compared with small MCNs (<4.5 cm) (P=0.002). Overall, non-invasive pancreatic MCNs are not aggressive, and minimally invasive pancreatectomy may be an effective approach for suitable patients.