Pancreatectomy combined with multivisceral resection for pancreatic malignancies: is it justified? Results of a systematic review.

BACKGROUND: Multivisceral resections combined with pancreatectomy have been proposed in selected patients with tumor invasion into adjacent organs, in order to allow complete tumor resection. Some authors have also reported multivisceral resection combined with metastasectomy in very selected cases. The utility of this practice is debated. The aim of the review is to compare the postoperative results and survival of pancreatectomies combined with multivisceral resections with those of standard pancreatectomies. METHODS: A systematic literature search was performed to identify all studies published up to February 2017 that analyzed data of patients undergoing multivisceral and standard pancreatectomies. Clinical effectiveness was synthetized through a narrative review with full tabulation of results. RESULTS: Three studies were retrieved, including 713 (80%) patients undergoing standard pancreatectomies and 176 (20%) undergoing multivisceral resections (MVR). Postoperative morbidity ranged from 37% to 50% after standard resections and from 56% to 69% after MVR. In-hospital mortality ranged from 4% after standard pancreatectomies to 10% after MVR. Median survival ranged from 20 to 23 months in standard resections and from 12 to 20 months after MVR, without significant differences. DISCUSSION: The current literature suggests that multivisceral pancreatectomies are feasible and may increase the number of completely resected patients. Morbidity and mortality are higher than after standard pancreatectomies, and these procedures should be reserved to selected patients in referral centers. Further studies on the role of neoadjuvant therapy in this setting are advisable.

Frozen section analysis of the pancreatic margin during pancreaticoduodenectomy for cancer: Does extending the resection to obtain a secondary R0 provide a survival benefit? Results of a systematic review.

BACKGROUND: During pancreaticoduodenectomy, frozen section pancreatic margin analysis permits to extend the resection in case of a positive margin, to achieve R0 margin. We aim to assess if patients having an R0 margin following the extension of the pancreatectomy after a positive frozen section (secondary R0) have different survival compared to those with R1 resection or primary R0 resection. METHODS: A systematic search was performed to identify all studies published up to March 2016 analyzing the survival of patients undergoing pancreaticoduodenectomy according to the results of frozen section pancreatic margin examination. Clinical effectiveness was synthetized through a narrative review with full tabulation of results. RESULTS: Four studies published between 2010 and 2014 were retrieved, including 2580 patients. A primary R0 resection was obtained in a percentage of patients ranging from 36.2% to 85.5%, whereas secondary R0 in 9.4%-57.8% of cases and R1 in 5.1%-9.2%. Median survival ranged from 19 to 29 months in R0 patients, from 11.9 to 18 months in secondary R0, and from 12 to 23 months in R1 patients. None of the study demonstrated a survival benefit of extending the resection to obtain a secondary R0 pancreatic margin. CONCLUSIONS: All the studies were concordant, and failed to demonstrate the survival benefit of additional pancreatic resection to obtain a secondary R0. However, inadequate surgery should not be advocated. This review suggests that re-resection of the pancreatic margin may have limited impact on patients' survival.

Total Pancreatectomy for Pancreatic Carcinoma: When, Why, and What Are the Outcomes? Results of a Systematic Review.

The role of total pancreatectomy (TP) to treat pancreatic carcinoma is still debated. The aims of this study were to systematically review the previous literature and to summarize the indications and results of TP for pancreatic carcinoma. A systematic search was performed to identify all studies published up to November 2018 analyzing the survival of patients undergoing TP for pancreatic carcinoma. Clinical effectiveness was synthetized through a narrative review with full tabulation of results. Six studies published between 2009 and 2016 were retrieved, including 316 patients. The major indication was positive pancreatic margin at frozen section during partial pancreatectomy. The overall morbidity ranged from 36% to 69%, and mortality from 0% to 27%. Overall survival ranged from 52.7% to 67% at 1 year, from 20% to 42% at 3 years of follow-up, whereas the 5-year estimated overall survival ranged from 4.5% to 21.9%. Total pancreatectomy has an important role in the armamentarium of pancreatic surgeons. Postoperative morbidity and mortality are not negligible, but a trend for better postoperative outcomes in recent years is noticed. Mortality related to difficult glycemic control is rare. Long-term survival is comparable with survival after partial pancreatectomy for carcinoma.