Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis

Background Pancreatic surgery is regarded as the only curative treatment for pancreatic cancer (PC). As the neoadjuvant therapy is applied widely nowadays, the proportion of patients with PC undergoing surgery also with locally advanced tumour findings has increased accordingly. Especially in these...

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Main Authors: Thilo Hackert, Pascal Probst, Eva Kalkum, Kongyuan Wei, Rosa Klotz, Magdalena Holze
Format: Article
Language:English
Published: BMJ Publishing Group 2022-09-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/12/9/e059977.full
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author Thilo Hackert
Pascal Probst
Eva Kalkum
Kongyuan Wei
Rosa Klotz
Magdalena Holze
author_facet Thilo Hackert
Pascal Probst
Eva Kalkum
Kongyuan Wei
Rosa Klotz
Magdalena Holze
author_sort Thilo Hackert
collection DOAJ
description Background Pancreatic surgery is regarded as the only curative treatment for pancreatic cancer (PC). As the neoadjuvant therapy is applied widely nowadays, the proportion of patients with PC undergoing surgery also with locally advanced tumour findings has increased accordingly. Especially in these situations, a radical resection of all tumour tissues is challenging. A novel surgical strategy has been introduced recently to achieve this aim, namely the TRIANGLE operation which comprises the radical resection of all nerve and lymphatic tissue between coeliac artery, superior mesenteric artery and mesenteric–portal axis without including extended lymphadenectomy outside this area. Due to currently published studies, Triangle Operation is a safe and feasible procedure. However, this has not been systematically analysed to date. This systematic review and meta-analysis aim to evaluate surgical and postoperative outcomes of Triangle Operation in pancreatic surgery.Methods and analysis Pubmed, Web of Science and Cochrane Central Register of Controlled Trials in the Cochrane Library will be searched from inception until 31 December 2022. This study will include all articles comparing Triangle Operation versus non-Triangle Operation in pancreatic surgery to assess outcomes. The primary endpoints will be R0 resection rate and 1-year overall survival. The secondary endpoints will be delayed gastric emptying, postoperative pancreatic fistula, post pancreatectomy haemorrhages and reoperation incidence, overall complications, mortality and 3-year overall survival. The study selection, study quality assessment, data extraction and critical appraisal will be carried out by two reviewers. Inter-reviewer disagreements will be evaluated by discussion with a third reviewer. Besides, a subgroup analysis will be conducted focused on robotic surgery, laparoscopic surgery and open surgery in detail. Additionally, the Grading of Recommendations, Assessment, Development and Evaluations framework will be performed to evaluate the strength of evidence.Ethics and dissemination This systematic review and meta-analysis will not require ethical approval. Results will be published in a peer-reviewed scientific journal.PROSPERO registration number CRD42021234721.
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spelling doaj.art-20b9e45a50dd4fe88cf15e7163463eef2022-12-22T01:48:26ZengBMJ Publishing GroupBMJ Open2044-60552022-09-0112910.1136/bmjopen-2021-059977Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysisThilo Hackert0Pascal Probst1Eva Kalkum2Kongyuan Wei3Rosa Klotz4Magdalena Holze5Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, GermanyDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, GermanyThe Study Center of the German Surgical Society (SDGC), University of Heidelberg, Heidelberg, GermanyDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, GermanyDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, GermanyDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, GermanyBackground Pancreatic surgery is regarded as the only curative treatment for pancreatic cancer (PC). As the neoadjuvant therapy is applied widely nowadays, the proportion of patients with PC undergoing surgery also with locally advanced tumour findings has increased accordingly. Especially in these situations, a radical resection of all tumour tissues is challenging. A novel surgical strategy has been introduced recently to achieve this aim, namely the TRIANGLE operation which comprises the radical resection of all nerve and lymphatic tissue between coeliac artery, superior mesenteric artery and mesenteric–portal axis without including extended lymphadenectomy outside this area. Due to currently published studies, Triangle Operation is a safe and feasible procedure. However, this has not been systematically analysed to date. This systematic review and meta-analysis aim to evaluate surgical and postoperative outcomes of Triangle Operation in pancreatic surgery.Methods and analysis Pubmed, Web of Science and Cochrane Central Register of Controlled Trials in the Cochrane Library will be searched from inception until 31 December 2022. This study will include all articles comparing Triangle Operation versus non-Triangle Operation in pancreatic surgery to assess outcomes. The primary endpoints will be R0 resection rate and 1-year overall survival. The secondary endpoints will be delayed gastric emptying, postoperative pancreatic fistula, post pancreatectomy haemorrhages and reoperation incidence, overall complications, mortality and 3-year overall survival. The study selection, study quality assessment, data extraction and critical appraisal will be carried out by two reviewers. Inter-reviewer disagreements will be evaluated by discussion with a third reviewer. Besides, a subgroup analysis will be conducted focused on robotic surgery, laparoscopic surgery and open surgery in detail. Additionally, the Grading of Recommendations, Assessment, Development and Evaluations framework will be performed to evaluate the strength of evidence.Ethics and dissemination This systematic review and meta-analysis will not require ethical approval. Results will be published in a peer-reviewed scientific journal.PROSPERO registration number CRD42021234721.https://bmjopen.bmj.com/content/12/9/e059977.full
spellingShingle Thilo Hackert
Pascal Probst
Eva Kalkum
Kongyuan Wei
Rosa Klotz
Magdalena Holze
Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis
BMJ Open
title Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis
title_full Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis
title_fullStr Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis
title_full_unstemmed Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis
title_short Safety and efficacy of TRIANGLE operation applied in pancreatic surgery: a protocol of the systematic review and meta-analysis
title_sort safety and efficacy of triangle operation applied in pancreatic surgery a protocol of the systematic review and meta analysis
url https://bmjopen.bmj.com/content/12/9/e059977.full
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