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OUP accepted manuscript. Br J Surg 2022; 109:363-371. [DOI: 10.1093/bjs/znab473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/16/2021] [Accepted: 12/22/2021] [Indexed: 11/14/2022]
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Zakharova MA, Kriger AG, Karmazanovsky GG, Kondratyev EV, Kalinin DV, Glotov AV. [Effect of morphological state of pancreatic parenchyma on the long-term outcome of surgery for chronic pancreatitis]. Khirurgiia (Mosk) 2021:42-49. [PMID: 33977697 DOI: 10.17116/hirurgia202105142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To determine the effect of baseline morphological state of the pancreas on the long-term outcomes of duodenum-preserving pancreatic head resection (DPPHR). MATERIAL AND METHODS The study included 104 patients with chronic pancreatitis (CP), who underwent DPPHR in 2014-2019. Pain syndrome, exocrine and endocrine pancreatic insufficiency and quality of life (QoL) were assessed in long-term postoperative period. Patients were stratified depending on CT enhancement of pancreatic parenchyma as an indicator of fibrosis and amount of preserved acinar cells in resected pancreatic tissue. RESULTS. S Ignificant relief of pain syndrome in long-term period was observed in patients with higher density of pancreatic tissue in venous phase of CT compared to delayed phase. Moreover, these patients needed less additional enzyme intake and had higher QoL. Exocrine insufficiency depended on the number of preserved acinar cells. The percentage of preserved acinar cells also affects the QoL of patients with CP. There were no correlations between endocrine insufficiency and CT-findings, as well as the number of preserved acinar cells. CONCLUSION Higher CT-density of pancreatic parenchyma in venous phase indicates a lesser degree of fibrosis. It is a favorable prognostic factor for postoperative pain relief and preservation of exocrine function. The percentage of preserved acinar cells in the resected pancreatic tissue is a reliable predictor of exocrine insufficiency.
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Affiliation(s)
- M A Zakharova
- Vishnevsky National Medical Research Center of Surgery, Moscow, Russia
| | - A G Kriger
- Vishnevsky National Medical Research Center of Surgery, Moscow, Russia.,Russian Medical Academy of Continuous Professional Education, Moscow, Russia
| | - G G Karmazanovsky
- Vishnevsky National Medical Research Center of Surgery, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia
| | - E V Kondratyev
- Vishnevsky National Medical Research Center of Surgery, Moscow, Russia
| | - D V Kalinin
- Vishnevsky National Medical Research Center of Surgery, Moscow, Russia
| | - A V Glotov
- Vishnevsky National Medical Research Center of Surgery, Moscow, Russia
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Morphologic Factors Predict Pain Relief Following Pancreatic Head Resection in Chronic Pancreatitis Description of the Chronic Pancreatitis Pain Relief (CPPR) Score. Ann Surg 2021; 273:800-805. [PMID: 31348039 DOI: 10.1097/sla.0000000000003439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE This study analyzes the clinicopathologic findings and their impact on outcome of patients so as to identify which patients benefit most from surgical treatment in chronic pancreatitis, especially in regard to pain relief. SUMMARY BACKGROUND DATA The predominant symptom of chronic pancreatitis is chronic pain resulting in reduced quality of life. It is well known that the main reason for development of the disease is abuse of alcohol and nicotine, but only little data on factors influencing outcome are available. METHODS One thousand one hundred forty-six consecutive patients who underwent surgery for chronic pancreatitis were included. Clinicopathologic data, including morphology of the pancreas in preoperative diagnostics and the histopathologic results, were evaluated. A long-term follow-up including Quality of Life and pain scores was performed. Additionally, we describe the novel Chronic Pancreatitis Pain Relief Score (CPPR-Score) as a tool for prediction of pain relief. RESULTS Overall the rate of pain relief was 79.8% after surgery. The presence of an inflammatory mass in the pancreatic head larger than 4 cm (P < 0.001), presence of a dilated main pancreatic duct of over 4 mm (P < 0.001), histopathologically detected severe calcifications (P = 0.001) and severe fibrosis (P < 0.001) as well as ethanol induced disease (P < 0.001) found to be strong independent prognostic factors for pain relief. The CPPR-Score (0-5 points) proved to be a very good predictive score for pain-relief (P < 0.001). CONCLUSIONS The rate of pain relief after surgical treatment in chronic pancreatitis is high and the commonly used procedures can be performed with acceptable morbidity and mortality. The Chronic Pancreatitis Pain Relief Score allows identifying patients who will benefit most from surgery.
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Baltatzis M, Jegatheeswaran S, Siriwardena AK. Reporting of longitudinal pancreatojejunostomy with partial pancreatic head resection (the Frey procedure) for chronic pancreatitis: A systematic review. Hepatobiliary Pancreat Dis Int 2021; 20:110-116. [PMID: 33637453 DOI: 10.1016/j.hbpd.2021.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 02/09/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Longitudinal pancreatojejunostomy with partial pancreatic head resection (the Frey procedure) is accepted for surgical treatment of painful chronic pancreatitis. However, conduct and reporting are not standardized and thus, making comparisons difficult. This study assesses the reporting standards of this procedure. DATA SOURCES A systematic literature review was performed between January 1987 and January 2020. The keyword and Medical Subject Heading "chronic pancreatitis" was used together with the individual operation term "Frey pancreatojejunostomy". Reports were included if they provided original information on conduct and outcome. Thirty-three papers providing information on 1205 patients constituted the study population. Risk of bias in included reports was assessed. RESULTS Etiology of chronic pancreatitis (alcohol) was reported in 26 of 28 (93%) studies, duration of symptoms prior to surgery in 19 (58%) studies and pre-operative opiate use in 12 (36%) studies. In terms of morphology, pancreatic duct diameter was reported in 17 (52%) studies and diameter of the pancreatic head in 13 (39%) studies. In terms of technique, three (9%) studies reported weight of excised parenchyma. There were 9 (0.7%) procedure-related deaths. Post-operative follow-up ranged from 6 to 82.5 months. No studies reported post-operative portal hypertension. CONCLUSIONS There is substantial heterogeneity between studies in reporting of clinical baseline, morphology of the diseased pancreas, operative detail and outcome after longitudinal pancreatojejunostomy with partial pancreatic head resection. This critically compromises the comparison between centers and between surgeons. Structured reporting is necessary for clinicians to assess choice of procedure and for patients to make informed choices when seeking treatment for painful chronic pancreatitis.
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Affiliation(s)
- Minas Baltatzis
- Regional Hepato-Pancreato-Biliary Surgery Unit, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK
| | - Santhalingam Jegatheeswaran
- Regional Hepato-Pancreato-Biliary Surgery Unit, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK
| | - Ajith K Siriwardena
- Regional Hepato-Pancreato-Biliary Surgery Unit, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK; Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
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Kempeneers MA, Issa Y, Ali UA, Baron RD, Besselink MG, Büchler M, Erkan M, Fernandez-Del Castillo C, Isaji S, Izbicki J, Kleeff J, Laukkarinen J, Sheel ARG, Shimosegawa T, Whitcomb DC, Windsor J, Miao Y, Neoptolemos J, Boermeester MA. International consensus guidelines for surgery and the timing of intervention in chronic pancreatitis. Pancreatology 2020; 20:149-157. [PMID: 31870802 DOI: 10.1016/j.pan.2019.12.005] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 12/03/2019] [Accepted: 12/11/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND/OBJECTIVES Chronic pancreatitis (CP) is a complex inflammatory disease with pain as the predominant symptom. Pain relief can be achieved using invasive interventions such as endoscopy and surgery. This paper is part of the international consensus guidelines on CP and presents the consensus guideline for surgery and timing of intervention in CP. METHODS An international working group with 15 experts on CP surgery from the major pancreas societies (IAP, APA, JPS, and EPC) evaluated 20 statements generated from evidence on 5 questions deemed to be the most clinically relevant in CP. The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach was used to evaluate the level of evidence available for each statement. To determine the level of agreement, the working group voted on the 20 statements for strength of agreement, using a nine-point Likert scale in order to calculate Cronbach's alpha reliability coefficient. RESULTS Strong consensus was obtained for the following statements: Surgery in CP is indicated as treatment of intractable pain and local complications of adjacent organs, and in case of suspicion of malignant (cystic) lesion; Early surgery is favored over surgery in a more advanced stage of disease to achieve optimal long-term pain relief; In patients with an enlarged pancreatic head, a combined drainage and resection procedure, such as the Frey, Beger, and Berne procedure, may be the treatment of choice; Pancreaticoduodenectomy is the most suitable surgical option for patients with groove pancreatitis; The risk of pancreatic carcinoma in patients with CP is too low (2% in 10 year) to recommend active screening or prophylactic surgery; Patients with hereditary CP have such a high risk of pancreatic cancer that prophylactic resection can be considered (lifetime risk of 40-55%). Weak agreement for procedure choice in patients with dilated duct and normal size pancreatic head: both the extended lateral pancreaticojejunostomy and Frey procedure seems to provide equivalent pain control in patients. CONCLUSIONS This international expert consensus guideline provides evidenced-based statements concerning key aspects in surgery and timing of intervention in CP. It is meant to guide clinical practitioners and surgeons in the treatment of patients with CP.
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Affiliation(s)
- M A Kempeneers
- Department of Surgery, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Y Issa
- Department of Surgery, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - U Ahmed Ali
- Department of Surgery, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands; Department of Surgery, St. Antonius Hospital, Nieuwegein, the Netherlands
| | - R D Baron
- Department of Surgery, Royal Liverpool University Hospital, Liverpool, United Kingdom
| | - M G Besselink
- Department of Surgery, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - M Büchler
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - M Erkan
- Department of Surgery, Koc University, Istanbul, Turkey
| | | | - S Isaji
- Department of Hepatobiliary Pancreatic and Transplant Surgery, Mie University Graduate School of Medicine, Japan
| | - J Izbicki
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Germany
| | - J Kleeff
- Department of Visceral, Vascular, and Endocrine Surgery, Martin Luther University Halle-Wittenberg, Germany
| | - J Laukkarinen
- Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Faculty of Medicine and Health Technology, Tampere University, Finland
| | - A R G Sheel
- Institute of Translational Medicine, University of Liverpool, United Kingdom
| | - T Shimosegawa
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - D C Whitcomb
- Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh and UPMC, PA, USA
| | - J Windsor
- HBP/Upper GI Unit, Auckland City Hospital/Department of Surgery, University of Auckland, New Zealand
| | - Y Miao
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, China
| | - J Neoptolemos
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - M A Boermeester
- Department of Surgery, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands.
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Abstract
The selection of optimum surgical procedure from the range of reported operations for chronic pancreatitis (CP) can be difficult. The aim of this study is to explore geographical variation in reporting of elective surgery for CP. A systematic search of the literature was performed using the Scopus database for reports of five selected procedures for CP: duodenum-preserving pancreatic head resection, total pancreatectomy with islet autotransplantation (TPIAT), Frey pancreaticojejunostomy, thoracoscopic splanchnotomy and the Izbicki V-shaped resection. The keyword and MESH heading 'chronic pancreatitis' was used. Overall, 144 papers met inclusion criteria and were utilized for data extraction. There were 33 reports of duodenum-preserving pancreatic head resection. Twenty-one (64%) were from Germany. There were 60 reports of TPIAT, 53 (88%) from the USA. There are only two reports of TPIAT from outwith the USA and UK. The 34 reports of the Frey pancreaticojejunostomy originate from 12 countries. There were 20 reports of thoracoscopic splanchnotomy originating from nine countries. All three reports of the Izbicki 'V' procedure are from Germany. There is geographical variation in reporting of surgery for CP. There is a need for greater standardization in the selection and reporting of surgery for patients with painful CP.
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Sinha A, Patel YA, Cruise M, Matsukuma K, Zaheer A, Afghani E, Yadav D, Makary MA, Hirose K, Andersen DK, Singh VK. Predictors of Post-Operative Pain Relief in Patients with Chronic Pancreatitis Undergoing the Frey or Whipple Procedure. J Gastrointest Surg 2016; 20:734-40. [PMID: 26813017 DOI: 10.1007/s11605-016-3081-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 01/12/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND Post-operative pain relief in chronic pancreatitis (CP) is variable. Our objective was to determine clinical imaging or histopathologic predictor(s) of post-operative pain relief in CP patients undergoing the Whipple or Frey procedure. METHODS All patients who underwent a Whipple (n = 30) or Frey procedure (n = 30) for painful CP between January 2003 and September 2013 were evaluated. A toxic etiology was defined as a history of alcohol use and/or smoking. The pre-operative abdominal CT was evaluated for calcification(s) and main pancreatic duct (MPD) dilation (≥5 mm). The post-operative histopathology was evaluated for severe fibrosis. Clinical imaging and histopathologic features were evaluated as predictors of post-operative pain relief using univariable and multivariable regression analysis. RESULTS A total of 60 patients (age 51.6 years, 53% males) were included in our study, of whom 42 (70%) reported post-operative pain relief over a mean follow-up of 1.1 years. There were 37 (62%) patients with toxic etiology, 36 (60%) each with calcification(s) and MPD dilation. A toxic etiology, calcifications, and severe fibrosis were associated with post-operative pain relief on univariable analysis (all p < 0.01). However, only a toxic etiology was an independent predictor of post-operative pain relief (OR 5.7, 95% CI 1.3, 24.5, p = 0.02). CONCLUSION Only a toxic etiology, and not imaging or histopathologic findings, independently predicts post-operative pain relief in CP patients undergoing the Whipple or Frey procedure.
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Affiliation(s)
- Amitasha Sinha
- Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Yuval A Patel
- Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Michael Cruise
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Karen Matsukuma
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Atif Zaheer
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Pancreatitis Center, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Elham Afghani
- Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Dhiraj Yadav
- Division of Gastroenterology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Martin A Makary
- Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Pancreatitis Center, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Kenzo Hirose
- Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Pancreatitis Center, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Dana K Andersen
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Vikesh K Singh
- Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, MD, USA. .,Pancreatitis Center, Johns Hopkins Medical Institutions, Baltimore, MD, USA.
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Anderson MA, Akshintala V, Albers KM, Amann ST, Belfer I, Brand R, Chari S, Cote G, Davis BM, Frulloni L, Gelrud A, Guda N, Humar A, Liddle RA, Slivka A, Gupta RS, Szigethy E, Talluri J, Wassef W, Wilcox CM, Windsor J, Yadav D, Whitcomb DC. Mechanism, assessment and management of pain in chronic pancreatitis: Recommendations of a multidisciplinary study group. Pancreatology 2016; 16:83-94. [PMID: 26620965 PMCID: PMC4761301 DOI: 10.1016/j.pan.2015.10.015] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 10/29/2015] [Accepted: 10/31/2015] [Indexed: 12/11/2022]
Abstract
DESCRIPTION Pain in patients with chronic pancreatitis (CP) remains the primary clinical complaint and source of poor quality of life. However, clear guidance on evaluation and treatment is lacking. METHODS Pancreatic Pain working groups reviewed information on pain mechanisms, clinical pain assessment and pain treatment in CP. Levels of evidence were assigned using the Oxford system, and consensus was based on GRADE. A consensus meeting was held during PancreasFest 2012 with substantial post-meeting discussion, debate, and manuscript refinement. RESULTS Twelve discussion questions and proposed guidance statements were presented. Conference participates concluded: Disease Mechanism: Pain etiology is multifactorial, but data are lacking to effectively link symptoms with pathologic feature and molecular subtypes. Assessment of Pain: Pain should be assessed at each clinical visit, but evidence to support an optimal approach to assessing pain character, frequency and severity is lacking. MANAGEMENT There was general agreement on the roles for endoscopic and surgical therapies, but less agreement on optimal patient selection for medical, psychological, endoscopic, surgical and other therapies. CONCLUSIONS Progress is occurring in pain biology and treatment options, but pain in patients with CP remains a major problem that is inadequately understood, measured and managed. The growing body of information needs to be translated into more effective clinical care.
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Affiliation(s)
| | | | - Kathryn M Albers
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Inna Belfer
- Department of Anesthesiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Randall Brand
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Suresh Chari
- Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Greg Cote
- Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Brian M Davis
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Luca Frulloni
- Department of Medicine, University of Verona, Verona, Italy
| | - Andres Gelrud
- Department of Medicine, University of Chicago, Chicago, IL, USA
| | - Nalini Guda
- Department of Gastroenterology, Aurora St. Luke's Medical Center, Milwaukee, WI, USA
| | - Abhinav Humar
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Adam Slivka
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Eva Szigethy
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jyothsna Talluri
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Wahid Wassef
- Department of Medicine, University of Massachusetts, Worcester, MA, USA
| | - C Mel Wilcox
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - John Windsor
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - Dhiraj Yadav
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - David C Whitcomb
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Cell Biology & Molecular Physiology, University of Pittsburgh, Pittsburgh, PA, USA; Department of Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA.
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Sinha A, Singh VK, Cruise M, Afghani E, Matsukuma K, Ali S, Andersen DK, Makary MA, Raman SP, Fishman EK, Zaheer A. Abdominal CT predictors of fibrosis in patients with chronic pancreatitis undergoing surgery. Eur Radiol 2014; 25:1339-46. [DOI: 10.1007/s00330-014-3526-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/28/2014] [Accepted: 11/19/2014] [Indexed: 12/22/2022]
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Roch A, Teyssedou J, Mutter D, Marescaux J, Pessaux P. Chronic pancreatitis: A surgical disease? Role of the Frey procedure. World J Gastrointest Surg 2014; 6:129-135. [PMID: 25068010 PMCID: PMC4110530 DOI: 10.4240/wjgs.v6.i7.129] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 04/26/2014] [Accepted: 07/14/2014] [Indexed: 02/06/2023] Open
Abstract
Although medical treatment and endoscopic interventions are primarily offered to patients with chronic pancreatitis, approximately 40% to 75% will ultimately require surgery during the course of their disease. Although pancreaticoduodenectomy has been considered the standard surgical procedure because of its favorable results on pain control, its high postoperative complication and pancreatic exocrine or/and endocrine dysfunction rates have led to a growing enthusiasm for duodenal preserving pancreatic head resection. The aim of this review is to better understand the rationale underlying of the Frey procedure in chronic pancreatitis and to analyze its outcome. Because of its hybrid nature, combining both resection and drainage, the Frey procedure has been conceptualized based on the pathophysiology of chronic pancreatitis. The short and long-term outcome, especially pain relief and quality of life, are better after the Frey procedure than after any other surgical procedure performed for chronic pancreatitis.
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