1
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Gudmundsdottir H, Fogliati A, Grotz TE, Thiels CA, Warner SG, Smoot RL, Truty MJ, Kendrick ML, Nagorney DM, Halfdanarson TR, Cleary SP, Starlinger P. Value of Surgical Cytoreduction in Patients with Small Intestinal Neuroendocrine Tumors Metastatic to the Liver and Peritoneum. Ann Surg Oncol 2024; 31:5370-5376. [PMID: 38689169 DOI: 10.1245/s10434-024-15316-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 04/01/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND Cytoreductive hepatectomy can improve survival and symptoms of hormonal excess in patients with small intestinal neuroendocrine tumor (siNET) liver metastases, but whether to proceed when peritoneal metastases are encountered at the time of planned cytoreductive hepatectomy is controversial. METHODS This was a retrospective review of patients who underwent surgical management of metastatic siNETs at Mayo Clinic between 2000 and 2020. Patients who underwent cytoreductive operation for isolated liver metastases or both liver and peritoneal metastases were compared. RESULTS Of 261 patients who underwent cytoreductive operation for siNETs, 211 had isolated liver metastases and 50 had liver and peritoneal metastases. Complete cytoreduction was achieved in 78% of patients with isolated liver metastases and 56% of those with liver and peritoneal metastases (p = 0.002). After complete cytoreduction, median overall survival (OS) was 11.5 years for isolated liver metastases and 11.2 years for liver and peritoneal metastases (p = 0.10), and relief of carcinoid syndrome was ≥ 97% in both groups. After incomplete cytoreduction with debulking of > 90% of hepatic disease and/or closing Lyon score of 1-2, median OS was 6.4 years for isolated liver metastases and 7.1 years for liver and peritoneal metastases (p = 0.12). CONCLUSIONS Patients with siNETs metastatic to both the liver and peritoneum have favorable outcomes after aggressive surgical cytoreduction, with the best outcomes observed after complete cytoreduction. Therefore, the presence of peritoneal metastases should not by itself preclude surgical cytoreduction in this population.
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Affiliation(s)
| | | | | | | | | | - Rory L Smoot
- Department of Surgery, Mayo Clinic, Rochester, MN, USA
| | - Mark J Truty
- Department of Surgery, Mayo Clinic, Rochester, MN, USA
| | | | | | | | - Sean P Cleary
- Department of Surgery, Mayo Clinic, Rochester, MN, USA
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2
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Van Den Heede K, van Beek DJ, Van Slycke S, Borel Rinkes I, Norlén O, Stålberg P, Nordenström E. Surgery for advanced neuroendocrine tumours of the small bowel: recommendations based on a consensus meeting of the European Society of Endocrine Surgeons (ESES). Br J Surg 2024; 111:znae082. [PMID: 38626261 DOI: 10.1093/bjs/znae082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/19/2024] [Accepted: 03/04/2024] [Indexed: 04/18/2024]
Abstract
BACKGROUND Small bowel neuroendocrine tumours often present with locally advanced or metastatic disease. The aim of this paper is to provide evidence-based recommendations regarding (controversial) topics in the surgical management of advanced small bowel neuroendocrine tumours. METHODS A working group of experts was formed by the European Society of Endocrine Surgeons. The group addressed 11 clinically relevant questions regarding surgery for advanced disease, including the benefit of primary tumour resection, the role of cytoreduction, the extent of lymph node clearance, and the management of an unknown primary tumour. A systematic literature search was performed in MEDLINE to identify papers addressing the research questions. Final recommendations were presented and voted upon by European Society of Endocrine Surgeons members at the European Society of Endocrine Surgeons Conference in Mainz in 2023. RESULTS The literature review yielded 1223 papers, of which 84 were included. There were no randomized controlled trials to address any of the research questions and therefore conclusions were based on the available case series, cohort studies, and systematic reviews/meta-analyses of the available non-randomized studies. The proposed recommendations were scored by 38-51 members and rated 'strongly agree' or 'agree' by 64-96% of participants. CONCLUSION This paper provides recommendations based on the best available evidence and expert opinion on the surgical management of locally advanced and metastatic small bowel neuroendocrine tumours.
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Affiliation(s)
- Klaas Van Den Heede
- Department of General and Endocrine Surgery, Onze-Lieve-Vrouw (OLV) Hospital Aalst-Asse-Ninove, Aalst, Belgium
| | - Dirk-Jan van Beek
- Department of Endocrine Surgical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sam Van Slycke
- Department of General and Endocrine Surgery, Onze-Lieve-Vrouw (OLV) Hospital Aalst-Asse-Ninove, Aalst, Belgium
- Department of General Surgery, AZ Damiaan, Ostend, Belgium
- Department of Head and Skin, University Hospital Ghent, Ghent, Belgium
| | - Inne Borel Rinkes
- Department of Endocrine Surgical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Olov Norlén
- Department of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - Peter Stålberg
- Department of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - Erik Nordenström
- Department of Surgery, Skåne University Hospital, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
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3
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Søreide K, Stättner S, Hallet J. Surgery as a Principle and Technical Consideration for Primary Tumor Resection of Small Bowel Neuroendocrine Tumors. Ann Surg Oncol 2024; 31:1125-1137. [PMID: 38006527 PMCID: PMC10761444 DOI: 10.1245/s10434-023-14610-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/31/2023] [Indexed: 11/27/2023]
Abstract
Small bowel neuroendocrine tumors (SB-NETs) are increasingly identified and have become the most frequent entity among small bowel tumors. An increasing incidence, a high prevalence, and a prolonged survival with optimal modern multidisciplinary management makes SB-NETs a unique set of tumors to consider for surgical oncologists. The major goals of surgical treatment in the setting of SB-NET include control of tumor volume, control of endocrine secretion, and prevention of locoregional complications. Key considerations include assessment of multifocality and resection of mesenteric nodal masses with the use of mesenteric-sparing approaches and acceptance of R1 margins if necessary to clear disease while avoiding short bowel syndrome. A description through eight steps for consideration is presented to allow for systematic surgical planning and execution of resection. Moreover, some controversies and evolving considerations to the surgical principles and technical procedures remain. The role of primary tumor resection in the presence of (unresectable) liver metastasis is still unclear. Reports of feasibility of minimally invasive surgery are emerging, with undetermined selection criteria for appropriateness or long-term outcomes. Resection of SB-NETs should be considered in all patients fit for surgery and should follow principles to achieve surgical oncological control that is appropriate for the stage and tumor burden, considering the age and comorbidity of the individual patient.
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Affiliation(s)
- Kjetil Søreide
- Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway.
- Gastrointestinal Translational Research Group, Laboratory for Molecular Medicine, Stavanger University Hospital, Stavanger, Norway.
- Department of Clinical Medicine, University of Bergen, Bergen, Norway.
| | - Stefan Stättner
- Department of General, Visceral and Vascular Surgery, Vöcklabruck, Austria
| | - Julie Hallet
- Department of Surgery, University of Toronto, Toronto, ON, Canada
- Susan Leslie Clinic for Neuroendocrine Tumors - Sunnybrook Health Sciences Centre, Toronto, ON, Canada
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4
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Jiao F, Cui J, Fu D, Li Q, Wu Z, Teng Z, Zhang H, Zhou J, Zhang Z, Chen X, Zhou Y, Li Y, Mou Y, Qin R, Sun Y, Jin G, Cheng Y, Wang J, Ren G, Yue J, Jin G, Xiao X, Wang L. Chinese Medical Association consensus for standardized diagnosis and treatment of pancreatic neuroendocrine neoplasms. Chin Med J (Engl) 2023; 136:2397-2411. [PMID: 37690992 PMCID: PMC10586833 DOI: 10.1097/cm9.0000000000002848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Indexed: 09/12/2023] Open
Affiliation(s)
- Feng Jiao
- Department of Oncology, State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Jiujie Cui
- Department of Oncology, State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Deliang Fu
- Department of Pancreatic Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Qi Li
- Department of Oncology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China
| | - Zheng Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi 710061, China
| | - Zan Teng
- Department of Oncology, The First Hospital of China Medical University, Shenyang, Liaoning 110801, China
| | - Hongmei Zhang
- Department of Medical Oncology, The First Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi 710032, China
| | - Jun Zhou
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Zhihong Zhang
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xiaobing Chen
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan 450003, China
| | - Yuhong Zhou
- Department of Medical Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yixiong Li
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yiping Mou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Renyi Qin
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Yongwei Sun
- Department of Biliary-Pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Gang Jin
- Department of Hepatobiliary Pancreatic Surgery, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Yuejuan Cheng
- Department of Medical Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jian Wang
- Department of Radiology, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
| | - Gang Ren
- Department of Radiotherapy, Peking University Shougang Hospital, Beijing 100144, China
| | - Jiang Yue
- Department of Endocrinology and Metabolism, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Guangxin Jin
- Department of Interventional Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Xiuying Xiao
- Department of Oncology, State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Liwei Wang
- Department of Oncology, State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
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5
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Søreide K, Hallet J, Jamieson NB, Stättner S. Optimal surgical approach for digestive neuroendocrine neoplasia primaries: Oncological benefits versus short and long-term complications. Best Pract Res Clin Endocrinol Metab 2023; 37:101786. [PMID: 37328324 DOI: 10.1016/j.beem.2023.101786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The rising incidence and the accumulating prevalence of neuroendocrine neoplasia (NEN) in the population makes this a common, prevalent and a clinically relevant disease group. Surgical resection represents the only potentially curative treatment for digestive NENs. Thus, resection should in principle be considered for all patients with NEN, although taking the patients age, relevant comorbidity, and performance status into account for operability. Patients with insulinomas, NEN of the appendix and rectal NENs are usually cured by surgery alone. However, less than a third of patients are amendable to curative surgery alone at time of diagnosis. Furthermore, recurrence is common and may occur years after primary surgery, hence the long follow-up time recommended in most NENs (>10 years). As many patients with NENs present with locoregional or metastatic disease, there is considerable debate regarding the role of debulking surgery in these settings. However, good long-term survival can be achieved in a considerable proportion of patients, with 50-70% alive up to 10 years after surgery. Location and grade are the main determinants of long-term survival. Here we present considerations to surgery for primary neuroendocrine tumors in the digestive tract.
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Affiliation(s)
- Kjetil Søreide
- Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway; Gastrointestinal Translational Research Group, Laboratory for Molecular Medicine, Stavanger University Hospital, Stavanger, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway.
| | - Julie Hallet
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; Susan Leslie Clinic for Neuroendocrine Tumors - Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Nigel B Jamieson
- Wolfson Wohl Cancer Research Centre, School of Cancer Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Stefan Stättner
- Department of General, Visceral and Vascular Surgery, Salzkammergutklinikum, Vöcklabruck, Austria
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6
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Varghese DG, Del Rivero J, Bergsland E. Grade Progression and Intrapatient Tumor Heterogeneity as Potential Contributors to Resistance in Gastroenteropancreatic Neuroendocrine Tumors. Cancers (Basel) 2023; 15:3712. [PMID: 37509373 PMCID: PMC10378410 DOI: 10.3390/cancers15143712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Gastroenteropancreatic neuroendocrine neoplasms (NENs) are a heterogenous group of tumors that are incurable when metastatic, regardless of grade. The aim of this article is to understand tumor heterogeneity and grade progression as possible contributors to drug resistance in gastroentropancreatic neuroendocrine tumors (GEP-NETs). Heterogeneity has been observed in the genetic, pathological, and imaging features of these tumors at baseline. Diagnostic challenges related to tumor sampling and the potential for changes in grade over time further confound our ability to optimize therapy for patients. A better understanding of NEN biology and tumor heterogeneity at baseline and over time could lead to the development of new therapeutic avenues.
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Affiliation(s)
- Diana Grace Varghese
- Developmental Therapeutics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 94158, USA
| | - Jaydira Del Rivero
- Developmental Therapeutics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 94158, USA
| | - Emily Bergsland
- UCSF Helen Diller Family Comprehensive Cancer Center and Department of Medicine, University of California, San Francisco (UCSF), San Francisco, CA 94158, USA
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7
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Fallows M, Samant A, Wilson H, Mirnezami R. A Systematic Review of Surgical Management Strategies in the Treatment of Peritoneal Carcinomatosis of Neuroendocrine Origin. Curr Oncol 2023; 30:6316-6329. [PMID: 37504326 PMCID: PMC10378295 DOI: 10.3390/curroncol30070466] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/17/2023] [Accepted: 06/29/2023] [Indexed: 07/29/2023] Open
Abstract
Cytoreductive surgery (CRS) represents the cornerstone of surgical management for peritoneal carcinomatosis (PC) and involves peritonectomy procedures aimed at complete peritoneal tumour resection. Frequently, CRS is combined with hyperthermic intraperitoneal chemotherapy (HIPEC). The combination of CRS + HIPEC is now considered the standard of care in patients with colorectal and ovarian PC. However, the role of this multi-modality treatment approach in patients with PC of neuroendocrine tumour origin (NET-PC) is less well understood. This systematic review provides a summary of available evidence on management strategies for patients with NET-PC. A systematic literature search was performed using Ovid Medline, EMBASE and Cochrane Library databases to identify studies reporting outcomes for patients with NET-PC undergoing surgical treatment. Eligible studies were assessed for methodological quality and design and evaluated for a method of surgical treatment, method of HIPEC delivery, oncological outcomes, and treatment-related morbidity. Eight studies, including a total of 1240 patients with NET-PC, met predefined inclusion criteria and have been included in this review. In three of the included studies, CRS alone was performed for patients with NET-PC, while five studies reported outcomes with combined treatment using CRS plus HIPEC. All studies were performed at tertiary peritoneal malignancy centres. Only one study directly compared outcomes in patients with NET-PC undergoing CRS plus HIPEC compared with CRS in isolation, with no significant difference in overall survival reported. Carefully selected patients with NET-PC may benefit from aggressive surgical treatment in the form of CRS +/- HIPEC. These procedures are best undertaken at centres with expertise in the management of both neuroendocrine tumours and peritoneal malignancy, as both are conditions that require tertiary-level care. The additional benefit of the HIPEC component in this group of patients remains unclear and warrants further investigation in clinical trials. Overall, the quality of data on this subject is restricted by the low number of studies and the variability in treatment methods employed. A multi-national data registry for patients with NET-PC may offer the opportunity to better define treatment algorithms. Translational research efforts in parallel should focus on developing a better biological understanding of NET-PC, with a view to identifying more effective intraperitoneal cytocidal agents.
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Affiliation(s)
- Megan Fallows
- Division of Medicine, University College London, London WC1E 6BT, UK
| | - Ambareesh Samant
- Department of Colorectal Surgery, The Royal Free Hospital, London NW3 2QG, UK
| | - Harry Wilson
- Department of Colorectal Surgery, The Royal Free Hospital, London NW3 2QG, UK
| | - Reza Mirnezami
- Department of Colorectal Surgery, The Royal Free Hospital, London NW3 2QG, UK
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8
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Matrood S, Gress TM, Rinke A, Mahnken AH. Radiofrequency and microwave ablation controls hepatic oligoprogression of advanced gastroenteropancreatic neuroendocrine tumors. J Neuroendocrinol 2023; 35:e13289. [PMID: 37322845 DOI: 10.1111/jne.13289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 12/30/2022] [Accepted: 05/06/2023] [Indexed: 06/17/2023]
Abstract
In progression of multifocal liver metastases of gastroenteropancreatic neuroendocrine tumors (GEP-NET) escalation of systemic therapy is indicated. The aim of this retrospective study was to investigate the potential of local thermal ablation in hepatic oligoprogression and otherwise stable disease in GEP-NET. Patients with hepatic oligoprogression and otherwise stable disease, who underwent radiofrequency ablation (RFA) or microwave ablation (MWA) for local control, were included in the study. Thermal ablation was performed while maintaining the ongoing systemic therapy or without addition of a systemic therapy. The effectiveness of this therapeutic approach was evaluated by determination of local treatment success, improvement of progression-free survival (PFS) and the safety. Seventeen thermal ablation procedures were performed in 13 patients with well differentiated NET including seven ileum NET, four pancreatic NET, one appendix NET and one rectum NET. RFA and MWA of liver metastases were well tolerated without major complications. Thermal ablation resulted in an estimated median PFS of 62.6 weeks (mean 50.5 weeks; range 10.1-78.9 weeks) per procedure. In four patients, two ablation procedures were performed throughout the course of their disease resulting in an estimated median PFS of 69.1 weeks (mean 71.6 weeks; range 10.1-123.1 weeks) per patient. Start or change of systemic therapy could be delayed up to 123.1 weeks by using thermal ablations for isolated progression of single liver metastases. 88% of thermal ablations prolonged PFS. Thermal ablation of liver metastases in a non-curative intent has the potential to provide focal growth control and to prolong PFS in GEP-NET patients with hepatic oligoprogression.
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Affiliation(s)
- Sami Matrood
- Department of Gastroenterology, Endocrinology, Metabolism and Infectiology, University Hospital Marburg, Marburg, Germany
| | - Thomas Mathias Gress
- Department of Gastroenterology, Endocrinology, Metabolism and Infectiology, University Hospital Marburg, Marburg, Germany
| | - Anja Rinke
- Department of Gastroenterology, Endocrinology, Metabolism and Infectiology, University Hospital Marburg, Marburg, Germany
| | - Andreas Horst Mahnken
- Department of Diagnostic and Interventional Radiology, University Hospital Marburg, Marburg, Germany
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9
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Surgical Options for Peritoneal Surface Metastases from Digestive Malignancies-A Comprehensive Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59020255. [PMID: 36837456 PMCID: PMC9960111 DOI: 10.3390/medicina59020255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023]
Abstract
The peritoneum is a common site for the dissemination of digestive malignancies, particularly gastric, colorectal, appendix, or pancreatic cancer. Other tumors such as cholangiocarcinomas, digestive neuroendocrine tumors, or gastrointestinal stromal tumors (GIST) may also associate with peritoneal surface metastases (PSM). Peritoneal dissemination is proven to worsen the prognosis of these patients. Cytoreductive surgery (CRS), along with systemic chemotherapy, have been shown to constitute a survival benefit in selected patients with PSM. Furthermore, the association of CRS with hyperthermic intraperitoneal chemotherapy (HIPEC) seems to significantly improve the prognosis of patients with certain types of digestive malignancies associated with PSM. However, the benefit of CRS with HIPEC is still controversial, especially due to the significant morbidity associated with this procedure. According to the results of the PRODIGE 7 trial, CRS for PSM from colorectal cancer (CRC) achieved overall survival (OS) rates higher than 40 months, but the addition of oxaliplatin-based HIPEC failed to improve the long-term outcomes. Furthermore, the PROPHYLOCHIP and COLOPEC trials failed to demonstrate the effectiveness of oxaliplatin-based HIPEC for preventing peritoneal metastases development in high-risk patients operated for CRC. In this review, we discuss the limitations of these studies and the reasons why these results are not sufficient to refute this technique, until future well-designed trials evaluate the impact of different HIPEC regimens. In contrast, in pseudomyxoma peritonei, CRS plus HIPEC represents the gold standard therapy, which is able to achieve 10-year OS rates ranging between 70 and 80%. For patients with PSM from gastric carcinoma, CRS plus HIPEC achieved median OS rates higher than 40 months after complete cytoreduction in patients with a peritoneal cancer index (PCI) ≤6. However, the data have not yet been validated in randomized clinical trials. In this review, we discuss the controversies regarding the most efficient drugs that should be used for HIPEC and the duration of the procedure. We also discuss the current evidence and controversies related to the benefit of CRS (and HIPEC) in patients with PSM from other digestive malignancies. Although it is a palliative treatment, pressurized intraperitoneal aerosolized chemotherapy (PIPAC) significantly increases OS in patients with unresectable PSM from gastric cancer and represents a promising approach for patients with PSM from other digestive cancers.
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10
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Mogl MT, Öllinger R, Jann H, Gebauer B, Fehrenbach U, Amthauer H, Wetz C, Schmelzle M, Raschzok N, Krenzien F, Goretzki PE, Pratschke J, Schoening W. Differenzierte Therapiestrategie bei Lebermetastasen gastro-entero-pankreatischer Neuroendokriner Neoplasien. Zentralbl Chir 2022; 147:270-280. [DOI: 10.1055/a-1830-8442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
ZusammenfassungNeuroendokrine Neoplasien (NEN) bilden eine heterogene Gruppe maligner Tumoren, die überwiegend dem gastro-entero-pankreatischen System (GEP) zuzuordnen sind. Hierbei sind Dünndarm und
Pankreas die häufigsten Organe für Primärtumoren, die Leber stellt den dominanten Metastasierungsort dar. Da viele Patient*innen lange asymptomatisch bleiben, führen oftmals zufällig
diagnostizierte Lebermetastasen oder ein Ileus zur Diagnose. Die einzige kurative Therapieoption stellt die komplette Entfernung von Primarius und Metastasen dar. Besonders im Falle der
metastasierten Erkrankung sollten die vorhandenen Therapieoptionen immer im interdisziplinären Tumorboard mit Spezialisten*innen aus Gastroenterologie, (Leber-)Chirurgie, Radiologie,
Nuklearmedizin, Radiotherapie, Pathologie und Endokrinologie evaluiert werden. Durch die Kombination der verschiedenen Therapieverfahren kann auch für Patient*innen mit fortgeschrittener
Erkrankung eine jahrelange Prognose bei guter Lebensqualität erreicht werden. Wichtig für die Therapieentscheidung sind neben patientenindividuellen Faktoren der Differenzierungsgrad des
Tumors, dessen hormonelle Sekretion, das Metastasierungsmuster und der Erkrankungsverlauf. Die Behandlung von Lebermetastasen umfasst neben den unterschiedlichen chirurgischen Strategien die
lokal-ablativen radiologischen und nuklearmedizinischen Verfahren, die als Ergänzung zu den systemischen Therapien zur Verfügung stehen.
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Affiliation(s)
- Martina T. Mogl
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Robert Öllinger
- Europäisches Metastasenzentrum Charité, Charité Universitätsmedizin-Berlin, Berlin, Deutschland
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Henning Jann
- Medizinische Klinik für Hepatologie und Gastroenterologie, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Bernhard Gebauer
- Klinik für Radiologie, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Uli Fehrenbach
- Klinik für Radiologie, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Holger Amthauer
- Klinik für Nuklearmedizin, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Christoph Wetz
- Klinik für Nuklearmedizin, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Moritz Schmelzle
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Nathanael Raschzok
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Felix Krenzien
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Peter E. Goretzki
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Johann Pratschke
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Wenzel Schoening
- Chirurgische Klinik Campus Charité Mitte
- Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Deutschland
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11
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Billmann F, Nießen A, Hackert T. [Importance of surgery in distant metastatic pancreatic neuroendocrine neoplasms]. Chirurg 2022; 93:758-764. [PMID: 35403909 DOI: 10.1007/s00104-022-01630-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2022] [Indexed: 11/28/2022]
Abstract
The majority of patients with pancreatic neuroendocrine neoplasms (pNEN) already present with distant metastases at diagnosis. The heterogeneity of pNEN and the broad spectrum of treatment options make adequate patient selection and an evidence-based strategy essential. In metastatic pNEN both primary resection and resection of liver metastases have been shown to improve overall survival. Surgical treatment of liver metastases can also be carried out with palliative intent, especially for symptomatic pNEN and can have a positive effect on disease-free survival and overall survival. Classical hepatectomy techniques and innovative techniques (two-stage resections, liver transplantation) are available to the surgeon. In complex growth types of liver metastases, there is increasing evidence for a combination of surgery and ablative methods. Due to a relevant risk of recurrence following liver resection, pNEN patients need to be included in multimodal treatment concepts. Current areas of interest in the treatment of metastatic pNEN are the use of adjuvant/neoadjuvant chemotherapy and surgery in G3-NEN and G3-NEC patients. The aim of this review is to give an overview on the impact of surgery in the situation of distant metastatic NEN of the pancreas.
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Affiliation(s)
- F Billmann
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 420, 69120, Heidelberg, Deutschland.
| | - A Nießen
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 420, 69120, Heidelberg, Deutschland
| | - T Hackert
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 420, 69120, Heidelberg, Deutschland
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12
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Siebenhüner AR, Langheinrich M, Friemel J, Schaefer N, Eshmuminov D, Lehmann K. Orchestrating Treatment Modalities in Metastatic Pancreatic Neuroendocrine Tumors-Need for a Conductor. Cancers (Basel) 2022; 14:cancers14061478. [PMID: 35326628 PMCID: PMC8946777 DOI: 10.3390/cancers14061478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/28/2022] [Accepted: 03/10/2022] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Pancreatic neuroendocrine tumors (pNET) are a heterogeneous and challenging entity, and today’s guidelines offer a variety of treatment modalities, while surgery has a clear role for patients with resectable tumors and early stages, advanced, or metastatic pNET may benefit from treatments that were evaluated in randomized controlled studies during the last year. With this review, we aim to provide an updated view on treatment options for metastatic pNET. Abstract Pancreatic neuroendocrine tumors (pNETs) are a vast growing disease. Over 50% of these tumors are recognized at advanced stages with lymph node, liver, or distant metastasis. An ongoing controversy is the role of surgery in the metastatic setting as dedicated systemic treatments have emerged recently and shown benefits in randomized trials. Today, liver surgery is an option for advanced pNETs if the tumor has a favorable prognosis, reflected by a low to moderate proliferation index (G1 and G2). Surgery in this well-selected population may prolong progression-free and overall survival. Optimal selection of a treatment plan for an individual patient should be considered in a multidisciplinary tumor board. However, while current guidelines offer a variety of modalities, there is so far only a limited focus on the right timing. Available data is based on small case series or retrospective analyses. The focus of this review is to highlight the right time-point for surgery in the setting of the multimodal treatment of an advanced pancreatic neuroendocrine tumor.
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Affiliation(s)
- Alexander R. Siebenhüner
- Clinic for Gastroenterology and Hepatology, University Hospital Zurich and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland
- ENETS Center of Excellence Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland;
- Correspondence: ; Tel.: +41-44-255-11-11
| | - Melanie Langheinrich
- Department of Visceral Surgery, University Hospital Greifswald, Ferdinand-Sauerbruch-Strasse, D-17475 Greifswald, Germany;
| | - Juliane Friemel
- Institute for Pathologie, University Bern, Murtenstrasse 31, CH-3008 Bern, Switzerland;
| | - Niklaus Schaefer
- Department of Nuclear Medicine, University Hospital Lausanne, Rue du Bugnon 46, CH-1011 Lausanne, Switzerland;
| | - Dilmurodjon Eshmuminov
- Department of Surgery and Transplantation, University Hospital of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland;
| | - Kuno Lehmann
- ENETS Center of Excellence Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland;
- Department of Surgery and Transplantation, University Hospital of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland;
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13
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Hudson JM, Chung HTK, Chu W, Taggar A, Davis LE, Hallet J, Law CHL, Singh S, Myrehaug S. Stereotactic Ablative Radiotherapy for the Management of Liver Metastases from Neuroendocrine Neoplasms: A Preliminary Study. Neuroendocrinology 2022; 112:153-160. [PMID: 33530088 DOI: 10.1159/000514914] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 01/21/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Liver metastases are common in patients with neuroendocrine neoplasms. The role of stereotactic ablative radiotherapy (SABR) is not well understood in this population. OBJECTIVE The objective of this study was to evaluate the safety and efficacy of SABR in treating well-differentiated neuroendocrine liver metastases (WD-NELM). METHODS A retrospective review of patients with WD-NELM treated with SABR was conducted between January 2015 and July 2019. Demographic, treatment, and clinical/radiographic follow-up data were abstracted. RECIST 1.1 criteria were applied to each individual target to evaluate the response to treatment. Local control (LC) and progression-free survival (PFS) were determined using the Kaplan-Meier methodology. Toxicity was reported according to the CTCAE v5.0. RESULTS Twenty-five patients with a total of 53 liver metastases treated with SABR were identified. Most patients (68%) had midgut tumors, were grade 2 (80%), and had high-volume intrahepatic and/or extrahepatic disease (76%). The median number of liver metastases treated was 2, with a median size of 2.5 cm. The median radiation dose delivered was 50 Gy/5 fractions. The median follow-up was 14 months; 24 of the 25 patients were alive at the time of analysis. The objective response rate was 32%, with improvement or stability in 96% of lesions treated. The median time to best response was 9 months. The 1-year LC and PFS were 92 and 44%, respectively. No grade 3/4 acute or late toxicity was identified. CONCLUSIONS Liver SABR is a safe and promising means of providing LC for WD-NELM. This treatment modality should be evaluated in selected patients in concert with strategies to manage systemic disease.
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Affiliation(s)
- John Monte Hudson
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Hans Tse-Kan Chung
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - William Chu
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Amandeep Taggar
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Laura Ellen Davis
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Québec, Canada
| | - Julie Hallet
- Department of Surgical Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Calvin How Lim Law
- Department of Surgical Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Simron Singh
- Division of Medical Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Sten Myrehaug
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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Benhaim L, Faron M, Hadoux J, Gelli M, Sourrouille I, Burtin P, Honoré C, Malka D, Leboulleux S, Ducreux M, Scoazec JY, Goere D, Baudin E. Long-Term Results after Surgical Resection of Peritoneal Metastasis from Neuroendocrine Tumors. Neuroendocrinology 2021; 111:599-608. [PMID: 32512564 DOI: 10.1159/000509220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/08/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Peritoneal metastases from neuroendocrine tumors are associated with a bad prognosis. The objective of our study was to evaluate whether surgical resection could lead to prolonged survival in selected patients. This survival was compared to that of patients operated for liver metastasis. METHODS From our prospectively maintained database we included 88 patients who underwent the complete resection of peritoneal and/or liver metastasis between January 1995 and December 2016 in Gustave-Roussy. Three resection groups were compared: peritoneal metastasis alone, liver metastasis alone, and the combined resection of liver and peritoneal metastases. RESULTS The median peritoneal cancer index was 10 in the peritoneal group and 11 in the peritoneal + liver group. The 5-year overall survival was 81% (60-100) in the peritoneal group compared to 78% (65.2-92.8) in the liver group, and 72% (58.7-89.7) in the peritoneal + liver group (p = 0.71). The 3-year disease-free survival reached 26.9% (16.1-45.1) in the liver group, 12.5% (2.3-68.2) in the peritoneal group, and 32.4% (19.9-52.6) in the combined liver + peritoneal group (p = 0.45). In the univariate analysis, the prognosis factors for a longer survival were: small bowel primary tumor origin, low preoperative chromogranin A level, and tumor grade ≤1. CONCLUSION Despite a high recurrence rate, long-term overall survival can be achieved after the resection of peritoneal metastasis in selected patients. This survival is comparable to that of patients operated for liver metastasis only. Surgery should stand as a standard treatment for peritoneal metastases in patients with resectable disease.
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Affiliation(s)
- Léonor Benhaim
- Department of Surgical Oncology, Gustave-Roussy Cancer Campus, Villejuif, France,
| | - Matthieu Faron
- Department of Surgical Oncology, Gustave-Roussy Cancer Campus, Villejuif, France
- Department of Biostatistics and Epidemiology, INSERM Unit 1018 CESP, Oncostat Team, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Julien Hadoux
- Department of Nuclear Medicine, Gustave Roussy Cancer Campus, Villejuif, France
| | - Maximiliano Gelli
- Department of Surgical Oncology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Isabelle Sourrouille
- Department of Surgical Oncology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Pascal Burtin
- Department of Gastro-enterology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Charles Honoré
- Department of Surgical Oncology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - David Malka
- Department of Gastro-enterology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Sophie Leboulleux
- Department of Nuclear Medicine, Gustave Roussy Cancer Campus, Villejuif, France
| | - Michel Ducreux
- Department of Gastro-enterology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Jean-Yves Scoazec
- Department of Nuclear Medicine, Gustave Roussy Cancer Campus, Villejuif, France
| | - Diane Goere
- Department of Surgical Oncology, Gustave-Roussy Cancer Campus, Villejuif, France
| | - Eric Baudin
- Department of Nuclear Medicine, Gustave Roussy Cancer Campus, Villejuif, France
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Koea J. Management of Locally Advanced and Unresectable Small Bowel Neuroendocrine Tumours. World J Surg 2020; 45:219-224. [PMID: 32860138 DOI: 10.1007/s00268-020-05740-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2020] [Indexed: 10/23/2022]
Abstract
Three subtypes of small bowel neuroendocrine tumours (SBNETs) have been described: Type A: SBNET with resectable mesenteric disease that does not involve the mesenteric root; Type B: "Borderline resectable" SBNET presenting with mesenteric nodal metastases and fibrosis adjacent but not encasing the main trunk of the superior mesenteric artery (SMA) and superior mesenteric vein (SMV); and Type C: "Locally advanced or irresectable" SBNET where tumour deposits and fibrosis encase the SMA and SMV. Type C SBNETs are rare and constitute around 5% of patients in reported series, although this may underestimate the prevalence. In these patients, almost all will present with symptoms of intestinal ischemia or obstruction and symptom management should be a primary main focus of treatment. All patients should be carefully staged with cross-sectional imaging and 68 Ga-dotate positron emission tomography, and discussed at a dedicated neuroendocrine tumour multidisciplinary meeting. Expert surgical review should always be sought as experienced centers have a high rate of successful resection of primary tumours and mesenteric disease. If resection is not feasible, surgical bypass should be considered in patients with a discrete and symptomatic point of obstruction. Non-operative management should emphasize symptomatic treatment with somatostatin analogs, nutritional advice and support and palliative care. Successful neoadjuvant approaches utilizing peptide radionucleide receptor therapy and systemic chemotherapy with everolimus or temazolamide/capecitabine have not been reported.
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Affiliation(s)
- Jonathan Koea
- The Department of Surgery, North Shore Hospital, Private Bag 93503, Takapuna, Auckland, 0620, New Zealand.
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16
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Role of Primary Tumor Resection for Metastatic Small Bowel Neuroendocrine Tumors. World J Surg 2020; 45:213-218. [PMID: 32797281 DOI: 10.1007/s00268-020-05727-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2020] [Indexed: 12/21/2022]
Abstract
While small bowel resection is well established as standard of care for curative-intent management of localized and loco-regional small bowel neuroendocrine tumors (SB-NETs), resection of the primary tumor in the setting of metastatic disease is debated. This review addresses the role of primary tumor resection for stage IV well-differentiated grade 1 and 2 SB-NETs. While survival benefits have been reported for primary tumor resection in the setting of metastatic disease, these studies are limited by selection bias and thus controversial. The main clinical benefits of primary tumor resection for stage IV disease involve the prevention of potentially debilitating complications associated with mesenteric fibrosis, including intestinal obstruction, mesenteric ischemia and angina, venous congestion, malabsorption, and malnutrition. Patients with metastases undergoing initial resection of the primary SB-NETs appear to have fewer episodes of care and re-intervention for loco-regional complications than those who do not undergo resection. As recommended by the NANETS and ENETS guidelines, resection of the primary tumor for stage IV SB-NETs should be strongly considered to avoid future loco-regional complications and potentially to improve survival. All patients with stage IV SB-NETs should be assessed by a surgeon experienced in the management of NETs to consider surgical therapies, including resection of the primary tumor despite metastatic disease.
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Kıvrak Salim D, Bayram S, Gömceli İ, Çekin AH, Karaca M, Koçer M, Yıldız M. Palliative resection of primary site in advanced gastroenteropancreatic neuroendocrine tumors improves survivals. TURKISH JOURNAL OF GASTROENTEROLOGY 2019; 30:910-916. [PMID: 31625933 DOI: 10.5152/tjg.2019.19168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND/AIMS Gastroenteropancreatic neuroendocrine tumors are rarely seen and have heterogeneous clinical outcomes. Mostly half of the patients had metastatic disease at presentation. Palliative resection of primary site in metastatic disease is still controversial. The aim of this study was to find out the influence of resection of primary tumor site on progression-free survival and overall survival in metastatic non-functioning gastroenteropancreatic neuroendocrine tumors. The secondary end point is to determine the prognostic factors influencing the survivals. MATERIALS AND METHODS This study was conducted at a single medical oncology center, Antalya Education and Research Hospital. Patients who had non-functioning metastatic gastroenteropancreatic neuroendocrine tumors with primary site resected or unresected were compared retrospectively. Resection of metastases was excluded. RESULTS Fifty-three patients were included in the study and 29 patients had primary tumor resection. The primary site resected group had favorable outcomes with the overall survival (median unreached) compared to the median overall survival of 30 months in the unresected group (p=0.001). Median progression-free survival was also better in the primary site resected group than the unresected group (60 months vs. 14 months, respectively) (p=0.013). In multivariate analysis, unresected primary site and high-grade tumors were found to be independent prognostic factors on low survivals (Hazard ratio (HR): 4.6; 95% CI: 1.21-17.47 and HR: 10.1; 95% CI: 1.15-88.84, respectively). Age (p=0.131), gender (p=0.051), chromogranin A level (p=0.104), Ki-67 index (p=0.550), tumor size (p=0.623), and primary tumor area (p=0.154) did not influence the overall survival. CONCLUSION Gastroenteropancreatic neuroendocrine tumors with primary site resected had improved survivals when compared to the unresected group.
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Affiliation(s)
- Derya Kıvrak Salim
- Department of Medical Oncology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Selami Bayram
- Department of Medical Oncology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - İsmail Gömceli
- Department of Gastroenterological Surgery, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Ayhan Hilmi Çekin
- Department of Gastroenterology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Mustafa Karaca
- Department of Medical Oncology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Murat Koçer
- Department of Medical Oncology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Mustafa Yıldız
- Department of Medical Oncology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
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18
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Chan DL, Hallet J. ASO Author Reflections: Cytoreduction for Extrahepatic Metastatic Neuroendocrine Tumors. Ann Surg Oncol 2018; 25:866-867. [PMID: 30306370 DOI: 10.1245/s10434-018-6885-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Indexed: 11/18/2022]
Affiliation(s)
- David L Chan
- Susan Leslie Multidisciplinary Clinic for Neuroendocrine Tumors, Odette Cancer Centre, Toronto, ON, Canada.,Division of Medical Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Julie Hallet
- Susan Leslie Multidisciplinary Clinic for Neuroendocrine Tumors, Odette Cancer Centre, Toronto, ON, Canada. .,Department of Surgery, University of Toronto, Toronto, ON, Canada. .,Division of General Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada. .,Sunnybrook Research Institute, Toronto, ON, Canada.
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