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Smith HG, Schlesinger NH, Qvortrup C, Chiranth D, Lundon D, Ben-Yaacov A, Caballero C, Suppan I, Kok JH, Holmberg CJ, Mohan H, Montagna G, Santrac N, Sayyed R, Schrage Y, Sgarbura O, Ceelen W, Lorenzon L, Brandl A. Variations in the definition and perceived importance of positive resection margins in patients with colorectal cancer - an EYSAC international survey. Eur J Surg Oncol 2023; 49:107072. [PMID: 37722286 DOI: 10.1016/j.ejso.2023.107072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/03/2023] [Accepted: 09/09/2023] [Indexed: 09/20/2023]
Abstract
INTRODUCTION Microscopically positive resection margins (R1) are associated with poorer outcomes in patients with colorectal cancer. However, different definitions of R1 margins exist. It is unclear to what extent the definitions used in everyday clinical practice differ within and between nations. This study sought to investigate variations in the definition of R1 margins in colorectal cancer and the importance of margin status in clinical decision-making. MATERIALS AND METHODS A 14-point survey was developed by members of The European Society of Surgical Oncology (ESSO) Youngs Surgeons and Alumni Club (EYSAC) Research Academy targeting all members of the multidisciplinary team (MDT) treating patients with colorectal cancer. The survey was distributed on social media, in ESSO's monthly newsletter and via national societies. RESULTS In total, 137 responses were received. Most respondents were from Europe (89.7%), with the majority from Denmark (56.9%). Less than 2/3 of respondents defined R1 margins as the presence of viable cancer cells ≤1 mm of the margin. Only 60% reported that subdivisions of R1 margins (primary tumour vs tumour deposit vs metastatic lymph node) are routinely available. More than 20% of respondents reported that pathology reports are not routinely reviewed at MDT meetings. Less than half of respondents considered margin status in decision-making for type and duration of adjuvant chemotherapy in Stage III colon cancer. CONCLUSION The definitions and perceived clinical importance of microscopically positive margins in patients with colorectal cancer appear to vary. Adoption of an international dataset for pathology reporting may help to standardise current practices.
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Affiliation(s)
- H G Smith
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Abdominal Center K, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Denmark.
| | - N H Schlesinger
- Abdominal Center K, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Denmark
| | - C Qvortrup
- Department of Oncology, Rigshospital, University of Copenhagen, Denmark
| | - D Chiranth
- Department of Pathology, Rigshospital, University of Copenhagen, Denmark
| | - D Lundon
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Mount Sinai Department of Urology, New York, United States
| | - A Ben-Yaacov
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of General and Oncological Surgery - Surgery C, Sheba Medical Center, Tel-Hashomer, Israel
| | - C Caballero
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Breast International Group, Brussels, Belgium
| | - I Suppan
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Breast Center, Department of Gynaecology, Rottal-Inn-Kliniken Eggenfelden, Germany
| | - J Herrera Kok
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Upper GI Unit, University Hospital of Leon, Spain
| | - C J Holmberg
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Sweden
| | - H Mohan
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Peter MacCallum Cancer Centre in Melbourne, Australia
| | - G Montagna
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Breast Surgery Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - N Santrac
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Surgical Oncology Clinic, Institute for Oncology and Radiology of Serbia, Belgrade, Serbia
| | - R Sayyed
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of Surgical Oncology, Patel Hospital, Karachi, Pakistan
| | - Y Schrage
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of Surgical Oncology, Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - O Sgarbura
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of Surgical Oncology, Institut du Cancer Montpellier, University of Montpellier, France
| | - W Ceelen
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of GI Surgery and Cancer Research Institute Ghent (CRIG), Ghent University Hospital, Belgium
| | - L Lorenzon
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - A Brandl
- European Society of Surgical Oncology Young Surgeons and Alumni Club (EYSAC), Italy; Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Germany
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Smith HG, Skovgaards DM, Bui NH, Chiranth D, Qvortrup C, Schlesinger NH. Differences in adjuvant chemotherapy and oncological outcomes according to margin status in patients with stage III colon cancer. Acta Oncol 2023:1-7. [PMID: 37265367 DOI: 10.1080/0284186x.2023.2218555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Microscopically positive margins to lymph node metastases (R1LNM) are associated with poorer oncological outcomes in patients with Stage 3 colon cancer. These poorer outcomes were seen despite a greater proportion of these patients receiving adjuvant chemotherapy when compared to those with microscopically negative (R0) margins. We sought to determine if differences in the type or duration of adjuvant chemotherapy could account for the differences in outcomes seen between patients with R0 and R1LNM margins. METHODS A multicentre retrospective study including patients undergoing surgery for Stage 3 colon cancer between 2016-2019 at specialist centres. Patients were stratified according to margins status (R0 vs R1LNM). Type/duration of chemotherapy and oncological outcomes were compared between groups. RESULTS 718 patients were included, of whom 100 had R1LNM margins (13.1%). Patients with R1LNM margins had significantly poorer 3-year distant metastases-free (R0 78.2% (95% CI 74.5-81.3) versus R1LNM 58.8% (95% CI 47.2-68.6), p < 0.001) and disease specific survival (R0 88.3% (95% CI 85.2-90.9) versus R1LNM 78.5% (95% CI 68.0-85.8), p < 0.001) when compared to those with R0 margins. No differences were noted in the proportion of patients who completed long-course chemotherapy or were treated with oxaliplatin-based combinations between the R1LNM and R0 groups. Differences in outcomes between R0 and R1LNM groups persisted even when only those patients who completed long-course chemotherapy were compared. DISCUSSION Differences in adjuvant chemotherapy do not appear to account for the poorer oncological outcomes seen in patients with R1LNM margins after surgery for Stage 3 colon cancer. This suggests that adjuvant chemotherapy may be less effective in this patient group. Further studies to elucidate a potential biological basis for this difference are warranted.
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Affiliation(s)
- H G Smith
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Denmark
| | - D M Skovgaards
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Denmark
| | - N H Bui
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Denmark
| | - D Chiranth
- Department of Pathology, Rigs Hospital, University of Copenhagen, Denmark
| | - C Qvortrup
- Department of Oncology, Rigs Hospital, University of Copenhagen, Denmark
| | - N H Schlesinger
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Denmark
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