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Ahmed S, Bosma N, Moser M, Ahmed S, Brunet B, Davies J, Doll C, Dueck DA, Kim CA, Ji S, Le D, Lee-Ying R, Lim H, McGhie JP, Mulder K, Park J, Ravi D, Renouf DJ, Schellenberg D, Wong RPW, Zaidi A. Systemic Therapy and Its Surgical Implications in Patients with Resectable Liver Colorectal Cancer Metastases. A Report from the Western Canadian Gastrointestinal Cancer Consensus Conference. Curr Oncol 2022; 29:1796-1807. [PMID: 35323347 PMCID: PMC8947455 DOI: 10.3390/curroncol29030147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/20/2022] [Accepted: 03/04/2022] [Indexed: 11/24/2022] Open
Abstract
The Western Canadian Gastrointestinal Cancer Consensus Conference (WCGCCC) convened virtually on 4 November 2021. The WCGCCC is an interactive multi-disciplinary conference attended by health care professionals, including surgical, medical, and radiation oncologists; pathologists; radiologists; and allied health care professionals from across four Western Canadian provinces, British Columbia, Alberta, Saskatchewan, and Manitoba, who are involved in the care of patients with gastrointestinal cancer. They participated in presentation and discussion sessions for the purpose of developing recommendations on the role of systemic therapy and its optimal sequence in patients with resectable metastatic colorectal cancer.
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Affiliation(s)
- Shahid Ahmed
- Saskatoon Cancer Center, Saskatchewan Cancer Agency, 20 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 4H4, Canada; (B.B.); (D.-A.D.); (D.L.)
| | - Nicholas Bosma
- British Columbia Cancer Agency, Vancouver, BC V5Z 4E6, Canada; (N.B.); (J.D.); (H.L.); (D.J.R.)
| | - Michael Moser
- Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada;
| | - Shahida Ahmed
- CancerCare Manitoba, Winnipeg, MB R3E 0V9, Canada; (S.A.); (C.A.K.); (R.P.W.W.)
| | - Bryan Brunet
- Saskatoon Cancer Center, Saskatchewan Cancer Agency, 20 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 4H4, Canada; (B.B.); (D.-A.D.); (D.L.)
- Department of Radiation Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Janine Davies
- British Columbia Cancer Agency, Vancouver, BC V5Z 4E6, Canada; (N.B.); (J.D.); (H.L.); (D.J.R.)
| | - Corinne Doll
- Arnie Charbonneau Cancer Institute, Alberta Health Service, Calgary, AB T2N 4Z6, Canada; (C.D.); (R.L.-Y.)
| | - Dorie-Anna Dueck
- Saskatoon Cancer Center, Saskatchewan Cancer Agency, 20 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 4H4, Canada; (B.B.); (D.-A.D.); (D.L.)
- Department of Medical Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Christina A. Kim
- CancerCare Manitoba, Winnipeg, MB R3E 0V9, Canada; (S.A.); (C.A.K.); (R.P.W.W.)
| | - Shuying Ji
- Shared Health, Winnipeg, MB R3B 2K6, Canada;
| | - Duc Le
- Saskatoon Cancer Center, Saskatchewan Cancer Agency, 20 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 4H4, Canada; (B.B.); (D.-A.D.); (D.L.)
- Department of Radiation Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Richard Lee-Ying
- Arnie Charbonneau Cancer Institute, Alberta Health Service, Calgary, AB T2N 4Z6, Canada; (C.D.); (R.L.-Y.)
| | - Howard Lim
- British Columbia Cancer Agency, Vancouver, BC V5Z 4E6, Canada; (N.B.); (J.D.); (H.L.); (D.J.R.)
| | | | - Karen Mulder
- Cross Cancer Institute, Alberta Health Services, Edmonton, AB T6G 1Z2, Canada;
| | - Jason Park
- Department of Surgery, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| | - Deepti Ravi
- Saskatchewan Health Authority, Saskatoon, SK S7K 0M7, Canada;
| | - Daniel J. Renouf
- British Columbia Cancer Agency, Vancouver, BC V5Z 4E6, Canada; (N.B.); (J.D.); (H.L.); (D.J.R.)
| | | | - Ralph P. W. Wong
- CancerCare Manitoba, Winnipeg, MB R3E 0V9, Canada; (S.A.); (C.A.K.); (R.P.W.W.)
| | - Adnan Zaidi
- Saskatoon Cancer Center, Saskatchewan Cancer Agency, 20 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 4H4, Canada; (B.B.); (D.-A.D.); (D.L.)
- Department of Medical Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
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Scafa D, Muedder T, Holz JA, Koch D, Nour Y, Garbe S, Gonzalez-Carmona MA, Feldmann G, Vilz TO, Köksal M, Giordano FA, Schmeel LC, Sarria GR. Dosimetric Comparison of Intraoperative Radiotherapy and SRS for Liver Metastases. Front Oncol 2021; 11:767468. [PMID: 34926271 PMCID: PMC8674179 DOI: 10.3389/fonc.2021.767468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/11/2021] [Indexed: 11/30/2022] Open
Abstract
Purpose/Objectives To perform a dosimetric comparison between kilovoltage intraoperative radiotherapy (IORT) and stereotactic radiosurgery (SRS) simulating both deep-inspiration breath-hold (DIBH) and free-breathing (FB) modalities for patients with liver metastases. Methods/Materials Diagnostic computed tomographies (CT) of patients carrying one or two lesions <4 cm and who underwent surgery were retrospectively screened and randomly selected for the study. For DIBH-SRS, a gross target volume (GTV) plus planning target volume (PTV) were delineated. For FB-SRS, a GTV plus an internal target volume (ITV) and PTV were defined. Accounting for the maximal GTV diameters, a modified GTV (GTV-IORT) was expanded circumferentially to simulate a resection cavity. The best suitable round-applicator size was thereafter selected. All treatment plans were calculated homogeneously to deliver 40 Gy. Doses delivered to organs at risk (OAR) and target volumes were compared for IORT vs. both SRS modalities. Results Eight patients encompassing 10 lesions were included in the study. The mean liver volume was 2,050.97 cm3 (SD, 650.82), and the mean GTV volume was 12.23 cm3 (SD, 12.62). As for target structures, GTV-IORT [19.44 cm3 (SD, 17.26)] were significantly smaller than both PTV DIBH-SRS [30.74 cm3 (SD, 24.64), p = 0.002] and PTV FB-SRS [75.82 cm3 (SD, 45.65), p = 0.002]. The median applicator size was 3 cm (1.5–4.5), and the mean IORT simulated delivery time was 45.45 min (SD, 19.88). All constraints were met in all modalities. Liver V9.1 showed significantly smaller volumes with IORT [63.39 cm3 (SD, 35.67)] when compared to DIBH-SRS [150.12 cm3 (SD, 81.43), p = 0.002] or FB-SRS [306.13 cm3 (SD, 128.75), p = 0.002]. No other statistical or dosimetrically relevant difference was observed for stomach, spinal cord, or biliary tract. Mean IORT D90 was 85.3% (SD, 6.05), whereas D95 for DIBH-SRS and FB-SRS were 99.03% (SD, 1.71; p = 0.042) and 98.04% (SD, 3.46; p = 0.036), respectively. Conclusion Kilovoltage IORT bears the potential as novel add-on treatment for resectable liver metastases, significantly reducing healthy liver exposure to radiation in comparison to SRS. Prospective clinical evidence is required to confirm this hypothesis.
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Affiliation(s)
- Davide Scafa
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | - Thomas Muedder
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | - Jasmin A Holz
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | - David Koch
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | - Younéss Nour
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | - Stephan Garbe
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | | | - Georg Feldmann
- Department of Internal Medicine III, University Hospital Bonn, Bonn, Germany
| | - Tim O Vilz
- Department of Surgery, University Hospital Bonn, Bonn, Germany
| | - Mümtaz Köksal
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | - Frank A Giordano
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
| | | | - Gustavo R Sarria
- Department of Radiation Oncology, University Hospital Bonn, Bonn, Germany
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Bosma NA, Keehn AR, Lee-Ying R, Karim S, MacLean AR, Brenner DR. Efficacy of perioperative chemotherapy in resected colorectal liver metastasis: A systematic review and meta-analysis. Eur J Surg Oncol 2021; 47:3113-3122. [PMID: 34420823 DOI: 10.1016/j.ejso.2021.07.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/26/2021] [Accepted: 07/29/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Nearly half of patients with colorectal cancer develop liver metastases. Radical resection of colorectal liver metastases (CRLM) offers the best chance of cure, significantly improving 5-year survival. Recurrence of metastatic disease is common, occurring in 60 % or more of patients. Clinical equipoise exists regarding the role of perioperative chemotherapy in patients with resected CRLM. This investigation sought to clarify the efficacy of perioperative chemotherapy in patients that have undergone curative-intent resection of CRLM. METHODS A systematic review and meta-analysis was completed of randomized controlled trials (RCTs) comparing perioperative chemotherapy to surgery alone in patients with resected CRLM. MEDLINE (Ovid), EMBASE and Cochrane Central Register of Controlled Trials (CENTRAL) databases were searched, as well as abstracts from recent oncology conferences. A meta-analysis was performed pooling the hazard ratios for disease-free survival (DFS) and overall survival (OS), using a random-effects model. RESULTS A total of five, phase 3, open-label, RCTs were included resulting in a pooled analysis of 1119 of the total 1146 enrolled patients. 559 patients were randomized to perioperative chemotherapy and 560 to surgery alone. Pooled estimates demonstrated a statistically significant improvement in DFS (HR 0.71, 95 % CI: 0.61-0.82; p < 0.001) but not OS (HR 0.87, 95 % CI: 0.73-1.04; p = 0.136). CONCLUSION Perioperative chemotherapy in the setting of resected CRLM resulted in an improvement in DFS, however this did not translate into an OS benefit. Poor compliance to post-hepatectomy oxaliplatin-based chemotherapy regimens was identified. Further investigation into the optimal regimen and sequencing of perioperative chemotherapy is justified.
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Affiliation(s)
- Nicholas A Bosma
- Department of Oncology, University of Calgary, Tom Baker Cancer Centre, Calgary, AB, Canada.
| | - Alysha R Keehn
- Department of Surgery, University of Calgary, Foothills Medical Centre, Calgary, AB, Canada; Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, AB, Canada
| | - Richard Lee-Ying
- Department of Oncology, University of Calgary, Tom Baker Cancer Centre, Calgary, AB, Canada
| | - Safiya Karim
- Department of Oncology, University of Calgary, Tom Baker Cancer Centre, Calgary, AB, Canada
| | - Anthony R MacLean
- Department of Surgery, University of Calgary, Foothills Medical Centre, Calgary, AB, Canada
| | - Darren R Brenner
- Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, AB, Canada
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