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Vaz da Silva DG, de Ribeiro HSDC, Dos Santos GO, Lindote MVN, Torres SM, Diniz AL, de Godoy AL, de Farias IC, Felismino TC, da Costa Junior WL, Coimbra FJF. Dense tumor-infiltrating lymphocytes (TILs) in liver metastasis from colorectal cancer are related to improved overall survival. J Surg Oncol 2024. [PMID: 38946284 DOI: 10.1002/jso.27759] [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: 04/04/2024] [Accepted: 06/02/2024] [Indexed: 07/02/2024]
Abstract
BACKGROUND AND OBJECTIVES Tumor-infiltrating lymphocytes (TILs) represent a host-tumor interaction, frequently signifying an augmented immunological response. Nonetheless, implications with survival outcomes in patients with colorectal carcinoma liver metastasis (CRLM) warrant rigorous validation. The objective was to demonstrate the association between TILs and survival in patients with CRLM. METHOD In a retrospective evaluation conducted in a single institution, we assessed all patients who underwent hepatectomy due to CRLM between 2014 and 2018. Comprehensive medical documentation reviews were executed. TILs were assessed by a liver pathologist, blinded to the clinical information, in all surgical slides. RESULTS This retrospective cohort included 112 patients. Median overall survival (OS) was 58 months and disease-free survival (DFS) was 12 months for the entire cohort. Comparison between groups showed a median OS of 81 months in the dense TILs group and 40 months in the weak/absent group (p = 0.001), and DFS was 14 months versus 9 months (p = 0.041). Multivariable analysis showed that TILs were an independent predictor of OS (HR 1.95; p = 0.031). CONCLUSIONS Dense TILs are a pivotal prognostic indicator, correlating with enhanced OS. Including TILs information in histopathological evaluations should refine the clinical decision-making process for this group of patients.
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Affiliation(s)
| | | | | | | | - Silvio Mello Torres
- Department of Abdominal Surgery, A. C. Camargo Cancer, CenterSão Paulo, Brazil
| | | | - André Luiz de Godoy
- Department of Abdominal Surgery, A. C. Camargo Cancer, CenterSão Paulo, Brazil
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Chang JH, Kakati RT, Wehrle C, Naples R, Joyce D, Augustin T, Simon R, Walsh RM, Dahdaleh FS, Spanheimer P, Salti I, Parente A, Naffouje SA. Incidence of clinically relevant postoperative pancreatic fistula in patients undergoing open and minimally invasive pancreatoduodenectomy: a population-based study. JOURNAL OF MINIMALLY INVASIVE SURGERY 2024; 27:95-108. [PMID: 38887001 PMCID: PMC11187613 DOI: 10.7602/jmis.2024.27.2.95] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 06/04/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024]
Abstract
Purpose Postoperative pancreatic fistula (POPF) remains a devastating complication of pancreatoduodenectomy (PD). Minimally invasive PD (MIPD), including laparoscopic (LPD) and robotic (RPD) approaches, have comparable POPF rates to open PD (OPD). However, we hypothesize that the likelihood of having a more severe POPF, as defined as clinically relevant POPF (CR-POPF), would be higher in an MIPD relative to OPD. Methods The American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) targeted pancreatectomy dataset (2014-2020) was reviewed for any POPF after OPD. Propensity score matching (PSM) compared MIPD to OPD, and then RPD to LPD. Results Among 3,083 patients who developed a POPF, 2,843 (92.2%) underwent OPD and 240 (7.8%) MIPD; of these, 25.0% were LPD (n = 60) and 75.0% RPD (n = 180). Grade B POPF was observed in 45.4% (n = 1,400), and grade C in 6.0% (n = 185). After PSM, MIPD patients had higher rates of CR-POPF (47.3% OPD vs. 54.4% MIPD, p = 0.037), as well as higher reoperation (9.1% vs. 15.3%, p = 0.006), delayed gastric emptying (29.2% vs. 35.8%, p = 0.041), and readmission rates (28.2% vs. 35.1%, p = 0.032). However, CR-POPF rates were comparable between LPD and RPD (56.8% vs. 49.3%, p = 0.408). Conclusion The impact of POPF is more clinically pronounced after MIPD than OPD with a more complex postoperative course. The difference appears to be attributed to the minimally invasive environment itself as no difference was noted between LPD and RPD. A clear biological explanation of this clinical observation remains missing. Further studies are warranted.
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Affiliation(s)
- Jenny H. Chang
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Rasha T. Kakati
- Department of Surgical Oncology, University of North Carolina, Chapel Hill, NC, USA
| | - Chase Wehrle
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Robert Naples
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Daniel Joyce
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Toms Augustin
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Robert Simon
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - R Matthew Walsh
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Fadi S. Dahdaleh
- Department of Surgical Oncology, Edward-Elmhurst Health, Naperville, IL, USA
| | - Philip Spanheimer
- Department of Surgical Oncology, University of North Carolina, Chapel Hill, NC, USA
| | - Isabella Salti
- Department of Surgical Oncology, Edward-Elmhurst Health, Naperville, IL, USA
| | | | - Samer A. Naffouje
- Department of Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
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Boughriba R, Sahraoui G, Chaar I, Weslati M, Ayed K, Ounissi D, Hazgui M, Bouraoui S, Gati A. Significant association of MCP1 rs1024611 and CCR2 rs1799864 polymorphisms with colorectal cancer and liver metastases susceptibility and aggressiveness: A case-control study. Cytokine 2023; 167:156193. [PMID: 37149962 DOI: 10.1016/j.cyto.2023.156193] [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: 04/13/2022] [Revised: 02/07/2023] [Accepted: 03/26/2023] [Indexed: 05/09/2023]
Abstract
BACKGROUND The MCP-1/CCR2 axis is one of the major chemokine signaling pathways that play a crucial role in the tumor microenvironment and has been involved in triggering various tumor progression mechanisms, such as increasing the immunosuppressive cells recruitment and promoting tumor cell proliferation and invasiveness. AIM The current study investigated the association of MCP1 (rs1024611) and CCR2 (rs1799864) genes variants with the risk as well as prognosis of colorectal cancer (CRC) and colorectal liver metastases (CRLM). SUBJECTS AND METHODS A retrospective cohort study involved 408 patients (284 CRC and 124 CRLM), and 284 healthy control was conducted. Genotyping of selected polymorphisms was performed by PCR-RFLP assays and confirmed by microchip and capillary electrophoresis. RESULTS The results highlighted a positive association between MCP1 rs1024611 (non-AA) and CCR2 rs1799864 (GA) genotypes with increased CRC and CRLM risk. Correlation between SNPs and clinicopathological characteristics revealed a positive association between MCP1 rs1024611 and CCR2 rs1799864 (dominant model) and CRC poor prognosis features. Kaplan-Meier survival analysis revealed a significant association between MCP1 rs1024611 non-AA carriers and decreased survival rate. Neoadjuvant treatment showed an improvement in CRC and CRLM survival rates among carriers of MCP1 and CCR2 wild-type genotype. FOLFIRI chemotherapy exhibits reduced survival rates for patients who carried mutated genotypes of MCP1 and CCR2 polymorphisms. CONCLUSION Considering our results, we suggest That both MCP1 and CCR2 polymorphisms may constitute independent factors for CRC and CRLM occurrence and can be helpful targets for an efficient therapeutic approach.
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Affiliation(s)
- Rahma Boughriba
- Laboratory of Genetic, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar (UTM), 2092 Tunis, Tunisia; Unit of Colorectal Cancer Research UR12SP14, Mongi Slim Hospital, Sidi Daoud, La Marsa, 2046 Tunis, Tunisia
| | - Ghada Sahraoui
- Department of Pathological Anatomy and Cytology of Salah Azaiez Oncology Institute, Bab Saadoun 1029 Tunis, Tunisia; Medical School of Tunis, University of Tunis El Manar, 15 rue Djebel Lakhdhar, La Rabta, 1007 Tunis, Tunisia
| | - Ines Chaar
- Unit of Colorectal Cancer Research UR12SP14, Mongi Slim Hospital, Sidi Daoud, La Marsa, 2046 Tunis, Tunisia
| | - Marwa Weslati
- Unit of Colorectal Cancer Research UR12SP14, Mongi Slim Hospital, Sidi Daoud, La Marsa, 2046 Tunis, Tunisia
| | - Khouloud Ayed
- Laboratory of Genetic, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar (UTM), 2092 Tunis, Tunisia
| | - Donia Ounissi
- Unit of Colorectal Cancer Research UR12SP14, Mongi Slim Hospital, Sidi Daoud, La Marsa, 2046 Tunis, Tunisia
| | - Mariem Hazgui
- Unit of Colorectal Cancer Research UR12SP14, Mongi Slim Hospital, Sidi Daoud, La Marsa, 2046 Tunis, Tunisia
| | - Saadia Bouraoui
- Unit of Colorectal Cancer Research UR12SP14, Mongi Slim Hospital, Sidi Daoud, La Marsa, 2046 Tunis, Tunisia; Medical School of Tunis, University of Tunis El Manar, 15 rue Djebel Lakhdhar, La Rabta, 1007 Tunis, Tunisia
| | - Asma Gati
- Laboratory of Genetic, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar (UTM), 2092 Tunis, Tunisia.
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Zhou Z, Han X, Sun D, Liang Z, Wu W, Ju H. A Comprehensive Prognostic Model for Colorectal Cancer Liver Metastasis Recurrence After Neoadjuvant Chemotherapy. Front Oncol 2022; 12:855915. [PMID: 35785215 PMCID: PMC9245066 DOI: 10.3389/fonc.2022.855915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 05/17/2022] [Indexed: 12/03/2022] Open
Abstract
Background For patients with colorectal cancer liver metastases (CRLMs), it is important to stratify patients according to the risk of recurrence. This study aimed to validate the predictive value of some clinical, imaging, and pathology biomarkers and develop an operational prognostic model for patients with CRLMs with neoadjuvant chemotherapy (NACT) before the liver resection. Methods Patients with CRLMs accompanied with primary lesion and liver metastases lesion resection were enrolled into this study. A nomogram based on independent risk factors was identified by Kaplan–Meier analysis and multivariate Cox proportional hazard analysis. The predictive ability was evaluated by receiver operating characteristic (ROC) curves and decision curve analysis (DCA). Calibration plot were also used to explore the consistency between prediction and reality. Results A total of 118 patients were enrolled into the study. Multivariable Cox analysis found that histopathological growth patterns (HGPs) [Hazard Rate (HR) = 2.130], radiology response (stable disease vs. partial response, HR = 2.207; progressive disease vs. partial response, HR = 3.824), lymph node status (HR = 1.442), and age (HR = 0.576) were independent risk factors for disease-free survival (DFS) (p < 0.05). Corresponding nomogram was constructed on the basis of the above factors, demonstrating that scores ranging from 5 to 11 presented better prognosis than the scores of 0–4 (median DFS = 14.3 vs. 4.9 months, p < 0.0001). The area under ROC curves of the model for 1-, 2-, and 3-year DFS were 0.754, 0.705, and 0.666, respectively, and DCA confirmed that the risk model showed more clinical benefits than clinical risk score. Calibration plot for the probability of DFS at 1 or 3 years verified an optimal agreement between prediction and actual observation. In the course of our research, compared with pure NACT, a higher proportion of desmoplastic HGP (dHGP) was detected in patients treated with NACT plus cetuximab (p = 0.030), and the use of cetuximab was an independent factor for decreased replacement HGP (rHGP) and increased dHGP (p = 0.049). Conclusion Our model is concise, comprehensive, and high efficient, which may contribute to better predicting the prognosis of patients with CRLMs with NACT before the liver resection. In addition, we observed an unbalanced distribution of HGPs as well.
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Affiliation(s)
- Zhenyuan Zhou
- School of The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xin Han
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Diandian Sun
- School of The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhiying Liang
- School of The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Wei Wu
- Cancer Hospital of University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, China
- *Correspondence: Haixing Ju, ; Wei Wu,
| | - Haixing Ju
- Cancer Hospital of University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, China
- *Correspondence: Haixing Ju, ; Wei Wu,
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The prognostic significance of a histological response to preoperative chemotherapy in patients with synchronous colorectal liver metastases. Int Surg 2021. [DOI: 10.9738/intsurg-d-21-00014.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective: Preoperative chemotherapy (PC) for colorectal liver metastasis (CRLM) is widely used to improve prognosis, but its clinical benefit has not been fully established. This study aimed to assess the effectiveness of PC for synchronous CRLM and the correlation between the histological response to PC and survival. Summary of Background Data: We enrolled 69 patients who underwent initial hepatectomy for synchronous CRLM between 2004 and 2018 at Gifu University Hospital. Methods: We retrospectively analyzed the clinicopathological factors and outcomes of 69 patients who underwent hepatectomy after receiving PC (PC group: n = 43) or who underwent upfront hepatectomy (non-PC group: n = 26). In the PC group, the patients were divided into the Grade 1 (n = 27) and Grade 2/3 (n = 16) groups according to their histological responses to PC. Results: The median survival and 5-year overall survival (OS) rates were 80.9 months and 61.5%, respectively, in the PC group and 71.7 months and 61.5%, respectively, in the non-PC group ( P = 0.867). Regarding recurrence-free survival (RFS) and remnant liver-RFS, there were no significant differences between the two groups ( P = 0.087 and 0.291). However, in a subgroup analysis, the median 5-year OS, RFS, and remnant liver RFS were significantly longer in the Grade 2/3 than Grade 1 group ( P = 0.008, P = 0.002, and P < 0.001, respectively). Conclusions: Some patients benefit from PC, and the histological response to PC had prognostic significance for patients with synchronous CRLM.
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Zhang C, Wang X, Han J, Zhang R, Chen Z, Li Y, Ma X, Zhang G, Fan J, Chen J. Histological tumor response to neoadjuvant chemotherapy correlates to Immunoscore in colorectal cancer liver metastases patients. J Surg Oncol 2021; 124:1431-1441. [PMID: 34406653 DOI: 10.1002/jso.26651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/02/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND This study investigated the correlation between tumor regression grade (TRG) score and Immunoscore, and prognostic values of TRG score and a risk score in colorectal cancer liver metastases (CRLMs) patients after neoadjuvant chemotherapy. METHODS Patients undergoing neoadjuvant chemotherapy from 2014 to 2019 were selected. TRG score and Immunoscore were evaluated in 200 CRLMs. A risk score combining TRG score, Immunoscore, and clinical risk score (CRS) was defined and divided patients into the low-, medium-, and high-risk groups. Differences in relapse-free survival (RFS) and overall survival (OS) between groups were determined. RESULTS The densities of CD3+ and CD8+ immune cells were higher in TRG1-3 group than in TRG4-5 group, and the ratio of high Immunoscores was higher in TRG1-3 group than in TRG4-5 group (60.0% vs. 15.8%, p < 0.001). Patients in TRG1-3 group had significantly longer RFS and OS than those in TRG4-5 group. The low-risk group shows a significantly higher 2-year RFS and 5-year OS rate than the medium- and high-risk group (RFS: 59.9%, 36.2%, and 6.4%, p < 0.001; OS: 82.0%, 41.0%, and 16.9%, p < 0.001). CONCLUSION TRG score may be proposed to evaluate the prognosis of neoadjuvant chemotherapy and may be used for predicting the postoperative survival of CRLMs.
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Affiliation(s)
- Chong Zhang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiangyu Wang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jiahao Han
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Rui Zhang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhenmei Chen
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Yitong Li
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaochen Ma
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Guo Zhang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jie Fan
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jinhong Chen
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
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Histopathological and Immune Prognostic Factors in Colo-Rectal Liver Metastases. Cancers (Basel) 2021; 13:cancers13051075. [PMID: 33802446 PMCID: PMC7959473 DOI: 10.3390/cancers13051075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Clinical management of colo-rectal liver metastasis would benefit from a refined stratification of patients in prognostic groups, in order to identify the best therapeutic option. Efforts are ongoing in the definition of parameters associated with clinical behaviors, which could help classifying patients in clinically relevant groups. Here we aimed at discussing the recent advances in this field, and we introduced current and new promising candidates, such as morphological tumor features and immune components, which have been showing significant association with survival. Some of these parameters are slowly reaching the clinic and further efforts are ongoing in the attempt to combine them in multiparametric scores. Abstract Prognostic studies are increasingly providing new tools to stratify colo-rectal liver metastasis patients into clinical subgroups, with remarkable implications in terms of clinical management and therapeutic choice. Here, the strengths and hurdles of current prognostic tools in colo-rectal liver metastasis are discussed. Alongside more classic histopathological parameters, which capture features related to the tumor component, such as tumor invasion, tumor growth pattern and regression score, we will discuss immune mediators, which are starting to be considered important features. Their objective quantification has shown significant results in prognostication studies, with most of the work focused on adaptive immune cells, namely T cells. As for macrophages, they are only starting to be appreciated and we will present recent advances in evaluation of macrophage morphological features. Deeper knowledge acquired by multiparametric analyses is rapidly uncovering the variety of immune players that should be assessed. The future projection is to implement deep-learning histopathological tools and to integrate histopathological and immune metrics in multiparametric scores, with the ultimate objective to achieve a deeper resolution of the tumor features and their relevance for colo-rectal liver metastasis.
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Behrenbruch C, Prabhakaran S, Udayasiri D D, Michael M, Hollande F, Hayes I, Heriot AG, Knowles B, Thomson BN. Association between imaging response and survival following neoadjuvant chemotherapy in patients with resectable colorectal liver metastases: A cohort study. J Surg Oncol 2021; 123:1263-1273. [PMID: 33524184 DOI: 10.1002/jso.26400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/12/2020] [Accepted: 01/18/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND The association between the imaging response (structural or metabolic) to neoadjuvant chemotherapy (neoCT) before colorectal liver metastasis (CRLM) and survival is unclear. METHOD A total of 201 patients underwent their first CRLM resection. A total of 94 (47%) patients were treated with neoCT. A multivariable, Cox proportional hazard regression analysis was performed to compare overall survival (OS) and progression-free survival (PFS) between response groups. RESULTS Multivariable regression analysis of the CT/MRI (n = 94) group showed no difference in survival (OS and PFS) in patients who had stable disease/partial response (SD/PR) or complete response (CR) versus patients who had progressive disease (PD) (OS: HR, 0.36 (95% CI: 0.11-1.19) p = .094, HR, 0.78 (95% CI: 0.13-4.50) p = .780, respectively), (PFS: HR, 0.70 (95% CI: 0.36-1.35) p = .284, HR, 0.51 (0.18-1.45) p = .203, respectively). In the FDG-PET group (n = 60) there was no difference in the hazard of death for patients with SD/PR or CR versus patients with PD for OS or PFS except for the PFS in the small CR subgroup (OS: HR, 0.75 (95% CI: 0.11-4.88) p = .759, HR, 1.21 (95% CI: 0.15-9.43) p = .857), (PFS: HR, 0.34% (95% CI: 0.09-1.22), p = .097, HR, 0.17 (95% CI: 0.04-0.62) p = .008, respectively). CONCLUSION There was no convincing evidence of association between imaging response to neoCT and survival following CRLM resection.
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Affiliation(s)
- C Behrenbruch
- Sir Peter MacCallum Department of Oncology, Victorian Comprehensive Cancer Centre, The University of Melbourne, Melbourne, Australia.,Department of General Surgical Specialties, The Royal Melbourne Hospital, Parkville, Australia.,Department of Clinical Pathology, Victorian Comprehensive Cancer Centre, The University of Melbourne, Melbourne, Australia
| | - S Prabhakaran
- Department of General Surgical Specialties, The Royal Melbourne Hospital, Parkville, Australia
| | - D Udayasiri D
- Department of General Surgical Specialties, The Royal Melbourne Hospital, Parkville, Australia.,Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, Parkville, Australia.,Colorectal Surgery Unit, The Royal Melbourne Hospital, Parkville, Australia
| | - M Michael
- Sir Peter MacCallum Department of Oncology, Victorian Comprehensive Cancer Centre, The University of Melbourne, Melbourne, Australia.,Department of Medical Oncology, Victorian Comprehensive Cancer Centre, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - F Hollande
- Department of Clinical Pathology, Victorian Comprehensive Cancer Centre, The University of Melbourne, Melbourne, Australia.,Centre for Cancer Research, Victorian Comprehensive Cancer Centre, University of Melbourne, Melbourne, Australia
| | - I Hayes
- Department of General Surgical Specialties, The Royal Melbourne Hospital, Parkville, Australia.,Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, Parkville, Australia.,Colorectal Surgery Unit, The Royal Melbourne Hospital, Parkville, Australia
| | - A G Heriot
- Sir Peter MacCallum Department of Oncology, Victorian Comprehensive Cancer Centre, The University of Melbourne, Melbourne, Australia.,Department of Cancer Surgery, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, Melbourne, Australia.,Department of Surgery, St Vincent's Hospital, The University of Melbourne, Fitzroy, Australia
| | - B Knowles
- Department of General Surgical Specialties, The Royal Melbourne Hospital, Parkville, Australia
| | - B N Thomson
- Department of General Surgical Specialties, The Royal Melbourne Hospital, Parkville, Australia.,Department of Cancer Surgery, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, Melbourne, Australia.,Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, Parkville, Australia
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