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Dasari BVM, Raptis D, Syn N, Serrablo A, Ramia JM, Laurenzi A, Sturesson C, Pawlik TM, Siriwardena AK, Lesurtel M. Development and validation of a novel risk score to predict overall survival following surgical clearance of bilobar colorectal liver metastases. BJS Open 2023; 7:zrad085. [PMID: 37738617 PMCID: PMC10516618 DOI: 10.1093/bjsopen/zrad085] [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: 02/24/2023] [Revised: 07/11/2023] [Accepted: 07/16/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND Bilobar liver metastases from colorectal cancer pose a challenge for obtaining a satisfactory oncological outcome with an adequate future liver remnant. This study aimed to assess the clinical and pathological determinants of overall survival and recurrence-free survival among patients undergoing surgical clearance of bilobar liver metastases from colorectal cancer. METHODS A retrospective international multicentre study of patients who underwent surgery for bilobar liver metastases from colorectal cancer between January 2012 and December 2018 was conducted. Overall survival and recurrence-free survival at 1, 2, 3 and 5 years after surgery were the primary outcomes evaluated. The secondary outcomes were duration of postoperative hospital stay, and 90-day major morbidity and mortality rates. A prognostic nomogram was developed using covariates selected from a Cox proportional hazards regression model, and internally validated using a 3:1 random partition into derivation and validation cohorts. RESULTS A total of 1236 patients were included from 70 centres. The majority (88 per cent) of the patients had synchronous liver metastases. Overall survival at 1, 2, 3 and 5 years was 86.4 per cent, 67.5 per cent, 52.6 per cent and 33.8 per cent, and the recurrence-free survival rates were 48.7 per cent, 26.6 per cent, 19.2 per cent and 10.5 per cent respectively. A total of 25 per cent of patients had recurrent disease within 6 months. Margin positivity and progressive disease at liver resection were poor prognostic factors, while adjuvant chemotherapy in margin-positive resections improved overall survival. The bilobar liver metastases from colorectal cancer-overall survival nomogram was developed from the derivation cohort based on pre- and postoperative factors. The nomogram's ability to forecast overall survival at 1, 2, 3 and 5 years was subsequently validated on the validation cohort and showed high accuracy (overall C-index = 0.742). CONCLUSION Despite the high recurrence rates, overall survival of patients undergoing surgical resection for bilobar liver metastases from colorectal cancer is encouraging. The novel bilobar liver metastases from colorectal cancer-overall survival nomogram helps in counselling and informed decision-making of patients planned for treatment of bilobar liver metastases from colorectal cancer.
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Affiliation(s)
- Bobby V M Dasari
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- Department of HPB Surgery and Liver Transplantation, Queen Elizabeth Hospital, Birmingham, UK
| | - Dimitri Raptis
- Department of HPB Surgery and Liver Transplantation, Royal Free Hospital, London, UK
| | - Nicholas Syn
- Department of HPB Surgery and Liver Transplantation, National University of Singapore, Singapore
| | - Alejandro Serrablo
- HBP Surgical Division, Miguel Servet University Hospital, Zaragoza, Spain
| | - Jose Manuel Ramia
- Department of Hepatobiliary Surgery and Liver Transplantation, Hospital General Universitario de Alicante, Alicante, Spain
| | - Andrea Laurenzi
- Hepatobiliary Surgery and Organ Transplantation, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Christian Sturesson
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Timothy M Pawlik
- Division of Surgery, Oncology, and Health Services Management and Policy, The Ohio State University Wexner Medical Center, Ohio, USA
| | - Ajith K Siriwardena
- Department of Hepatobiliary Surgery, Manchester Royal Infirmary, Manchester, UK
| | - Mickael Lesurtel
- Department of HPB Surgery & Liver Transplantation, Beaujon Hospital—University of Paris Cité, Paris, France
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Real-Time Ultrasound-Navigated Nonanatomical Liver Resection Using a Water-Jet Dissector. J Am Coll Surg 2022; 235:e19-e22. [PMID: 36102539 DOI: 10.1097/xcs.0000000000000393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ausania F, Landi F, Martínez-Pérez A, Sandomenico R, Cuatrecasas M, Pages M, Maurel J, Garcia R, Fuster J, Garcia-Valdecasas JC. Impact of microscopic incomplete resection for colorectal liver metastases on surgical margin recurrence: R1-Contact vs R1 < 1 mm margin width. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2022; 29:449-459. [PMID: 34995418 DOI: 10.1002/jhbp.1107] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/18/2021] [Accepted: 11/29/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Several studies highlighted an inferior outcome of R1 resection for colorectal cancer liver metastases (CRLM); it is still unclear whether directly involved margins (R1-contact) are associated with a poorer outcome compared to R1 < 1 mm. The aim of this study is to analyze the impact on surgical margin recurrence (SMR) of R1-contact vs R1 < 1 mm patients. METHODS Patients who underwent surgery for CRLM between 2009-2018 with both R1 resections on final histology were included and compared in terms of recurrence and survival. Factors associated with SMR were assessed by univariate and multivariate analysis. RESULTS Out of 477, 77 (17.2%) patients showed R1 resection (53 R1-Contact and 24 R1 < 1 mm). Overall recurrence rate was 79.2% (R1 < 1 mm = 70.8% vs R1-contact group = 83%, P = .222). Median disease-free survival (DFS) and disease-specific survival (DSS) were significantly higher in R1 < 1 mm vs R1-contact group (93 vs 55 months; P = .025 and 69 vs 46 months; P = .038, respectively). The SMR rate was higher in R1-contact compared to R1 < 1 mm group (30.2% vs 8.3%; P = .036). At univariate analysis, age, number of metastases, open surgical approach, RAS status, and R1-contact were associated with SMR. At multivariate analysis, R1-contact margin was the only factor independently associated with higher SMR (OR = 5.6; P = .046). CONCLUSIONS R1-contact margin is independently associated with SMR after liver resection for CRLM. Patients with R1-contact margin will also experience poorer DFS and DSS.
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Affiliation(s)
- Fabio Ausania
- Department of General and Digestive Surgery, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Filippo Landi
- Department of General and Digestive Surgery, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | | | - Raffaele Sandomenico
- Department of General and Digestive Surgery, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Miriam Cuatrecasas
- Department of Pathology, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Mario Pages
- Department of Radiology, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Joan Maurel
- Department of Medical Oncology, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Rocio Garcia
- Department of General and Digestive Surgery, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Josep Fuster
- Department of General and Digestive Surgery, Hospital Clínic, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
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Protic M, Krsmanovic O, Solajic N, Kukic B, Nikolic I, Bogdanovic B, Radovanovic Z, Kresoja M, Mannion C, Man YG, Stojadinovic A. Prospective Non-Randomized Study of Intraoperative Assessment of Surgical Resection Margin of Colo-Rectal Liver Metastases. J Cancer 2021; 12:3701-3714. [PMID: 33995645 PMCID: PMC8120181 DOI: 10.7150/jca.58580] [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: 01/23/2021] [Accepted: 04/19/2021] [Indexed: 01/10/2023] Open
Abstract
Introduction: More than 50% of patients with colorectal cancer (CRC) develop liver metastases during the natural course of disease. Surgical resection is currently the most potentially curative method in the treatment of colorectal liver metastases (CRLM). The goal of surgery is to achieve a negative resection margin (RM) of at least 1 mm, which provides the best prognosis for patients. The RM can be assessed by the pathologist of the resected liver specimen (RLS) and by the surgeon intraoperatively. The aim of this research paper is to determine the degree of agreement on intraoperative assessment of the RM by the surgeon and histopathological RM assessment by the pathologist. Material and methods: This prospective non-randomized double-blind study was approved by the Ethics Committee of the Oncology Institute of Vojvodina and registered on ClinicalTrials.gov #NCT04634526. The study was conducted at the Oncology Institute of Vojvodina, Sremska Kamenica, Serbia. An experienced hepatobiliary surgeon assessed RM for every specimen intra-operatively, immediately after CRLM resection. Resected CRLM lesions were analyzed by two experienced pathologists. These data were compared with pathological RM assessment as a “gold standard”. RM of 1 mm or more was rated as negative RM (RM-). Disease-free survival (DFS) and recurrence rate was calculated by RM status defined by surgeon and by pathologist. Results: From 01 January 2015 to 31 August 2019, 98 patients were enrolled in the study. There were 219 RLS with 245 CRLM. The surgeon registered positive RM (RM+) of <1mm in 41 (18.7%) RLS. Taking the result of the histopathological assessment (HPA) as the “gold standard”, it was determined that RM was true positive in 32 (14.6%) cases. False positive RM was found in 9 (4.1%) cases. False negative RM was found in 20 (9.1%) cases. True negative RM was found in 158 (72.2%) cases. Sensitivity of surgical assessment (SA) of RM+ was 61.5% (32/52). Specificity of SA of RM+ was 94.6% (158/167). The positive predictive value (PPV) was 78.0% (32/41), while the negative predictive value (NPV) was 88.8% (158/178). The overall accuracy of the RM+ SA was 86.8% (190/219). There was no statistically significant difference in the assessment of RM+ per RLS by surgeon and pathologists (p=0.061), but it was significant when analyses per patients was performed (p=0.017). Recurrence rate for RM+ patients was 48.1% (13/27, p=0.05) for SA and 35.0% (14/40, p=0.17) for HPA. Three year DFS for RM- and RM+ was 66.5% and 27.9% (p=0.04), respectively, by SA, and 64.8% and 42.1% (p=0.106), respectively, by HPA. Conclusion: Intraoperative assessment of RM- by surgeon of RLS is clinically meaningful. There is not a statistically significant difference in the assessment of RM+ by surgeon and pathologists per RLS, but it was statically significant on a per patient basis. RM determined by surgeon has better prognostic impact on recurrence rate and 1- and 3-year DFS than standard histopathological assessment.
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Affiliation(s)
- Mladjan Protic
- Clinic for Surgical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Olivera Krsmanovic
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.,Armed Forces of Bosnia and Herzegovina, Logistics Command, Doboj, Bosnia and Herzegovina
| | - Nenad Solajic
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.,Department of Pathoanatomical and Laboratory Diagnostics, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Biljana Kukic
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.,Clinic for Internal Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Ivan Nikolic
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.,Clinic for Internal Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Bogdan Bogdanovic
- Clinic for Internal Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Zoran Radovanovic
- Clinic for Surgical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Milana Kresoja
- Clinic for Surgical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Ciaran Mannion
- Department of Pathology, Hackensack University Medical Center, Hackensack, New Jersey, USA.,Department of Pathology, Hackensack Meridian School of Medicine, Nutley, New Jersey, USA
| | - Yan-Gao Man
- Department of Pathology, Hackensack University Medical Center, Hackensack, New Jersey, USA
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Jayme VR, Fonseca GM, Amaral IMA, Coelho FF, Kruger JAP, Jeismann VB, Pinheiro RSN, de Mello ES, Herman P. Infiltrative Tumor Borders in Colorectal Liver Metastasis: Should We Enlarge Margin Size? Ann Surg Oncol 2021; 28:7636-7646. [PMID: 33834322 DOI: 10.1245/s10434-021-09916-w] [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: 12/23/2020] [Accepted: 03/11/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Surgery is the only potentially curative treatment for colorectal cancer liver metastases (CRLMs). Despite an improvement in results following resection, recurrence rates remain high. Many histopathological features have been reported as prognostic factors. Infiltrative borders are known to be associated with worse prognosis; however, margin size has never been evaluated together with the type of tumor border. In the present study, we analyzed the prognosis of patients with resected CRLM according to tumor growth pattern (TGP) and whether a larger margin size would bring any prognostic benefit. PATIENTS AND METHODS Medical records from a prospective database of 645 patients who underwent hepatic resection for CRLM between January 2004 and December 2019 at a single center were reviewed, and 266 patients were included in the analytic cohort. TGP (pushing or infiltrative) was evaluated regarding the impact in overall and disease-free survival. The impact of margin size (≤ or > 1 cm) on survival and hepatic recurrence according to TGP was also evaluated. RESULTS TGP was defined as infiltrative in 182 cases (68.4%) and pushing in 84 patients (31.6%). Patients with infiltrative-type border presented worse overall survival and disease-free survival, as well as higher intrahepatic recurrence (p < 0.05). Larger margin size did not impact the prognosis of patients with infiltrative borders. CONCLUSIONS Patients with infiltrative-type border present worse prognosis and higher intrahepatic recurrence. Larger margin size (> 1 cm) does not change the prognosis in patients with infiltrative border, showing that tumor biology is the most important factor for survival.
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Affiliation(s)
- Vitoria Ramos Jayme
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil.
| | - Gilton Marques Fonseca
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
| | - Isaac Massaud Amim Amaral
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
| | - Fabricio Ferreira Coelho
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
| | - Jaime Arthur Pirola Kruger
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
| | - Vagner Birk Jeismann
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
| | - Rafael Soares Nunes Pinheiro
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
| | - Evandro Sobroza de Mello
- Department of Pathology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, Brazil
| | - Paulo Herman
- Digestive Surgery Division, Liver Surgery Unit, Department of Gastroenterology, Hospital das Clinicas, University of Sao Paulo School of Medicine, São Paulo, SP, Brazil
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Takamoto T, Hashimoto T, Miyata A, Shimada K, Maruyama Y, Makuuchi M. Repeat Hepatectomy After Major Hepatectomy for Colorectal Liver Metastases. J Gastrointest Surg 2020; 24:380-387. [PMID: 30830515 DOI: 10.1007/s11605-019-04154-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 02/02/2019] [Indexed: 01/31/2023]
Abstract
OBJECTIVE This study assessed predictors of survival after repeat hepatectomy and the feasibility of a repeat hepatectomy after a major hepatectomy in the patients with colorectal liver metastases (CLM). BACKGROUND More than half of all patients who receive a curative initial hepatectomy for CLM develop hepatic recurrence, and aggressive indications for a repeat hepatectomy can improve the outcome in selected patients. However, the feasibility of repeat hepatectomy after major hepatectomy remains uncertain, and optimal selection criteria for repeat hepatectomy have not yet been established. METHODS Data were collected retrospectively on 296 CLM patients who underwent an initial curative hepatectomy between 2007 and 2017 at our institution. The postoperative outcomes of patients undergoing a repeat hepatectomy after major hepatectomy were assessed, and independent predictors of survival were investigated. RESULTS After a median follow-up period of 32 months, 247 patients (83%) developed disease recurrence and 122 patients (49%) underwent repeat hepatectomy. The 5-year overall survival (OS) was significantly higher in patients who underwent a repeat hepatectomy than in those who did not receive repeat hepatectomy (51% vs. 19%, respectively; P < 0.001). In a multivariate analysis, an extrahepatic lesion at the time of the repeat hepatectomy (HR, 2.49; P = 0.001) and 5 or more liver tumors at the time of recurrence (HR, 1.88; P = 0.04) remained as independent factors negatively affecting OS after repeat hepatectomy. The type of operative procedure and the intraoperative and postoperative factors at the time of the initial hepatectomy did not have any significant influence on the OS after repeat hepatectomy. No significant difference in OS was found between patients who received repeat hepatectomy after major hepatectomy (n = 43) and those after non-major hepatectomy (n = 79). CONCLUSIONS The operative procedure and the liver tumor status at the time of the initial hepatectomy have little impact on the indications for a repeat hepatectomy for recurrent CLM. Repeat hepatectomy is feasible even if major hepatectomy was initially performed.
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Affiliation(s)
- Takeshi Takamoto
- Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan.
| | - Takuya Hashimoto
- Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Akinori Miyata
- Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Kei Shimada
- Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Yoshikazu Maruyama
- Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Masatoshi Makuuchi
- Division of Hepato-Biliary-Pancreatic and Transplantation Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
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Surgical Strategy Based on Indocyanine Green Test for Chemotherapy-Associated Liver Injury and Long-Term Outcome in Colorectal Liver Metastases. J Gastrointest Surg 2018; 22:1077-1088. [PMID: 29488125 DOI: 10.1007/s11605-018-3712-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/06/2018] [Indexed: 01/31/2023]
Abstract
BACKGROUND It remains unclear whether the presence of chemotherapy-induced liver injury (CALI) or impaired liver functional reserve affects the long-term outcome. This study assessed the applicability and long-term effects of using criteria based on the indocyanine green (ICG) test results in selecting the operative procedure among patients with colorectal liver metastases (CRLM) who had a risk of CALI. STUDY DESIGN CRLM patients who received preoperative chemotherapy including oxaliplatin and/or irinotecan prior to a curative hepatectomy between 2007 and 2017 were included. For each case, the minimum required future remnant liver volume and operative procedure were decided based on the ICG retention rate at 15 min (ICG R15). Patients with an ICG R15 > 10% and who had undergone a major hepatectomy were categorized in a marginal liver functional reserve (MHML) group. RESULTS Overall, 161 patients were included; 77 of them had an ICG R15 > 10%, and 57 had pathological liver injury (PLI). After the median follow-up time of 30.9 months, the 5-year overall survival rate was 36.1%. The presence of an impaired ICG test result or CALI did not negatively impact the overall and recurrence-free survival outcomes. A multivariate analysis revealed that the presence of four or more nodules of liver metastases was the only independent predictor of a poor overall survival. A significantly larger proportion of patients in the MHML group (n = 37) had a 25% or larger increase in splenic volume (30 vs. 13%; P = 0.024). CONCLUSION The presence of an impaired ICG test result or PLI did not affect the long-term outcome after individually selected operative procedure. However, patients undergoing MHML had a higher possibility of developing a > 25% splenic volume increase after hepatectomy.
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Fonseca GM, Herman P, Faraj SF, Kruger JAP, Coelho FF, Jeismann VB, Cecconello I, Alves VAF, Pawlik TM, de Mello ES. Pathological factors and prognosis of resected liver metastases of colorectal carcinoma: implications and proposal for a pathological reporting protocol. Histopathology 2017; 72:377-390. [PMID: 28858385 DOI: 10.1111/his.13378] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Colorectal cancer is a leading cause of death worldwide. The liver is the most common site of distant metastases, and surgery is the only potentially curative treatment, although the recurrence rate following surgery is high. In order to define prognosis after surgery, many histopathological features have been identified in the primary tumour. In turn, pathologists routinely report specific findings to guide oncologists on the decision to recommend adjuvant therapy. In general, the pathological report of resected colorectal liver metastases is limited to confirmation of the malignancy and details regarding the margin status. Most pathological reports of a liver resection for colorectal liver metastasis lack information on other important features that have been reported to be independent prognostic factors. We herein review the evidence to support a more detailed pathological report of the resected liver specimen, with attention to: the number and size of liver metastases; margin size; the presence of lymphatic, vascular, perineural and biliary invasion; mucinous pattern; tumour growth pattern; the presence of a tumour pseudocapsule; and the pathological response to neoadjuvant chemotherapy. In addition, we propose a new protocol for the evaluation of colorectal liver metastasis resection specimens.
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Affiliation(s)
- Gilton M Fonseca
- Digestive Surgery Division, Department of Gastroenterology, University of São Paulo Medical School, São Paulo, Brazil
| | - Paulo Herman
- Digestive Surgery Division, Department of Gastroenterology, University of São Paulo Medical School, São Paulo, Brazil
| | - Sheila F Faraj
- Department of Pathology, São Paulo State Cancer Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Jaime A P Kruger
- Digestive Surgery Division, Department of Gastroenterology, University of São Paulo Medical School, São Paulo, Brazil
| | - Fabricio F Coelho
- Digestive Surgery Division, Department of Gastroenterology, University of São Paulo Medical School, São Paulo, Brazil
| | - Vagner B Jeismann
- Digestive Surgery Division, Department of Gastroenterology, University of São Paulo Medical School, São Paulo, Brazil
| | - Ivan Cecconello
- Digestive Surgery Division, Department of Gastroenterology, University of São Paulo Medical School, São Paulo, Brazil
| | - Venancio A F Alves
- Department of Pathology, São Paulo State Cancer Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Timothy M Pawlik
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, OH, USA
| | - Evandro S de Mello
- Department of Pathology, São Paulo State Cancer Institute, University of São Paulo Medical School, São Paulo, Brazil
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