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Kirstein MM, Voigtländer T. Endoskopisches Management von Gallengangskomplikationen nach Leberchirurgie. Zentralbl Chir 2022; 147:398-406. [DOI: 10.1055/a-1857-5775] [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
ZusammenfassungBiliäre Komplikationen stellen häufige Komplikationen nach Leberchirurgie dar und tragen wesentlich zur postoperativen Morbidität und Mortalität bei. Den größten Anteil dieser
machen Gallengangsleckagen und -strikturen aus, wobei die Leckagen nach Cholezystektomie und Leberresektion dominieren und die Strikturen ein wesentliches Problem nach
Lebertransplantationen darstellen. Patienten nach orthotoper Lebertransplantation stellen besonders vulnerable Patienten dar, deren biliäre Komplikationen von denen nach
Cholezystektomie und Leberresektion differieren und niederschwellig sowie mit größter Vorsicht behandelt werden müssen. Mit der endoskopischen retrograden Cholangiografie steht ein
exzellentes Verfahren zur Behandlung dieser Komplikationen zur Verfügung. Die therapeutischen Möglichkeiten beinhalten die endoskopische Sphinkterotomie, die Anlage von Prothesen
und Dilatationen. Mittels dieser Verfahren können Erfolgsraten in bis zu 90% der Fälle erreicht werden. Bei Hepatikojejunostomien bestehen alternative Interventionsmöglichkeiten
wie die ballon- oder motorunterstützte antegrade Enteroskopie, die perkutan-transhepatische Cholangiodrainage oder mit zunehmendem Einsatz die endosonografisch gestützten
Verfahren.
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Affiliation(s)
| | - Torsten Voigtländer
- Gastroenterologie, Deutsches Rotes Kreuz Krankenhaus Clementinenhaus Hannover, Hannover, Deutschland
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Abstract
Intraoperative bleeding and postoperative bleeding are major surgical complications. Tissue sealants, hemostats, and adhesives provide the armamentarium for establishing hemostatic balance, including the tissue sealant fibrin. Fibrin sealants combine advantages including instantaneous effect, biocompatibility, and biodegradability. However, several challenges remain. This review summarizes current fibrin product generations and highlights new trends and potential strategies for future improvement.
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Affiliation(s)
- Matthias Beudert
- Institute of Pharmacy and Food Chemistry, Julius-Maximilians-University Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Marcus Gutmann
- Institute of Pharmacy and Food Chemistry, Julius-Maximilians-University Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Tessa Lühmann
- Institute of Pharmacy and Food Chemistry, Julius-Maximilians-University Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry, Julius-Maximilians-University Würzburg, Am Hubland, 97074 Würzburg, Germany.,Helmholtz Institute for RNA-based Infection Research, Josef-Schneider-Straße 2, 97080 Würzburg, Germany
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Nanji S, Mir ZM, Karim S, Brennan KE, Patel SV, Merchant SJ, Booth CM. Perioperative blood transfusion and resection of colorectal cancer liver metastases: outcomes in routine clinical practice. HPB (Oxford) 2021; 23:404-412. [PMID: 32792307 DOI: 10.1016/j.hpb.2020.06.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/13/2020] [Accepted: 06/30/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Prior work has shown associations between blood transfusion (BT) and inferior outcomes during resection for colorectal cancer liver metastases (CRLM). Herein, we describe short and long-term outcomes relating to perioperative BT in routine clinical practice. METHODS All CRLM resections in Ontario, Canada from 2002 to 2009 were identified using the Ontario Cancer Registry. Log-binomial regression and Cox regression were used to explore factors associated with receipt of BT and the association of BT with 5-year cancer specific (CSS) and overall survival (OS), respectively. RESULTS The study included 1310 patients; 31% (403/1310) had perioperative BT. Transfused patients had longer median length of stay (9 vs. 7 days, p < 0.001), higher 90-day mortality (9% vs. 1%, p < 0.001), greater 90-day readmission (28% vs. 16%, p < 0.001), and inferior 5-year CSS (41% vs. 48%, p = <0.001) and OS (38% vs. 47%, p < 0.001). Transfusion was independently associated with inferior CSS (HR = 1.35, 95% CI: 1.11-1.63) and OS (HR = 1.30, 95% CI: 1.10-1.53), however, excluding 90-day postoperative deaths showed these associations were no longer significant. CONCLUSION Perioperative BT is common in patients undergoing resection of CRLM. While transfusion is associated with greater morbidity, mortality, and inferior survival, after excluding early postoperative deaths, BT does not appear to be independently associated with CSS or OS.
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Affiliation(s)
- Sulaiman Nanji
- Department of Surgery, Queen's University, Kingston, Ontario, Canada; Department of Oncology, Queen's University, Kingston, Ontario, Canada.
| | - Zuhaib M Mir
- Department of Surgery, Queen's University, Kingston, Ontario, Canada; Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Safiya Karim
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada
| | - Kelly E Brennan
- Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario, Canada
| | - Sunil V Patel
- Department of Surgery, Queen's University, Kingston, Ontario, Canada; Department of Oncology, Queen's University, Kingston, Ontario, Canada
| | - Shaila J Merchant
- Department of Surgery, Queen's University, Kingston, Ontario, Canada; Department of Oncology, Queen's University, Kingston, Ontario, Canada
| | - Christopher M Booth
- Department of Oncology, Queen's University, Kingston, Ontario, Canada; Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada; Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario, Canada
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Ward WH, Hui J, Davis CH, Li T, Goel N, Handorf E, Ross EA, Curley SA, Karachristos A, Esnaola NF. Perioperative Outcomes Following Combined Versus Isolated Colorectal and Liver Resections: Insights From a Contemporary, National, Propensity Score-Based Analysis. ANNALS OF SURGERY OPEN 2021; 2:e050. [PMID: 36714392 PMCID: PMC9872861 DOI: 10.1097/as9.0000000000000050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 01/31/2021] [Indexed: 02/01/2023] Open
Abstract
Our objective was to compare outcomes following combined versus isolated resections for metastatic colorectal cancer and/or liver metastases using a large, contemporary national database. Background Controversy persists regarding optimal timing of resections in patients with synchronous colorectal liver metastases. Methods We analyzed 11,814 patients with disseminated colorectal cancer and/or liver metastases who underwent isolated colon, rectal, or liver resections (CRs, RRs, or LRs) or combined colon/liver or rectal/liver resections (CCLRs or CRLRs) in the National Surgical Quality Improvement Program Participant Use File (2011-2015). We examined associations between resection type and outcomes using univariate/multivariate analyses and used propensity adjustment to account for nonrandom receipt of isolated versus combined resections. Results Two thousand four hundred thirty-seven (20.6%); 2108 (17.8%); and 6243 (52.8%) patients underwent isolated CR, RR, or LR; 557 (4.7%) and 469 (4.0%) underwent CCLR or CRLR. Three thousand three hundred ninety-five patients (28.7%) had serious complications (SCs). One hundred forty patients (1.2%) died, of which 113 (80.7%) were failure to rescue (FTR). One thousand three hundred eighty-six (11.7%) patients experienced unplanned readmission. After propensity adjustment and controlling for procedural complexity, wound class, and operation year, CCLR/CRLR was independently associated with increased risk of SC, as well as readmission (compared with LR). CCLR was also independently associated with increased risk of FTR and death (compared with LR). Conclusions Combined resection uniformly confers increased risk of SC and increased risk of mortality after CCLR; addition of colorectal to LR increases risk of readmission. Combined resections are less safe, and potentially more costly, than isolated resections. Effective strategies to prevent SC after combined resections are warranted.
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Affiliation(s)
- William H. Ward
- From the Department of Surgery, Naval Medical Center, Portsmouth, VA
| | - Jane Hui
- Department of Surgery, University of Minnesota, Minneapolis, MN
| | - Catherine H. Davis
- Division of Surgical Oncology and Gastrointestinal Surgery, Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Tianyu Li
- Department of Data Sciences, Dana Farber Cancer Center, Boston, MA
| | - Neha Goel
- Department of Surgery, University of Miami, Miami, FL
| | - Elizabeth Handorf
- Biostatistics and Bioinformatics Facility, Fox Chase Cancer Center, Philadelphia, PA
| | - Eric A. Ross
- Biostatistics and Bioinformatics Facility, Fox Chase Cancer Center, Philadelphia, PA
| | | | | | - Nestor F. Esnaola
- Division of Surgical Oncology and Gastrointestinal Surgery, Department of Surgery, Houston Methodist Hospital, Houston, TX
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Ito T, Sugiura T, Okamura Y, Yamamoto Y, Ashida R, Uesaka K. The impact of posthepatectomy liver failure on long-term survival after hepatectomy for colorectal liver metastasis. HPB (Oxford) 2019; 21:1185-1193. [PMID: 30777694 DOI: 10.1016/j.hpb.2019.01.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/04/2019] [Accepted: 01/18/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Postoperative complications affect both the short-term and long-term outcomes. The aim of this study was to identify specific prognostic factors among complications after hepatectomy for colorectal liver metastasis (CRLM). METHODS Between 2002 and 2014, 427 patients underwent initial hepatectomy for CRLM. The clinicopathological parameters including postoperative complications were evaluated to identify the prognostic factors for the overall (OS) and relapse-free survival (RFS). RESULTS One hundred and forty-nine patients (34%) developed postoperative complications, including surgical site infection (n = 49, 11.4%), bile leakage (n = 41, 9.6%), posthepatectomy liver failure (PHLF) (n = 26, 6.0%), and pulmonary complication (n = 20, 4.6%). The independent predictors of RFS included primary nodal metastasis, abnormal CA19-9 levels, extrahepatic metastasis, bilateral CRLMs, ≥5 CRLMs, preoperative chemotherapy, lack of adjuvant chemotherapy and PHLF. The 5-year RFS rates in patients with and without PHLF were 8% and 32%, respectively (P < 0.001). The independent prognostic factors for OS included primary nodal metastasis, abnormal CA19-9 levels, extrahepatic metastasis, positive surgical margins, preoperative chemotherapy, lack of adjuvant chemotherapy and PHLF. The 5-year OS rates in patients with and without PHLF were 31% and 63%, respectively (P = 0.004). CONCLUSIONS Among the complications, only PHLF was associated with decreased long-term survival after hepatectomy for CRLM as well as tumor-specific prognostic factors.
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Affiliation(s)
- Takaaki Ito
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan.
| | - Teiichi Sugiura
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Yukiyasu Okamura
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Yusuke Yamamoto
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Ryo Ashida
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Katsuhiko Uesaka
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
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Al-Saeedi M, Fonouni H, Kashfi A, Ghamarnejad O, Majlesara A, Gharabaghi N, Stahlheber O, Kraus TW, Mehrabi A, Kulu Y. Mechanical strength of biliary defect closure after topical sealing: Comparison of four sealants in a porcine model. Asian J Surg 2019; 42:723-730. [PMID: 30600147 DOI: 10.1016/j.asjsur.2018.11.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 11/18/2018] [Accepted: 11/28/2018] [Indexed: 10/27/2022] Open
Abstract
BACKGROUND/OBJECTIVE Biliary leakage is a potential complication of liver resection and is still a concern. The aim of the present study was to evaluate the effectiveness of four routinely used sealants in preventing bile leakage under pressure from an induced perforation of the gallbladder in a porcine model. METHODS Forty Landrace pigs were randomly assigned to one of five groups. These included a control group (n = 8) and one group each for the sealants TachoSil®, TissuCol Duo®, Coseal®, and FloSeal® (n = 8 per group). In the control group, the perforation was left unsealed. To evaluate the biliostatic potential of the sealants, we measured the pressure that was needed to induce leakage (mmHg) and the gallbladder volume (cc) at the time of leakage in each group. RESULTS A significantly higher mean pressure was required to induce leakage in the sealant groups compared with the control group. However, the biliostatic effects were heterogeneous among the sealant groups. Sealants with the highest to lowest effectiveness were TachoSil, Coseal, TissuCol, and FloSeal. The mean gallbladder volume at the time of leakage also varied between sealant groups. CONCLUSION Biliostatic properties are markedly improved by the use of modern sealants compared with using no sealant. However, the advantages and disadvantages of using sealants should be carefully considered in each clinical situation. The effectiveness of the sealants should be evaluated in chronic and clinical studies.
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Affiliation(s)
- Mohammad Al-Saeedi
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Hamidreza Fonouni
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Arash Kashfi
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Omid Ghamarnejad
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Ali Majlesara
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Negin Gharabaghi
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Oliver Stahlheber
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Thomas W Kraus
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Arianeb Mehrabi
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Yakup Kulu
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany.
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7
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Bignami P, Doci R, Montalto F, Fissi S, di Bartolomeo M, Gennari L. Feasibility of Intraportal Chemotherapy with Fluorouracil and Folinic Acid Immediately after Hepatic Resection for Colorectal Metastases. TUMORI JOURNAL 2018; 81:96-101. [PMID: 7778225 DOI: 10.1177/030089169508100205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background About 50% of recurrence after resection of hepatic metastases from colorectal cancer remain confined to the liver. Adjuvant locoregional treatments could reduce the failure rate, but these treatments have been scantily investigated. Experimental models have shown that both intra-arterial chemotherapy (IAC) and intraportal chemotherapy (IPC) in adjuvant setting were able to reduce metastatic growth, but IPC should be initiated in the immediate postoperative period. Aims To evaluate the feasibility of immediate postoperative IPC of fluorouracil (5-FU) plus folinic acid (FA) in a consecutive series of patients undergoing hepatic resection for metastatic colorectal cancer. Methods Forty-three consecutive patients underwent hepatic resection. The first 25 (Control Group = CG) received only surgery; the latter 18 (Treated Group = TG) were candidate to postoperative IPC of 5-FU 750 mg/m2 plus FA 20 mg/m2/day continuous infusion for 8 days. One patient was not treated owing to bleeding, thus only 17 received the treatment. Results Postoperative morbidity was 14%, equally distributed in both groups. Biochemical hepatic parameters of TG were not statistically different from those of CG. Five patients (29%) developed systemic toxicity: one hematologic grade 4; 3 mucositis grade 3 and one allergic erythema. Three of these patients had been treated by systemic chemotherapy less than one year before. Discussion IPC of 5-FU plus FA in the immediate postoperative period has not yet been tested. The schedule we have investigated neither affected the postoperative outcome, nor influenced hepatic function and regeneration. Systemic toxicity was evident and severe mainly in patients already pretreated by systemic chemotherapy. In these patients, however, toxicity did not affect further outcome. This study confirms the feasibility of immediate intraportal chemotherapy after hepatic resection.
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Affiliation(s)
- P Bignami
- Divisione di Chirurgia dell'Apparato Digerente, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milano, Italy
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Schicho A, Pereira PL, Michalik K, Beyer LP, Stroszczynski C, Wiggermann P. Safety and efficacy of transarterial chemoembolization with degradable starch microspheres (DSM-TACE) in the treatment of secondary liver malignancies. Onco Targets Ther 2018; 11:345-350. [PMID: 29391811 PMCID: PMC5769599 DOI: 10.2147/ott.s147852] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose To evaluate the safety and efficacy of degradable starch microspheres (DSM) as embolic agents in transarterial chemoembolization (TACE) in the treatment of secondary liver metastases. Methods This was a national, multicenter observational study. Primary endpoints were safety and treatment response according to Modified Response Evaluation Criteria in Solid Tumors (mRECIST) criteria. Results A total of 77 DSM-TACE procedures were performed in 20 patients. Minor immediate adverse events (AEs) were epigastric pain with an incidence of 45.5% (35/77), and nausea and vomiting at an incidence of 23.4% (18/77). Delayed minor AEs were epigastric pain in 13/77 (16.9%) treatments and nausea and vomiting in 10 (13.0%) treatments. No severe AEs were documented. Therapeutic efficacy of DSM-TACE procedures according to mRECIST was as follows: complete response 0/77, partial response 17/77, stable disease 33/77 and progressive disease 6/77, no data was available for 21/77 treatments. Overall, objective response was achieved in 8 of 20 patients (40.0%). Conclusion DSM as embolic agent for TACE is safe in the treatment of liver metastases. An objective response in 40.0% of patients and disease control in 64.9% of procedures was achieved, and this should lead to further evaluation of DSM-TACE as treatment option for nonresectable liver metastases.
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Affiliation(s)
- Andreas Schicho
- Department of Radiology, University Hospital Regensburg, Regensburg
| | - Philippe L Pereira
- Department of Radiology, Minimal-invasive Therapies and Nuclear Medicine, SLK Kliniken Heilbronn, Heilbronn, Germany
| | | | - Lukas P Beyer
- Department of Radiology, University Hospital Regensburg, Regensburg
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McLoughlin JM, Jensen EH, Malafa M. Resection of Colorectal Liver Metastases: Current Perspectives. Cancer Control 2017; 13:32-41. [PMID: 16508624 DOI: 10.1177/107327480601300105] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Metastases to the liver is the leading cause of death in patients with colorectal cancer. METHODS The authors review the data on diagnosis and management of this clinical problem, and they discuss management options that can be considered. RESULTS Complete surgical resection of metastases from colorectal cancer that are localized to the liver results in 5-year survival rates ranging from 26% to 40%. CONCLUSIONS By adding modalities such as targeted systemic therapy and other "local" treatments for liver metastases, further gains in survival are anticipated.
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Affiliation(s)
- James M McLoughlin
- Gastrointestinal Tumor Program, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612-9497, USA
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10
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Bisschop C, van Dijk TH, Beukema JC, Jansen RLH, Gelderblom H, de Jong KP, Rutten HJT, van de Velde CJH, Wiggers T, Havenga K, Hospers GAP. Short-Course Radiotherapy Followed by Neoadjuvant Bevacizumab, Capecitabine, and Oxaliplatin and Subsequent Radical Treatment in Primary Stage IV Rectal Cancer: Long-Term Results of a Phase II Study. Ann Surg Oncol 2017; 24:2632-2638. [PMID: 28560600 PMCID: PMC5539276 DOI: 10.1245/s10434-017-5897-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Indexed: 12/12/2022]
Abstract
Background In a Dutch phase II trial conducted between 2006 and 2010, short-course radiotherapy followed by systemic therapy with capecitabine, oxaliplatin, and bevacizumab as neoadjuvant treatment and subsequent radical surgical treatment of primary tumor and metastatic sites was evaluated. In this study, we report the long-term results after a minimum follow-up of 6 years. Methods Patients with histologically confirmed rectal adenocarcinoma with potentially resectable or ablatable metastases in liver or lungs were eligible. Follow-up data were collected for all patients enrolled in the trial. Overall and recurrence-free survival were calculated using the Kaplan–Meier method. Results Follow-up data were available for all 50 patients. After a median follow-up time of 8.1 years (range 6.0–9.8), 16 patients (32.0%) were still alive and 14 (28%) were disease-free. The median overall survival was 3.8 years (range 0.5–9.4). From the 36 patients who received radical treatment, two (5.6%) had a local recurrence and 29 (80.6%) had a distant recurrence. Conclusions Long-term survival can be achieved in patients with primary metastatic rectal cancer after neoadjuvant radio- and chemotherapy. Despite a high number of recurrences, 32% of patients were alive after a median follow-up time of 8.1 years.
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Affiliation(s)
- C Bisschop
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - T H van Dijk
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - J C Beukema
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - R L H Jansen
- Department of Medical Oncology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - K P de Jong
- Department of Hepato-Pancreato-Biliary Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - H J T Rutten
- Department of Surgery, Catharina Hospital, Eindhoven, The Netherlands.,GROW: School of Oncology and Developmental Biology, University of Maastricht, Maastricht, The Netherlands
| | - C J H van de Velde
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - T Wiggers
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - K Havenga
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - G A P Hospers
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
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11
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Kim CW, Lee JL, Yoon YS, Park IJ, Lim SB, Yu CS, Kim TW, Kim JC. Resection after preoperative chemotherapy versus synchronous liver resection of colorectal cancer liver metastases: A propensity score matching analysis. Medicine (Baltimore) 2017; 96:e6174. [PMID: 28207557 PMCID: PMC5319546 DOI: 10.1097/md.0000000000006174] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This study aimed to determine the prognostic effects of preoperative chemotherapy for colorectal cancer liver metastasis (CLM).We retrospectively evaluated 2 groups of patients between January 2006 and August 2012. A total of 53 patients who had ≥3 hepatic metastases underwent resection after preoperative chemotherapy (preoperative chemotherapy group), whereas 96 patients who had ≥3 hepatic metastases underwent resection with a curative intent before chemotherapy for CLM (primary resection group). A propensity score (PS) model was used to compare the both groups.The 3-year disease-free survival (DFS) rates were 31.7% and 20.4% in the preoperative chemotherapy and primary resection groups, respectively (log-rank = 0.015). Analyzing 32 PS matched pairs, we found that the DFS rate was significantly higher in the preoperative chemotherapy group than in the primary resection group (3-year DFS rates were 34.2% and 16.8%, respectively [log-rank = 0.019]). Preoperative chemotherapy group patients had better DFSs than primary resection group patients in various multivariate analyses, including crude, multivariable, average treatment effect with inverse probability of treatment weighting model and PS matching.Responses to chemotherapy are as important as achieving complete resection in cases of multiple hepatic metastases. Preoperative chemotherapy may therefore be preferentially considered for patients who experience difficulty undergoing complete resection for multiple hepatic metastases.
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Affiliation(s)
| | | | | | | | | | | | - Tae W. Kim
- Department of Medical Oncology, University of Ulsan College of Medicine, Institute of Innovative Cancer Research and Asan Medical Center, Seoul, Korea
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12
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Ratti F, Cipriani F, Reineke R, Catena M, Paganelli M, Comotti L, Beretta L, Aldrighetti L. Intraoperative monitoring of stroke volume variation versus central venous pressure in laparoscopic liver surgery: a randomized prospective comparative trial. HPB (Oxford) 2016; 18:136-144. [PMID: 26902132 PMCID: PMC4814622 DOI: 10.1016/j.hpb.2015.09.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 09/22/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Central venous pressure (CVP) is used as a marker of cardiac preload to control intraoperative blood loss in open hepatectomies, while its reliability in laparoscopy is less certain. The aim of this randomized prospective trial was to evaluate the outcome of laparoscopic resections performed with stroke volume variation (SVV) or CVP monitoring. METHODS All candidates for laparoscopic liver resection were assigned randomly to SVV or to CVP groups. Outcome was evaluated included conversion rate, cause of conversion, intraoperative blood loss, need for transfusions, length of surgery and postoperative results. RESULTS Ninety consecutive patients were enrolled: both SVV and CVP groups included 45 patients each and were comparable in terms of patient and disease characteristics. A reduced rate of conversion was recorded in the SVV compared to the CVP group (6.7% and 17.8% respectively, p = 0.02). Blood loss was lower in the SVV group (150 mL), compared to the CVP group (300 mL, p = 0.04). Morbidity, mortality, length of stay and functional recovery were comparable. On multivariate analysis, lesion location, extent of hepatectomy and type of cardiac preload monitoring were associated significantly to risk of conversion. CONCLUSION SVV monitoring in laparoscopic liver surgery improves intraoperative outcome, thus enhancing the benefits of the minimally-invasive approach and fast-track protocols.
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Affiliation(s)
- Francesca Ratti
- Division of Hepatobiliary Surgery, IRCCS San Raffaele Hospital, Milano, Italy,Correspondence Francesca Ratti, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milano. Tel: +39 02 26437811/7808, +39 348 2411961. Fax: +39 02 26437807.
| | - Federica Cipriani
- Division of Hepatobiliary Surgery, IRCCS San Raffaele Hospital, Milano, Italy
| | - Raffaella Reineke
- Department of Anaesthesiology and Intensive Care, IRCCS San Raffaele Hospital, Milano, Italy
| | - Marco Catena
- Division of Hepatobiliary Surgery, IRCCS San Raffaele Hospital, Milano, Italy
| | - Michele Paganelli
- Division of Hepatobiliary Surgery, IRCCS San Raffaele Hospital, Milano, Italy
| | - Laura Comotti
- Department of Anaesthesiology and Intensive Care, IRCCS San Raffaele Hospital, Milano, Italy
| | - Luigi Beretta
- Department of Anaesthesiology and Intensive Care, IRCCS San Raffaele Hospital, Milano, Italy
| | - Luca Aldrighetti
- Division of Hepatobiliary Surgery, IRCCS San Raffaele Hospital, Milano, Italy
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Xie M, Zhu J, He X, Yang Z, Chen X, Lan P, Lian L. Liver Metastasis from Colorectal Cancer in the Elderly: Is Surgery Justified? Dig Dis Sci 2015; 60:3525-35. [PMID: 26173502 DOI: 10.1007/s10620-015-3789-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 06/29/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND The elderly population with liver metastasis from colorectal cancer has been increasing. As the potentially curative treatment, the role of liver resection in the elderly remains undetermined. AIMS This study provides a meta-analysis on the outcome of liver resection of colorectal liver metastasis in patients aged over 70. METHODS PubMed, Embase, Ovid, Web of Science, and Cochrane databases from the years 2000 to 2015 were searched for eligible studies. Data on perioperative mortality, postoperative complications, and survival were collected. RESULTS Twelve retrospective studies with a total of 11,285 patients (2498 elderly patients and 8787 younger patients) were identified. The elderly (>70 years old) were associated with a similar overall complication rate (30.5 vs. 28.0%; OR 1.08; 95% CI 0.91-1.28; p = 0.39) and a higher 30-day mortality (OR 1.92; 95% CI 1.12-3.31; p = 0.02) after liver resection of colorectal liver metastasis (CRLM). The overall survival showed a significant difference in favor of the younger patients (HR 0.76; 95% CI 0.65-0.89; p = 0.0007). However, with regard to disease-free survival, there was no significant difference between elderly and younger patients (HR 0.93; 95% CI 0.82-1.06; p = 0.30). CONCLUSION Liver resection of CRLM is relatively safe in carefully selected elderly patients. Liver resection should be offered to selected elderly patients with CRLM.
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Affiliation(s)
- Minghao Xie
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, 26 Yuancun Erheng Rd, Guangzhou, 510655, Guangdong, People's Republic of China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Jinling Zhu
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, 26 Yuancun Erheng Rd, Guangzhou, 510655, Guangdong, People's Republic of China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Xiaosheng He
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, 26 Yuancun Erheng Rd, Guangzhou, 510655, Guangdong, People's Republic of China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Zihuan Yang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Xinlin Chen
- Department of Preventive Medicine and Biostatistics, Basic Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, People's Republic of China
| | - Ping Lan
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, 26 Yuancun Erheng Rd, Guangzhou, 510655, Guangdong, People's Republic of China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
| | - Lei Lian
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, 26 Yuancun Erheng Rd, Guangzhou, 510655, Guangdong, People's Republic of China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
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14
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Rectal cancer with synchronous liver metastases: Do we have a clear direction? Eur J Surg Oncol 2015; 41:1570-7. [DOI: 10.1016/j.ejso.2015.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 09/07/2015] [Indexed: 12/12/2022] Open
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15
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Yin Z, Huang X, Ma T, Jin H, Lin Y, Yu M, Jian Z. Postoperative Complications Affect Long-Term Survival Outcomes Following Hepatic Resection for Colorectal Liver Metastasis. World J Surg 2015; 39:1818-27. [DOI: 10.1007/s00268-015-3019-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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16
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Yang S, Alibhai SMH, Kennedy ED, El-Sedfy A, Dixon M, Coburn N, Kiss A, Law CHL. Optimal management of colorectal liver metastases in older patients: a decision analysis. HPB (Oxford) 2014; 16:1031-42. [PMID: 24961482 PMCID: PMC4487755 DOI: 10.1111/hpb.12292] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 04/22/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND Comparative trials evaluating management strategies for colorectal cancer liver metastases (CLM) are lacking, especially for older patients. This study developed a decision-analytic model to quantify outcomes associated with treatment strategies for CLM in older patients. METHODS A Markov-decision model was built to examine the effect on life expectancy (LE) and quality-adjusted life expectancy (QALE) for best supportive care (BSC), systemic chemotherapy (SC), radiofrequency ablation (RFA) and hepatic resection (HR). The baseline patient cohort assumptions included healthy 70-year-old CLM patients after a primary cancer resection. Event and transition probabilities and utilities were derived from a literature review. Deterministic and probabilistic sensitivity analyses were performed on all study parameters. RESULTS In base case analysis, BSC, SC, RFA and HR yielded LEs of 11.9, 23.1, 34.8 and 37.0 months, and QALEs of 7.8, 13.2, 22.0 and 25.0 months, respectively. Model results were sensitive to age, comorbidity, length of model simulation and utility after HR. Probabilistic sensitivity analysis showed increasing preference for RFA over HR with increasing patient age. CONCLUSIONS HR may be optimal for healthy 70-year-old patients with CLM. In older patients with comorbidities, RFA may provide better LE and QALE. Treatment decisions in older cancer patients should account for patient age, comorbidities, local expertise and individual values.
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Affiliation(s)
- Simon Yang
- Division of General Surgery, University of TorontoToronto, ON
| | - Shabbir MH Alibhai
- Department of Medicine, University Health NetworkToronto, ON,Department of Health Policy Management & Evaluation, University of TorontoToronto, ON
| | - Erin D Kennedy
- Division of General Surgery, University of TorontoToronto, ON,Department of Health Policy Management & Evaluation, University of TorontoToronto, ON,Division of General Surgery, Mount Sinai HospitalToronto, ON
| | - Abraham El-Sedfy
- Department of Surgery, Saint Barnabas Medical CenterLivingston, NJ
| | - Matthew Dixon
- Department of Surgery, Maimonides Medical CenterBrooklyn, NY
| | - Natalie Coburn
- Division of General Surgery, University of TorontoToronto, ON,Department of Health Policy Management & Evaluation, University of TorontoToronto, ON,Division of General Surgery, Sunnybrook Health Sciences CentreToronto, ON
| | - Alex Kiss
- Department of Health Policy Management & Evaluation, University of TorontoToronto, ON,Institute for Clinical Evaluative SciencesToronto, ON
| | - Calvin HL Law
- Division of General Surgery, University of TorontoToronto, ON,Department of Health Policy Management & Evaluation, University of TorontoToronto, ON,Division of General Surgery, Sunnybrook Health Sciences CentreToronto, ON,Correspondence, Calvin H.L. Law, Division of General Surgery, Sunnybrook Health Sciences Centre, 2075 Bayview Ave, Suite T2-025, Toronto, Ontario, Canada M4N 3M5. Tel: +1 416 480 4825. Fax: +1 416 480 5804. E-mail:
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Debakey forceps crushing technique for hepatic parenchymal transection in liver surgery: a review of 100 cases and ergonomic advantages. HPB SURGERY : A WORLD JOURNAL OF HEPATIC, PANCREATIC AND BILIARY SURGERY 2014; 2014:861829. [PMID: 25009367 PMCID: PMC4070417 DOI: 10.1155/2014/861829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 05/22/2014] [Indexed: 11/18/2022]
Abstract
Introduction and Objective. Bleeding is an important complication in liver transections. To determine the safety and efficacy of Debakey forceps for liver parenchymal transection and its ergonomic advantages over clamp crushing method we analysed our data. Methods. We used Debakey crushing technique in 100 liver resections and analysed data for transection time, transfusion rate, morbidity, mortality, hospital stay, influence of different types of liver conditions, and ergonomi features of Debakey forceps. Results. Mean age, transection time and hospital stay of 100 patients were 52.38 ± 17.44 years, 63.36 ± 33.4 minutes, and 10.27 ± 5.7 days. Transection time, and hospital stay in patients with cirrhotic liver (130.4 ± 44.4 mins, 14.6 ± 5.5 days) and cholestatic liver (75.8 ± 19.7 mins, 16.5 ± 5.1 days) were significantly greater than in patients with normal liver (48.1 ± 20.1 mins, 6.7 ± 1.8 days) (P < 0.01). Transection time improved significantly with experience (first fifty versus second fifty cases-70.2 ± 31.1 mins versus 56.5 ± 34.5 mins, P < 0.04). Qualitative evaluation revealed that Debakey forceps had ergonomic advantages over Kelly clamp. Conclusions. Debakey forceps crushing technique is safe and effective for liver parenchymal transection in all kinds of liver. Transection time improves with surgeon's experience. It has ergonomic advantages over Kelly clamp and is a better choice for liver transection.
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Lau LF, Williams DS, Lee ST, Scott AM, Christophi C, Muralidharan V. Metabolic response to preoperative chemotherapy predicts prognosis for patients undergoing surgical resection of colorectal cancer metastatic to the liver. Ann Surg Oncol 2014; 21:2420-8. [PMID: 24595797 DOI: 10.1245/s10434-014-3590-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND Biological characteristics of colorectal cancer liver metastases (CRCLM) are increasingly recognized as major determinants of patient outcome. The purpose of this study was to evaluate the prognostic value of metabolic response to preoperative chemotherapy as quantified by (18)F-FDG positron emission tomography (PET) for patients undergoing liver resection of CRCLM. METHODS All patients (n = 80) who had staging PET before liver resection for CRCLM at Austin Health in Melbourne between 2004 and 2011 were included. Thirty-seven patients had PET and CT imaging before and after preoperative chemotherapy. Semiquantitative PET parameters-maximum standardized uptake variable (SUVmax), metabolic tumour volume (MTV), and total glycolytic volume (TGV)-were derived. Metabolic response was determined by the proportional change in PET parameters (∆SUVmax, ∆MTV, ∆TGV). Prognostic scores, CT RECIST response, and tumour regression grading (TRG) were also assessed. Correlation to recurrence-free (RFS) and overall survival (OS) was assessed using Kaplan-Meier survival and multivariate analysis. RESULTS Semiquantitative parameters on staging PET before chemotherapy were not predictive of prognosis, whereas all parameters after chemotherapy were prognostic for RFS and OS. Only ∆SUVmax was predictive of RFS and OS on multivariate analysis. Patients with metabolically responsive tumours had an OS of 86 % at 3 years vs. 38 % with nonresponsive or progressive tumours (p = 0.003). RECIST and TRG did not predict outcome. CONCLUSIONS Tumour metabolic response to preoperative chemotherapy as quantified by PET is predictive of prognosis in patients undergoing resection of CRCLM. Assessing metabolic response uniquely characterizes tumour biology, which may allow future optimization of patient and treatment selection.
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Affiliation(s)
- Lawrence F Lau
- Department of Surgery, Austin Hospital, University of Melbourne, Heidelberg, VIC, Australia,
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19
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Comparison of two different transection techniques in liver surgery-an experimental study in a porcine model. Langenbecks Arch Surg 2013; 398:909-15. [PMID: 23784675 DOI: 10.1007/s00423-013-1094-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 06/10/2013] [Indexed: 01/28/2023]
Abstract
AIMS Postoperative morbidity and mortality after liver resection is closely related to the degree of intraoperative blood loss; the majority of which occurs during transection of the liver parenchyma. Many approaches and devices have therefore been developed to limit bleeding, but none has yet achieved perfect results up to now. The aim of this standardized chronic animal study was to compare the safety and efficacy of the LigaSure™ Vessel Sealing System (LVSS) with the stapler technique, which is one of the modern techniques for transecting the parenchyma in liver surgery. METHODS Sixteen pigs underwent a left liver resection (LLR). Eight pigs received a LLR by means of an Endo GIA, whereas the other eight pigs underwent liver parenchymal transection followed by simultaneous sealing by the LVSS. The operating time, transection time, blood loss during transection, and time of hemostasis were measured on the day of LLR (postoperative day 0/POD 0). Animals were re-explored on postoperative day 7 (POD 7) and the transection surface of remnant liver was observed for fluid collection (hematoma, biloma, and abscess), necrosis, and other pathologies. A biopsy was taken from the area of transection for histopathological examination. RESULTS All animals survived until POD 7. Operating time and transection time of the liver parenchyma on POD 0 was significantly shorter in the stapler group. There was no significant difference between the two groups in terms of blood loss during transection, time of hemostasis and number of sutures for hemostasis on POD 0, morbidity rate, as well as the histopathological examination on POD 7. Furthermore, the material costs were significantly higher in the stapler group than in the LVSS group. CONCLUSION In this standardized chronic animal study concerning transection of the parenchyma in liver surgery, LVSS seems not only to be safe, but also comparable with the stapler technique in terms of morbidity and mortality. Additionally, LVSS significantly reduces material costs. However, the transection time is significantly longer for LVSS than for the stapler resection technique.
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Matsuda A, Matsumoto S, Seya T, Matsutani T, Kishi T, Yokoi K, Wang P, Uchida E. Does postoperative complication have a negative impact on long-term outcomes following hepatic resection for colorectal liver metastasis?: a meta-analysis. Ann Surg Oncol 2013; 20:2485-92. [PMID: 23620215 DOI: 10.1245/s10434-013-2972-z] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Indexed: 12/31/2022]
Abstract
BACKGROUND The negative impact of postoperative complications (POCs) on long-term outcomes is well documented for several cancer surgeries, but conclusive evidence has yet to be provided on the influence of POCs on long-term oncological outcomes after hepatic resection for colorectal liver metastasis (CRLM). METHODS Studies published through February 2012 evaluating the oncological impact of POCs after hepatectomy for CRLM were identified by an electronic literature search. Finally, 4 studies were identified and included in the meta-analysis. The main outcome measures were 5-year disease-free survival (DFS) and overall survival (OS). A meta-analysis was performed using the DerSimonian-Laird random-effects models to compute odds ratio (OR) along with 95 % confidence intervals (95 % CI). RESULTS The outcomes of 2,280 patients were studied. Meta-analysis of 5-year DFS data extracted from three studies demonstrated a significant reduction in 5-year DFS after POCs, with an OR of 1.98 (95 % CI = 1.33-2.96; P = .0008). Meta-analysis of 5-year OS data extracted from four studies demonstrated a significant reduction in 5-year OS after POCs, with an OR of 1.68 (95 % CI = 1.25-2.27; P = .0006). No differences between study heterogeneity were observed in either the DFS or the OS analyses. CONCLUSIONS This study provides persuasive evidence that POCs following hepatic resection for CRLM have significant adverse oncological outcomes. These findings emphasize the need for meticulous surgical technique and careful perioperative management to minimize POCs.
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Affiliation(s)
- Akihisa Matsuda
- Department of Surgery, Nippon Medical School Chiba-Hokuso Hospital, Chiba, Japan.
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21
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Bleeding in Hepatic Surgery: Sorting through Methods to Prevent It. HPB SURGERY : A WORLD JOURNAL OF HEPATIC, PANCREATIC AND BILIARY SURGERY 2012; 2012:169351. [PMID: 23213268 PMCID: PMC3506885 DOI: 10.1155/2012/169351] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 10/23/2012] [Indexed: 12/22/2022]
Abstract
Liver resections are demanding operations which can have life threatening complications although they are performed by experienced liver surgeons. The parameter “Blood Loss” has a central role in liver surgery, and different strategies to minimize it are a key to improve results. Moreover, recently, new technologies are applied in the field of liver surgery, having one goal: safer and easier liver operations. The aim of this paper is to review the different principal solutions to the problem of blood loss in hepatic surgery, focusing on technical aspects of new devices.
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Muralidharan V, Kwok M, Lee ST, Lau L, Scott AM, Christophi C. Prognostic ability of 18F-FDG PET/CT in the assessment of colorectal liver metastases. J Nucl Med 2012; 53:1345-51. [PMID: 22797376 DOI: 10.2967/jnumed.112.102749] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
UNLABELLED Modern multidisciplinary therapy for colorectal liver metastases (CRLM) is associated with significant morbidity and must be adapted to the patient's relative risk. The tools currently available to risk-stratify patients are limited. This study assessed the prognostic utility of metabolic measurements derived from(18)F-FDG PET compared with previously proposed prognostic scoring systems. METHODS Preoperative (18)F-FDG PET/CT studies from a series of 30 patients who underwent liver resection for CRLM after neoadjuvant chemotherapy were evaluated. Quantitative (18)F-FDG PET analysis calculated the maximum and mean standardized uptake value, metabolic tumor volume (MTV), and tumor glycolytic volume (TGV) as measures of the metabolic activity of tumors. The predictive value of these parameters was compared with that of 4 prognostic scores developed by Fong, Iwatsuki, Nordlinger, and Rees. RESULTS High MTV and TGV in patients before metastasectomy were significantly associated with poorer overall survival (MTV: P = 0.001; TGV: P = 0.004) and recurrence-free survival (MTV: P = 0.001, TGV; P = 0.002). Maximum and mean standardized uptake value did not show any significant predictive ability. Of the prognostic scores, prediction of outcome was most accurate using the Basingstoke index (area under the curve, 0.898). CONCLUSION Assessment of metabolic tumor burden with volumetric (18)F-FDG PET parameters appears to be a valuable adjunct in determining the biology of CRLM before surgical resection and may enable better risk stratification of patients.
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Loganathan A, Linley JE, Rajput I, Hunter M, Lodge JPA, Sandle GI. Basolateral potassium (IKCa) channel inhibition prevents increased colonic permeability induced by chemical hypoxia. Am J Physiol Gastrointest Liver Physiol 2011; 300:G146-53. [PMID: 20966032 PMCID: PMC3025504 DOI: 10.1152/ajpgi.00472.2009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Major liver resection is associated with impaired intestinal perfusion and intestinal ischemia, resulting in decreased mucosal integrity, increased bacterial translocation, and an increased risk of postoperative sepsis. However, the mechanism by which ischemia impairs intestinal mucosal integrity is unclear. We therefore evaluated the role of Ca(2+)-sensitive, intermediate-conductance (IK(Ca)) basolateral potassium channels in enhanced intestinal permeability secondary to chemical hypoxia. The effects of chemical hypoxia induced by 100 μM dinitrophenol (DNP) and 5 mM deoxyglucose (DG) on basolateral IK(Ca) channel activity and whole cell conductance in intact human colonic crypts, and paracellular permeability (G(S)) in isolated colonic sheets, were determined by patch-clamp recording and transepithelial electrical measurements, respectively. DNP and DG rapidly stimulated IK(Ca) channels in cell-attached basolateral membrane patches and elicited a twofold increase (P = 0.004) in whole cell conductance in amphotericin B-permeabilized membrane patches, changes that were inhibited by the specific IK(Ca) channel blockers TRAM-34 (100 nM) and clotrimazole (CLT; 10 μM). In colonic sheets apically permeabilized with nystatin, DNP elicited a twofold increase (P = 0.005) in G(S), which was largely inhibited by the serosal addition of 50 μM CLT. We conclude that, in intestinal epithelia, chemical hypoxia increases G(S) through a mechanism involving basolateral IK(Ca) channel activation. Basolateral IK(Ca) channel inhibition may prevent or limit increased intestinal permeability during liver surgery.
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Affiliation(s)
- A. Loganathan
- 1Leeds Institute of Molecular Medicine and ,2Department of Hepatobiliary Surgery, St. James's University Hospital; and
| | - J. E. Linley
- 3Institute of Membrane and Systems Biology, University of Leeds, Leeds, United Kingdom
| | - I. Rajput
- 1Leeds Institute of Molecular Medicine and ,2Department of Hepatobiliary Surgery, St. James's University Hospital; and
| | - M. Hunter
- 3Institute of Membrane and Systems Biology, University of Leeds, Leeds, United Kingdom
| | - J. P. A. Lodge
- 2Department of Hepatobiliary Surgery, St. James's University Hospital; and
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Cockbain AJ, Masudi T, Lodge JPA, Toogood GJ, Prasad KR. Predictors of blood transfusion requirement in elective liver resection. HPB (Oxford) 2010; 12:50-5. [PMID: 20495645 PMCID: PMC2814404 DOI: 10.1111/j.1477-2574.2009.00126.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Accepted: 07/26/2009] [Indexed: 12/12/2022]
Abstract
BACKGROUND Liver resection remains major surgery frequently requiring intra-operative blood transfusion. Patients are typically over cross-matched, and with blood donor numbers falling, cross-matching and transfusion policies need rationalizing. AIM To identify predictors of peri-operative blood transfusion. METHODS A retrospective review of elective hepatic resections over a 4-year period was performed. Twenty-six variables including clinicopathological variables and intra-operative data were collated, together with the number of units of blood cross-matched and transfused in the immediate peri-operative period (48 h). Multivariate regression analysis was performed to identify independent predictors of blood transfusion, and a Risk Score for transfusion constructed. RESULTS Five hundred and eighty-nine patients were included in the study, and were cross-matched with a median 10 units of blood. Seventeen per cent of patients received a blood transfusion; median transfusion when required was 2 units. Regression analysis identified seven factors predictive of transfusion: haemoglobin <12.5 g/dL, pre-operative biliary drainage, coronary artery disease, largest tumour >3.5 cm, cholangiocarcinoma, redo resection and extended resection (5+ segments). Patients were stratified into high or low risk of transfusion based on Risk Score with a sensitivity of 73% [receiver-operating characteristic (ROC) 0.77]. CONCLUSIONS Patients undergoing elective liver resection are over-cross-matched. Patients can be classified into high and low risk of transfusion using a Risk Score, and cross-matched accordingly.
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Affiliation(s)
- Andrew J Cockbain
- Department of Hepatobiliary and Transplant Surgery, St James's University Hospital, Beckett Street, Leeds, UK
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25
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Correlation between postoperative infective complications and long-term outcomes after hepatic resection for colorectal liver metastasis. Ann Surg 2010; 251:91-100. [PMID: 19858702 DOI: 10.1097/sla.0b013e3181bfda3c] [Citation(s) in RCA: 163] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The impact of postoperative morbidity, and in particular infective complications on long-term outcomes, following hepatic resection for colorectal liver metastasis (CRLM) is not widely published. OBJECTIVE To evaluate the effect of postoperative complications on disease recurrence and overall survival in patients undergoing hepatic resection for CRLM. METHODS All patients undergoing hepatic resection for CRLM from January 1993 and March 2007 were identified, and postoperative complications analyzed. Patients who died of postoperative complications within 30 days of surgery were excluded form the study. Postoperative complications were graded using a validated system of classification. Complications were further classified into infective and noninfective complication groups and the primary end points of the study were disease free survival (DFS) and overall survival (OS) at 5 years. RESULT A total of 705 patients underwent hepatic resection in the study period. Median follow-up was 38 months. Operative morbidity and mortality were 28% and 3.6%, respectively. The total number of patients was 197 (28%) with complications, and 508 (72%) without complications. The 5 year DFS and OS for those with and without complications were: 13% versus 26% (P < 0.001) and 24% versus 37% (P < 0.001), respectively. Multivariate analysis showed inflammatory response to tumor score, blood transfusion, tumor number >8, and postoperative sepsis to be independent factors associated with DFS, and inflammatory response to tumor, tumor number >8, and postoperative sepsis to be independent predictors for OS. Intra-abdominal and respiratory infection but not wound infections were associated with poorer long-term outcomes. CONCLUSIONS Postoperative complications influence long-term outcomes in hepatic resection for CRLM. Specifically, postoperative sepsis is an independent predictor of disease free and overall survival. Thorough preoperative optimization, meticulous surgical technique and careful management in the postoperative period may reduce the incidence of these complications and influence long-term outcomes.
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Kyoden Y, Imamura H, Sano K, Beck Y, Sugawara Y, Kokudo N, Makuuchi M. Value of prophylactic abdominal drainage in 1269 consecutive cases of elective liver resection. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2009; 17:186-92. [DOI: 10.1007/s00534-009-0161-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 07/27/2009] [Indexed: 12/15/2022]
Affiliation(s)
- Yusuke Kyoden
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
| | - Hiroshi Imamura
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Juntendo; 2-1-1, Hongo, Bunkyo-ku Tokyo 113-8421 Japan
| | - Keiji Sano
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
| | - Yoshifumi Beck
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
| | - Yasuhiko Sugawara
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
| | - Norihiro Kokudo
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
| | - Masatoshi Makuuchi
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Graduate School of Medicine; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8655 Japan
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Konopke R, Kersting S, Bunk A, Dietrich J, Denz A, Gastmeier J, Saeger HD. Colorectal liver metastasis surgery: analysis of risk factors predicting postoperative complications in relation to the extent of resection. Int J Colorectal Dis 2009; 24:687-97. [PMID: 19214537 DOI: 10.1007/s00384-009-0669-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/21/2009] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS Despite advances in diagnosis and treatment, the rate of complications after resection for colorectal liver metastases remains high. An awareness of risk factors is essential for the rates of morbidity and mortality to fall to optimal levels. MATERIALS AND METHODS Of the 240 patients who underwent resection for the first manifestation of colorectal liver metastases, 49 patients with lobectomy or extended hepatectomy (major resections) and 58 with wedge resections within only one liver segment (minor resections) form the basis of this report. A total of 16 variables were analyzed to find the risk factors linked to postoperative morbidity and mortality. RESULTS/FINDINGS Thirty-four patients (31.8%) suffered postoperative complications, and one patient died during the hospital stay (0.9%). In the major resection group, multivariate analysis showed that neoadjuvant chemotherapy [odds ratio (OR): 2.4; p = 0.005], vascular clamping (OR: 1.4; p = 0.008), and intraoperative blood loss with transfusion of three to six packed red cell units (OR: 1.2; p = 0.029) were significantly associated with postoperative morbidity. Vascular clamping was an independent predictor for biliary fistula (OR: 1.2; p = 0.029). Postoperative temporary liver failure was influenced by neoadjuvant chemotherapy (OR: 3.4; p = 0.010), vascular clamping (OR: 1.5; p = 0.015), and requirement of blood transfusion (OR: 2.1; p = 0.016). After minor resections, only a decreased postoperative serum cholinesterase B level was an independent predictor for complications (OR: 2.2; p = 0.001), as well as for hemorrhage (OR: 1.6; p = 0.023). Postoperative mortality was not predicted by any of the factors that were analyzed. INTERPRETATION/CONCLUSION Factors for complications differ depending on the extent of colorectal liver metastasis resection. Only knowledge and particular consideration of these factors may provide for an optimal postoperative outcome for the individual patient.
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Affiliation(s)
- Ralf Konopke
- Department of General, Thoracic, and Vascular Surgery, University of Dresden, Dresden, Germany
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Barbet J, Kraeber-Bodéré F, Chatal JF. What can be expected from nuclear medicine tomorrow? Cancer Biother Radiopharm 2008; 23:483-504. [PMID: 18771353 DOI: 10.1089/cbr.2008.010-u] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Imaging can take advantage of developments in "omics" approaches and go from routine individual biomarkers to multiple-scale biomarker profiles. Imaging structural, functional, metabolic, cellular, and molecular changes will be made possible by multimodality hybrid techniques, such as positron emission tomography-magnetic resonance imaging. Imaging should predict treatment response, look at stratification for specific treatment modalities, and look at the "omic" characterization of an individual patient or a specific tumor. This should lead to the development of "personalized" medicine. In cancer radiotherapy, patient responses should be accurately predicted. In specific cases, proton and hadrontherapy will be further enhanced by the irradiation dose delivered to the tumors. For disseminated or metastatic disease, targeted radionuclide therapy is an effective addition to the arsenal against cancer. The clinical efficacy of radiolabeled antibodies has been clearly demonstrated in lymphoma as well as that of radiolabeled peptides derived from somatostatin in the treatment of neuroendocrine tumors. Preliminary studies now show interesting results in solid tumors, too. Even if the number of objective clinical responses based on tumor shrinkage is small, targeted radionuclide therapy increases progression-free survival or overall survival in some specific cases where tumor burden is small. Avenues for further improvement are multiple and include combination with other therapeutic modalities, development of new approaches (e.g., small molecules, pretargeting, and antibody alternatives). Using alpha-emitting radionuclides is another possibility for specific diseases, such as leukemias, multiple myeloma, or brain tumor remnants.
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Affiliation(s)
- Jacques Barbet
- Centre de Recherche en Cancérologie Nantes-Angers, INSERM, Université de Nantes, Nantes, France
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Abstract
A number of cancers present with synchronous or metachronous hepatic metastases. Historically, many of these patients were considered unresectable and were treated with either systemic chemotherapy or supportive care. Today, a variety of options exist for the management of hepatic metastases. Newer agents for systemic therapy continue to be introduced and are providing improved progression-free and overall survival and increased resectability of liver metastases. However, complete surgical resection of isolated hepatic metastases remains the optimal management for these patients. Surgical interventions can be offered to patients with hepatic-only metastases. Hepatic artery chemotherapy represents an adjunct for those patients undergoing resection and can improve survival. This benefit may be even more pronounced when combined with systemic chemotherapy. Newer generation biologic agents can improve results. New therapeutic modalities to treat lesions that are unresectable include ablative techniques such as radiofrequency ablation (RFA) and cryoablation. This article will examine modalities of diagnosis of hepatic metastases and highlight the data regarding hepatic resection for metastases of several types of primary cancers, the rationale for, and efficacy of, hepatic arterial chemotherapy, in both the postoperative adjuvant setting and in unresectable liver disease, and review the current literature for ablative techniques in the treatment of liver metastases.
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Affiliation(s)
- Cletus A Arciero
- Department of Surgical Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
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Analysis of Prognostic Factors Influencing Long-term Survival After Hepatic Resection for Metastatic Colorectal Cancer. World J Surg 2007; 32:93-103. [DOI: 10.1007/s00268-007-9285-y] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Pulitanò C, Arru M, Bellio L, Rossini S, Ferla G, Aldrighetti L. A risk score for predicting perioperative blood transfusion in liver surgery. Br J Surg 2007; 94:860-5. [PMID: 17380562 DOI: 10.1002/bjs.5731] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND It would be desirable to predict which patients are most likely to benefit from preoperative autologous blood donation. This aim of this study was to develop a point scoring system for predicting the need for blood transfusion in liver surgery. METHODS The medical records of 480 consecutive patients who underwent hepatic resection were analysed. The data set was split randomly into a derivation set of two-thirds and a validation set of one-third. Univariable analysis was carried out to determine the association between clinicopathological factors and blood transfusion. Significant variables were entered into a multiple logistic regression model, and a transfusion risk score (TRS) was developed. The accuracy of the system was validated by calculating the area under the receiver-operator characteristic (ROC) curve. RESULTS Factors associated with blood transfusion in multivariable analysis included preoperative haemoglobin concentration below 12.5 g/dl, largest tumour more than 4 cm, need for exposure of the vena cava, need for an associated procedure, and cirrhosis. Each variable was assigned one point, and the total score was compared with the transfusion status of each patient in the validation set. The TRS accurately predicted the likelihood of blood transfusion. In the validation set the area under the ROC curve was 0.89. CONCLUSION Use of the TRS could lead to substantial saving by improving the cost-effectiveness of the autologous blood donation programme.
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Affiliation(s)
- C Pulitanò
- Department of Surgery-Liver Unit, Scientific Institute San Raffaele, Vita-Salute San Raffaele University, Milan, Italy
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Liersch T, Meller J, Bittrich M, Kulle B, Becker H, Goldenberg DM. Update of carcinoembryonic antigen radioimmunotherapy with (131)I-labetuzumab after salvage resection of colorectal liver metastases: comparison of outcome to a contemporaneous control group. Ann Surg Oncol 2007; 14:2577-90. [PMID: 17570017 DOI: 10.1245/s10434-006-9328-x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2006] [Revised: 12/03/2006] [Accepted: 12/07/2006] [Indexed: 12/24/2022]
Abstract
BACKGROUND We tested whether adjuvant radioimmunotherapy (RAIT) given after R0 resection of liver metastases (LM) of colorectal cancer is safe and can improve survival. Resection of LM from colorectal cancer is the standard of care in this setting, yet two thirds will eventually relapse, and adjuvant systemic chemotherapy has failed to improve survival. METHODS Twenty-three patients who underwent R0 resection for LM of colorectal cancer received a dose of 40 to 60 mCi/m(2) (131)I-labetuzumab, a humanized monoclonal antibody against carcinoembryonic antigen. Safety (n = 23), disease-free survival, and overall survival (n = 19) were analyzed, and efficacy was then compared retrospectively with a similar contemporaneous group of control patients (n = 19) treated at the same institution during the same time period but without RAIT. RESULTS At a median follow-up of 91 months (95% confidence interval [CI], 68.0 months to infinity), the median overall survival for RAIT patients was 58.0 months (95% CI, 55.0 months to infinity), versus 31.0 months (95% CI, 26.0 months to infinity) at a 51-month median follow-up for the controls (P = .032). The median disease-free survival for RAIT patients was 18.0 months (95% CI, 11.0-31.0 months), versus 12.0 months (95% CI, 6.5-27.0 months) for the controls (P = .565). Corresponding survival rates (Kaplan-Meier analyses) were estimated to be 94.7% at 1 year, 78.9% at 2 years, 68.4% at 3 years, and 42.1% at 5 years with RAIT and 94.7%, 68.4%, 36.8%, and 15.8%, respectively, for the controls. RAIT was beneficial independently of bilobar involvement, size and number of LM, or resection margins. Transient myelosuppression was the principal adverse effect. CONCLUSIONS This first evidence of a promising survival advantage of adjuvant RAIT after long-term follow-up of colorectal cancer patients given salvage resection of LM warrants confirmation in a prospective randomized trial.
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Affiliation(s)
- Torsten Liersch
- Department of General Surgery, University of Göttingen, Göttingen, Germany
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Hewes JC, Dighe S, Morris RW, Hutchins RR, Bhattacharya S, Davidson BR. Preoperative chemotherapy and the outcome of liver resection for colorectal metastases. World J Surg 2007; 31:353-64; discussion 365-6. [PMID: 17219289 DOI: 10.1007/s00268-006-0103-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Neoadjuvant systemic chemotherapy is being increasingly used prior to liver resection for colorectal metastases. Oxaliplatin has been implicated in causing structural changes to the liver parenchyma, and such changes may increase the morbidity and mortality of surgery. PATIENTS AND METHODS A retrospective study was undertaken of 101 consecutive patients who had undergone liver resection for colorectal metastases in two HPB centers. Preoperative demographic and premorbid data were gathered along with liver function tests and tumor markers. A subjective assessment of the surgical procedure was noted, and in-hospital morbidity and mortality were calculated. The effect of preoperative chemotherapy on short-term and long-term outcome was analyzed, and actuarial 1 and 3 year survival was determined. RESULTS Patients who received neoadjuvant chemotherapy had a higher number of metastases (median 2, range 1-8 versus median 1, range 1-5; P = 0.019) and more had synchronous tumors (24 patients versus 8; P < 0.001). Overall morbidity was 37% and hospital mortality was 3.9%. Operative and in-hospital outcome was not influenced by chemotherapy. Long-term survival was worse in patients who had received preoperative chemotherapy (actuarial 3-year survival 62% versus 80%; P = 0.04). CONCLUSIONS This study shows no evidence that neoadjuvant chemotherapy, and in particular oxaliplatin, increases the risk associated with liver resection for colorectal metastases. Long-term outcome is reduced in patients receiving preoperative chemotherapy, although they have more advanced disease.
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Affiliation(s)
- J C Hewes
- University Department of Surgery, Academic Division of Surgical Specialties, The Royal Free Hospital and Royal Free campus, Royal Free and University College School of Medicine, UCL, London, United Kingdom, NW3 2QG
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Kucuktulu U, Alhan E, Tekelioglu Y, Ozekin A. The effects of pentoxifylline on liver regeneration after portal vein ligation in rats. Liver Int 2007; 27:274-9. [PMID: 17311624 DOI: 10.1111/j.1478-3231.2006.01419.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AIM To determine the effects of pentoxifylline, a methyl xanthine derivative on hepatic cell production of uninterferred lobe after portal vein branch ligation. METHODS Sixty-six rats were randomly allocated into 9 groups with 8 rats in PVL groups and 6 rats in sham operation groups. The portal branches of the median and the lateral liver lobes, corresponding to approximately 70% of the liver volume were ligated in the PVL groups. The control group received 0.9% NaCl solution. The rats in the treatment groups received pentoxifylline at the dose of 50 mg/kg/dy. After 1, 2, 4 days of portal vein ligation in both PVL and PVNL lobes the levels of adenine nucleotides were determined and flowcytometric analysis of cell cycles were performed. RESULTS On the first day of portal branch ligation energy charge was significantly lower, in pentoxifylline treated group comparing to pentoxifylline untreated group, both in PVL and PVNL lobes (P<0.05). Proliferative indexes were 0.38 and 0.29 in pentoxifylline treated and pentoxifylline untreated PVNL lobes respectively (P<0.05). CONCLUSION Pentoxifylline treatment resulted in an increase of percentage of calls entering mitosis phase on the first day after PVL, somehow accelerating the regeneration process.
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Affiliation(s)
- Uzer Kucuktulu
- Department of General Surgery, Karadeniz Technical University, Trabzon, Turkey.
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Romano F, Garancini M, Caprotti R, Bovo G, Conti M, Perego E, Uggeri F. Hepatic resection using a bipolar vessel sealing device: technical and histological analysis. HPB (Oxford) 2007; 9:339-44. [PMID: 18345316 PMCID: PMC2225510 DOI: 10.1080/13651820701504181] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Blood loss and bile leakage are well-known risk factors for morbidity and mortality during liver resection. Bleeding usually occurs during parenchymal transection, and surgical technique should be considered an important factor in preventing intraoperative and postoperative complications. OBJECTIVE Many approaches and devices have been developed to limit bleeding and bile leakage. The aim of the present study was to determine whether a bipolar vessel sealing device allows a safe and careful liver transection without routine inflow occlusion, achieving a satisfactory hemostasis and bile stasis, thus reducing blood loss and bile leak and related complications. PATIENTS AND METHODS A total of 50 consecutive patients (24 males, 26 females, with a mean age of 57 years) underwent major and minor hepatic resections using a bipolar vessel sealing device. A clamp crushing technique followed by energy application was used to perform the parenchymal transection. Inflow occlusion was used when necessary to control blood loss but not as a routine. No other devices were applied to achieve hemostasis. RESULTS The instrument was effective in 45 patients and failed to achieve hemostasis in 5 cases, all of whom had a cirrhotic liver. Median blood loss was 490 ml (range 100-2500 ml) and intraoperative blood transfusions were required in eight cases (16%). Mean operative time was 178 min (range 50-315 min). Inflow occlusion was necessary in 16 (32%) patients. The postoperative complication rate was 24%, with a postoperative hemorrhage in a cirrhotic patient. There was no clinical evidence of bile leak or procedure-related abdominal abscess. CONCLUSION We conclude that the device is a useful tool in standard liver resection, achieving good hemostasis and bile stasis in patients with normal liver parenchyma, but its use should be avoided in cirrhotic patients.
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Affiliation(s)
- Fabrizio Romano
- Department of Surgery, San Gerardo Hospital, University of Milan-Bicocca, Monza, Italy.
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Arciero CA, Sigurdson ER. Liver-directed therapies for patients with primary liver cancer and hepatic metastases. Curr Treat Options Oncol 2006; 7:399-409. [PMID: 16904057 DOI: 10.1007/s11864-006-0008-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Liver cancer, whether primary or metastatic, is a major cause of death throughout the world. The surgical management of these diseases varies according to the extent of disease and the overall health of the patient. Surgical resection of hepatic disease remains the only chance for cure. However, a large proportion of patients with liver cancer are unable to undergo a complete surgical resection. These patients are often treated with liver-directed therapies. Although not as effective as surgical resection, these approaches can help to improve the survival of patients. In patients with primary liver cancer, underlying liver disease often prohibits surgical intervention. However, survival advantages have been gained with the application of percutaneous alcohol injection and radiofrequency ablation (RFA). In patients with hepatic metastases, the number of metastases is often what prevents surgical resection. In these patients, RFA, cryoablation, and hepatic artery infusional therapy have all aided in prolonging survival. As chemotherapeutic agents improve and targeted therapies are developed, more patients will be able to undergo surgical management of their liver cancer, primary or metastatic.
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Affiliation(s)
- Cletus A Arciero
- Department of Surgical Oncology, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
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Baisden JM, Reish AG, Sheng K, Larner JM, Kavanagh BD, Read PW. Dose as a function of liver volume and planning target volume in helical tomotherapy, intensity-modulated radiation therapy-based stereotactic body radiation therapy for hepatic metastasis. Int J Radiat Oncol Biol Phys 2006; 66:620-5. [PMID: 16904845 DOI: 10.1016/j.ijrobp.2006.05.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2006] [Revised: 04/20/2006] [Accepted: 05/09/2006] [Indexed: 12/31/2022]
Abstract
PURPOSE Stereotactic body radiation therapy (SBRT) has been shown to be an effective, well-tolerated treatment for local control of tumors metastatic to the liver. Multi-institutional Phase II trials are examining 60 Gy in 3 fractions delivered by linac-based, 3D-conformal IMRT. HiArt Helical TomoTherapy is a treatment unit that delivers co-planar helical IMRT that is capable of image-guided SBRT. We hypothesized that the maximum tolerable dose (MTD) delivered to a lesion by Helical TomoTherapy-based SBRT could be predicted based on the planning target volume (PTV) and liver volume. METHODS AND MATERIALS To test this, we performed inverse treatment planning and analyzed the dosimetry for multiple hypothetical liver gross tumor volumes (GTV) with conventional PTV expansions. Inverse planning was carried out to find the maximum tolerated SBRT dose up to 60 Gy to be delivered in 3 fractions based on the dose constraint that 700 cc of normal liver would receive less than 15 Gy. RESULTS Regression analysis indicated a linear relationship between the MTD, the PTV and the liver volume, supporting our hypothesis. A predictive equation was generated, which was found to have an accuracy of +/-3 Gy. In addition, dose constraints based on proximity to other normal tissues were tested. Inverse planning for PTVs located at varying distances from the heart, small bowel, and spinal cord revealed a predictable decrease in the MTD as the PTV increased in size or approached normal organs. CONCLUSIONS These data provide a framework for predicting the likely MTD for patients considered for Helical TomoTherapy liver SBRT.
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Affiliation(s)
- Joseph M Baisden
- Department of Radiation Oncology, Medical School, University of Virginia Health System, Charlottesville, VA 22908, USA
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Hayashibe A, Sakamoto K, Shinbo M, Makimoto S, Nakamoto T. New method for prevention of bile leakage after hepatic resection. J Surg Oncol 2006; 94:57-60. [PMID: 16788945 DOI: 10.1002/jso.20548] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The usefulness of fibrin glue and bioabsorbable polyglicolic acid (PGA) felt to prevent the bile leakage was studied. METHODS Eighty-eight patients who underwent hepatic resection without biliary reconstruction from 2001 through 2005 were studied. We divided 88 patients into 37 patients of Group A (who underwent hepatic resection between January 2001 and March 2003) and 51 patients of Group B (who underwent hepatic resection between April 2003 and January 2005). The fibrin glue was applied to the excision site of remnant liver in the patients of Group A. On the other hand, the fibrin glue and bioabsorbable PGA sheet were applied in the patients of Group B. RESULTS In Group A, the post-operative bile leakage occurred in 3 of 37 patients (8.1%). The post-operative bleeding occurred in 1 of 37 patients (2.7%). And the post-operative wound infection occurred in 4 patients (10.8%). In Group B, no post-operative bile leakage and bleeding were observed in 51 patients. And the post-operative wound infection occurred in 3 patients (5.9%). The difference between Groups A and B in the rate of bile leakage was statistically significant. CONCLUSIONS The combination of fibrin glue and bioabsorbable PGA felt was extremely favorable for prevention of bile leakage after hepatic resection.
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Affiliation(s)
- Akira Hayashibe
- Department of Surgery, Kishiwada Tokushukai Hospital, Kishiwada City, Osaka, Japan.
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Shimizu T, Yoshida H, Mamada Y, Taniai N, Matsumoto S, Mizuguchi Y, Yokomuro S, Arima Y, Akimaru K, Tajiri T. Postoperative bile leakage managed successfully by intrahepatic biliary ablation with ethanol. World J Gastroenterol 2006; 12:3450-2. [PMID: 16733869 PMCID: PMC4087883 DOI: 10.3748/wjg.v12.i21.3450] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We report a case of postoperative refractory bile leakage managed successfully by intrahepatic biliary ablation with ethanol. A 75-year-old man diagnosed with hepatocellular carcinoma underwent extended posterior segmentectomy including the caudate lobe and a part of the anterior segment. The hepatic tumor attached to the anterior branch of the bile duct was detached carefully and resected. Fluid drained from the liver surface postoperatively contained high concentrations of total bilirubin, at a constant volume of 150 mL per day. On d 32 after surgery, a fistulogram of the drainage tube demonstrated an enhancement of the anterior bile duct. Endoscopic retrograde cholangiography demonstrated complete obstruction of the proximal anterior bile duct and no enhancement of the peripheral anterior bile duct. On d 46 after surgery, a retrograde transhepatic biliary drainage (RTBD) tube was inserted into the anterior bile duct under open surgery. However, a contrast study of RTBD taken 7 mo post-surgery revealed that the fistula remained patent despite prolonged conservative management, so we decided to perform ethanol ablation of the isolated bile duct. Four mL pure ethanol was injected into the isolated anterior bile duct for ten minutes, the procedure being repeated five times a week. Following 23 attempts, the volume of bile juice reached less than 10 mL per day. The RTBD was clamped and removed two days later. After RTBD removal, the patient had no complaints or symptoms. Follow-up magnetic resonance imaging demonstrated atrophy of the ethanol-injected anterior segment without liver abscess formation.
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Affiliation(s)
- Tetsuya Shimizu
- Graduate School of Medicine, Surgery for Organ Function and Biology Regulation, Nippon Medical School, Bunkyo-ku, Tokyo, Japan.
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Ghassemi KF, Shah JN. Postoperative Bile Duct Injuries. TECHNIQUES IN GASTROINTESTINAL ENDOSCOPY 2006. [DOI: 10.1016/j.tgie.2006.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Durán Giménez-Rico H, García-Aguilar J, Warren RS, Iborra P, Guerrero V. [Liver metastases from colorectal cancer. Is the practice of surgery based on the best clinical evidence possible?]. Cir Esp 2006; 78:75-85. [PMID: 16420801 DOI: 10.1016/s0009-739x(05)70894-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To date, surgical resection remains the only curative treatment for liver metastases from colorectal cancer. However, the evidence supporting this treatment is based on retrospective studies. The lack of level I clinical evidence has stimulated strong interest in identifying the factors predictive of recurrence, and even to use them to create clinical risk scores (assigning one point to each factor for poor prognosis), in which a higher score indicates a poorer prognosis. In the present review, we discuss all these factors, as well as the therapeutic alternatives that improve local disease control. Next, we review all the prospective randomized studies published on this topic, which mainly focus on adjuvant chemotherapy associated with curative surgery with negative margins, with the aim of validating or rejecting this treatment. Lastly, we include the algorithm of the University of California at San Francisco for surgery in liver metastases from colorectal cancer.
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Vollmer CM, Dixon E, Sahajpal A, Cattral MS, Grant DR, Gallinger S, Taylor BR, Greig PD. Water-jet dissection for parenchymal division during hepatectomy. HPB (Oxford) 2006; 8:377-85. [PMID: 18333091 PMCID: PMC2020750 DOI: 10.1080/13651820600839449] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND High-pressure water-jet dissection was originally developed for industry where ultra-precise cutting and engraving were desirable. This technology has been adapted for medical applications with favorable results, but little is understood about its performance in hepatic resections. Blood loss may be limited by the thin laminar liquid-jet effect that provides precise, controllable, tissue-selective dissection with excellent visualization and minimal trauma to surrounding fibrous structures. PATIENTS AND METHODS The efficacy of the Water-jet system for hepatic parenchymal dissection was examined in a consecutive case series of 101 hepatic resections (including 22 living donor transplantation resections) performed over 11 months. Perioperative outcomes, including blood loss, transfusion requirements, complications, and length of stay (LOS), were assessed. RESULTS Three-quarters of the cases were major hepatectomies and 22% were cirrhotic. Malignancy was the most common indication (77%). Median operative time was 289 min. Median estimated blood loss (EBL) was 900 ml for all cases, and only 14% of patients had >2000 ml EBL. Furthermore, EBL was 1000 ml for major resections, 775 ml for living donor resections, 600 ml in cirrhotic patients, and 1950 ml for steatotic livers. In all, 14% of patients received heterologous packed red blood cell (PRBC) transfusions for an average of 0.59 units per case. Median LOS was 7 days. EBL, transfusion requirements, and LOS were slightly increased in the major resection cohort. There was one mortality (1%) overall. These results are equivalent to, or better than, those from our contemporary series of resections performed with ultrasonic dissection. CONCLUSION Water-jet dissection minimizes large blood volume loss, requirements for transfusion, and complications. This initial experience suggests that this precision tool is safe and effective for hepatic division, and compares favorably to other established methods for hepatic parenchymal transection.
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Rees M, Plant G, Bygrave S. Late results justify resection for multiple hepatic metastases from colorectal cancer. Br J Surg 2005. [DOI: 10.1046/j.1365-2168.1997.02749.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nagano Y, Nojiri K, Matsuo K, Tanaka K, Togo S, Ike H, Shimada H. The impact of advanced age on hepatic resection of colorectal liver metastases. J Am Coll Surg 2005; 201:511-6. [PMID: 16183488 DOI: 10.1016/j.jamcollsurg.2005.05.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2005] [Revised: 05/09/2005] [Accepted: 05/10/2005] [Indexed: 01/04/2023]
Abstract
BACKGROUND The aim of this study was to evaluate the impact of patient age on surgical therapy for colorectal liver metastases. STUDY DESIGN Between 1992 and 2004, 212 consecutive patients underwent potentially curative hepatic resection. Sixty-two patients were 70 years or older at the time of resection (older group) and 150 patients were less than 70 years at the time of resection (younger group). RESULTS A proportion of older patients had a history of severe cardiopulmonary disease (32.3%) and respiratory insufficiency (6.5%). Intraoperative variables, such as resected liver volume, operation time, estimated blood loss, and blood transfusion, were not notably different between older and younger patients. Postoperative complications after resection occurred in 19.7% of older patients and at a similar rate (23.3%) in the younger group. Resection mortality was 0% in older patients and 0.49% in younger patients. The 5-year survival rates of older and younger patients were 34.1% and 53.1%, respectively. Compared with younger patients, the overall survival rate of older patients was markedly lower (p<0.01). CONCLUSIONS Advanced chronologic age cannot be regarded as a medical contraindication for hepatic resection of colorectal liver metastases in patients who are more than 70 years of age.
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Affiliation(s)
- Yasuhiko Nagano
- Department of Gastroenterological Surgery, Yokohama City University, Graduate School of Medicine, Yokohama, Japan
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45
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Liersch T, Meller J, Kulle B, Behr TM, Markus P, Langer C, Ghadimi BM, Wegener WA, Kovacs J, Horak ID, Becker H, Goldenberg DM. Phase II trial of carcinoembryonic antigen radioimmunotherapy with 131I-labetuzumab after salvage resection of colorectal metastases in the liver: five-year safety and efficacy results. J Clin Oncol 2005; 23:6763-70. [PMID: 16170184 DOI: 10.1200/jco.2005.18.622] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Although complete resection (R0) of liver metastases (LM) remains the treatment of choice for colorectal cancer (CRC) patients amenable to curative therapy, only approximately one third survive for 5 years. The objective of this phase II study was to evaluate the safety and efficacy of radioimmunotherapy (RAIT) after salvage resection of LM. PATIENTS AND METHODS Twenty-three patients who underwent surgery for LM of CRC received a dose of 40 to 60 mCi/m2 of 131I-labetuzumab, which is a humanized monoclonal antibody against carcinoembryonic antigen. Safety (n = 23), disease-free survival (DFS; n = 19), and overall survival (OS; n = 19) were determined. RESULTS With a median follow-up of 64 months, the median OS time from the first liver resection for RAIT patients was 68.0 months (95% CI, 46.0 months to infinity), and the median DFS time was 18.0 months (95% CI, 11.0 to 31.0 months). The 5-year survival rate was 51.3%. RAIT benefited patients independently of bilobar involvement, size and number of LM, and resection margins. The major adverse effect was transient myelosuppression, resulting mostly in grade < or = 3 neutropenia and/or thrombocytopenia. CONCLUSION Because both the median OS and 5-year survival rates seem to be improved with adjuvant RAIT after complete LM resection in CRC, compared with historical and contemporaneous controls not receiving RAIT, these results justify further evaluation of this modality in a multicenter, randomized trial.
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Affiliation(s)
- Torsten Liersch
- Department of General Surgery, University of Göttingen, Germany.
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46
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Neumann U, Neuhaus P, Langrehr JM. Chirurgische und interventionelle Therapiemöglichkeiten bei Fernmetastasen kolorektaler Karzinome. Visc Med 2005. [DOI: 10.1159/000085389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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47
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Abstract
Liver resection for colorectal metastases can be performed with curative intent in about 15-20% of patients. From a surgical point of view, achieving a radical (R0) resection is of paramount importance. Perioperative mortality is mainly linked to the extent of the resection (class I/II). Results of ischemic or drug-induced preconditioning have been ambiguous, and their clinical use is at most questionable. Five-year survival following primary and repeated liver resection is consistently reported at 30-40%. The options for improving prognosis by purely technical means appear limited. Instead, future strategies must aim at the conversion of primarily irresectable and potentially resectable liver metastases into resectable tumors. This could be achieved preoperatively via portal vein embolisation and neoadjuvant chemotherapy and surgically via sequential resection or a combination of surgery with local ablative therapy. All suggested modalities for primarily inoperable tumors should be systematically evaluated in clinical trials.
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Affiliation(s)
- W O Bechstein
- Klinik für Allgemein- und Gefässchirurgie der Chirurgischen Universitätsklinik Frankfurt/Main.
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48
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Glasgow SC, Chapman WC. Emerging Technology in the Treatment of Colorectal Metastases to the Liver. SEMINARS IN COLON AND RECTAL SURGERY 2005. [DOI: 10.1053/j.scrs.2005.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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Mariette C, Alves A, Benoist S, Bretagnol F, Mabrut JY, Slim K. [Perioperative care in digestive surgery]. ACTA ACUST UNITED AC 2005; 142:14-28. [PMID: 15883504 DOI: 10.1016/s0021-7697(05)80831-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- C Mariette
- Service de chirurgie digestive et générale, Hopital C. Huriez, CHRU, Lille.
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50
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Romano F, Franciosi C, Caprotti R, Uggeri F, Uggeri F. Hepatic surgery using the Ligasure vessel sealing system. World J Surg 2005; 29:110-2. [PMID: 15592913 DOI: 10.1007/s00268-004-7541-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Blood loss, a well-known risk factor for morbidity and mortality during liver resection, occurs during parenchymal transection, so many approaches and devices have been developed to limit bleeding. Surgical technique is an important factor in preventing intraoperative and postoperative complications. The aim of the present study was to determine whether the bipolar vessel sealing device allows a safe and careful liver transection, achieving a satisfactory hemostasis thus reducing blood loss and related complications.A total of 30 consecutive patients (18 male, 12 female with a mean age of 63 years) underwent major and minor hepatic resection in which the bipolar vessel sealing device was used without routine inflow occlusion. A crush technique followed by energy application was used to perform the parenchymal transection. No other devices were applied to achieve hemostasis. The bipolar vessel sealing device was effective in 27 cases of hepatic resection. It failed to achieve hemostasis in three patients, all of whom had a cirrhotic liver. Median blood loss was 250 ml (range: 100-1600 ml), and intraoperative blood transfusions were required in five patients (17%). Mean operative time was 200 minutes (range: 140-360 minutes). There was no clinical evidence of postoperative hemorrhage, bile leak, or intraabdominal abscess. The postoperative complication rate was 17%. The bipolar vessel sealing device is a useful tool in standard liver resection in patients with a normal liver parenchyma, but its use should be avoided in cirrhotic livers.
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Affiliation(s)
- Fabrizio Romano
- Department of Surgery, San Gerardo Hospital, II University of Milan-Bicocca, Via Donizetti 106, 20052 Monza, Italy.
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