6669例结直肠癌同时陛和异时性肝转移患者不同治疗策略的预后分析

目的 评价结直肠癌肝转移不同类型及治疗策略对肝转移患者生存的影响.方法 回顾分析复旦大学附属中山医院2000年1月1日至2008年6月31日收治的669例结直肠癌肝转移患者的病例资料.结果 本组患者同时性肝转移379例,异时性[发生肝转移中位时间(21.0±19.6)个月]肝转移290例.患者性别、年龄和肠道原发病灶的部位两组差异无统计学意义(P>0.05);而肝转移灶特征(累及肝叶类型、病灶个数和病灶直径)和术前CEA、CA19-9水平两组差异有统计学意义(P<0.05).手术切除肝转移灶253例,其中同时性肝转移123例,异时性肝转移130例.以2008年10月31日为随访终点,随访率100%.同时性肝转移和异时性肝转移的中位生存时间分别为11和23个月(P<0.01).5年生存率分别为6.4%和11.4%(P<0.01):手术病例与各种非手术治疗(介入、化疗、射频、无水酒精注射和中医中药)病例的中位生存期分别为37个月和5～26个月(P<0.01);5年生存率分别为35.6%和0～3.6%(P<0.05).结论 手术治疗目前仍是结直肠癌肝转移的首选治疗措施;异时性肝转移患者生存率好于同时性肝转移.     

结直肠癌肝转移综合治疗预后因素分析（附317例报告）

目的 探讨影响结直肠癌肝转移以外科手术为主的综合治疗疗效的预后风险因素。方法 回顾性分析北京大学肿瘤医院肝胆胰外一科2005年1月至2015年1月行肝切除手术治疗317例结直肠癌肝转移病人的临床资料及术后随访情况。结果 全组病人1、3、5年总存活率分别为90.5%、54.5%、45.0%。中位生存期43个月。单因素分析结果显示性别、原发灶淋巴结转移、肝转移灶最大径、肝转移灶出现时间、癌胚抗原（CEA）水平及是否存在肝外转移灶是影响预后的因素（P<0.05）;多因素分析结果显示原发灶淋巴结转移、同时性肝转移和CEA>30 μg/L是影响预后的独立危险因素。结论 以外科手术为主的综合治疗可显著改善结直肠癌肝转移病人的长期生存,多种临床风险因素影响病人预后。     

不同方案治疗胃癌同时性肝转移的疗效比较及预后危险因素分析

目的 :探讨手术、化疗、介入及综合治疗对胃癌同时性肝转移患者的临床效果,并分析预后危险因素。方法:回顾性分析106例胃癌同时性肝转移患者的临床资料,比较接受不同方案治疗的生存率,并行单因素和多因素分析预后危险因素。结果:手术组中位生存时间为35(3~65)个月,1、3、5年累计生存率分别为68.6%、45.2%和12.3%;化疗组中位生存时间为16(3~71)个月,1、3、5年累计生存率分别为60.4%、48.4%和9.8%;介入组中位生存时间为34(3~66)个月,1、3、5年累计生存率分别为62.3%、39.7%和11.5%;综合治疗组中位生存时间为39(3~84)个月,1、3、5年累计生存率分别为85.6%、55.9%和19.2%。4组生存率比较差异有统计学意义(χ~2=17.488,P0.01)。单因素分析结果显示肝外转移、肝转移程度、肝转移灶直径、淋巴结转移、胃切除术、TACE、化疗与胃癌同时性肝转移患者生存期有关(P0.05)。多因素分析结果显示,胃癌同时性肝转移患者生存期的独立预后因素包括肝外转移、肝转移程度、淋巴结转移、胃切除术、TACE及化疗(P0.05)。结论:综合治疗是胃癌同时性肝转移最有效的治疗手段,可延长患者生存期,改善预后。     

结直肠癌同时性肝转移治疗46例分析

目的:探讨结直肠癌同时性肝转移的有效治疗方法。方法:对1996～2004年收治的46例结直肠癌同时性肝转移的临床资料和随访资料进行回顾性分析。根据治疗方法的不同分为3组:A组21例,为一期切除原发灶和肝转移灶并经肝动脉和门静脉置泵化疗者;B组15例,为单纯原发灶切除并经肝动脉和门静脉置泵化疗者;C组10例,为原发灶和肝转移灶均未能切除而仅行肝动脉和门静脉置泵化疗者。用KaplanMeier法对病人的生存时间作统计分析。结果:A、B、C3组术后中位生存期分别为38、20和13个月;各组之间术后生存时间的比较均有显著统计学差异(P<0.01)。结论:结直肠癌原发灶和肝转移灶一期手术切除并经肝动脉和门静脉置泵化疗的疗效最好;肝转移灶无法切除者能将原发灶切除并经肝动脉和门静脉置泵化疗也可取得较好的疗效;原发灶和肝转移灶未能切除而仅经肝动脉和门静脉置泵化疗的疗效相对较差。对结直肠癌同时性肝转移应采取以手术切除为主的综合措施进行积极治疗。     

结直肠癌肝转移危险及预后因素分析

肝脏是结直肠癌最常见的远处转移器官,结直肠癌病人出现肝转移一般预后较差。结直肠癌肝转移分为同时性肝转移和异时性肝转移,对众多的临床以及病理学特征进行的单因素和多因素回归分析提示,影响结直肠癌发生肝转移的危险因素有：浸润深度、淋巴结转移、癌结节、分化程度、癌胚抗原和糖类抗原等。影响结直肠癌肝转移病人预后的因素有：肝转移灶大小及数目、肝外器官转移、原发灶手术切除、肝转移灶手术切除、全身药物治疗等。因此,手术切除肝转移灶、药物治疗获得手术切除机会等治疗模式能够最大程度地提高结直肠癌肝转移病人的存活率。由众多因素组合起来的评分系统,能够较好地预测结直肠癌肝转移病人的预后。     

669例结直肠癌同时陛和异时性肝转移患者不同治疗策略的预后分析

目的评价结直肠癌肝转移不同类型及治疗策略对肝转移患者生存的影响。方法回顾分析复旦大学附属中山医院2000年1月1日至2008年6月31日收治的669例结直肠癌肝转移患者的病例资料。结果本组患者同时性肝转移379例,异时性[发生肝转移中位时间（21．0±19．6）个月]肝转移290例。患者性别、年龄和肠道原发病灶的部位两组差异无统计学意义（P〉0．05）：而肝转移灶特征（累及肝叶类型、病灶个数和病灶直径）和术前CEA、CA19—9水平两组差异有统计学意义（P〈0．05）。手术切除肝转移灶253例．其中同时性肝转移123例,异时性肝转移130例。以2008年10月31日为随访终点,随访率100％。同时性肝转移和异时性肝转移的中位生存时间分别为11和23个月（P〈0．01）。5年生存率分别为6．4％和11．4％（P〈0．01）;手术病例与各种非手术治疗（介入、化疗、射频、无水酒精注射和中医中药）病例的中位生存期分别为37个月和5～26个月（P〈0．01）;5年生存率分别为35．6％和0～3．6％（P〈0．05）。结论手术治疗目前仍是结直肠癌肝转移的首选治疗措施：异时性肝转移患者生存率好于同时性肝转移。     

结直肠癌肝转移的临床病理特征与术后生存关系分析

目的通过分析结直肠癌肝转移临床病理学特征与术后生存因素的相互关系,寻找更多更准确的能够影响预后的指标对预后生存的影响,为结直肠癌肝转移患者的治疗策略提供参考。方法回顾性分析第二军医大学东方肝胆外科医院2006年1月至2009年12月期间收治并经手术治疗的233例结直肠癌肝转移患者的临床资料,采用Kaplan-Meier法计算生存率及生存曲线,并进行单因素分析,采用log-rank法进行统计学检验。将经单因素分析对预后有统计学意义的危险因素带入COX多因素回归模型,计算独立预后因素。结果本组患者术后中位生存期为37.0个月,术后1、3及5年累积生存率分别为93.0%、61.0%、17.0%。接受根治性手术患者的术后中位生存期、3及5年累积生存率优于姑息性手术者:40.53个月比27.20个月、59.0%比29.0%、20.0%比0(P0.05)。对于总体生存期而言,单因素分析结果显示,手术方式、肝转移瘤切除术后首次复发时间、肝内转移灶数目、肝内转移灶最大直径、手术切缘、肝外不可切除转移灶及周围组织或器官侵犯、是否合并慢性肝病(慢性肝炎、脂肪肝、肝硬变)、术前血清CEA水平、CA19-9水平、是否为同时性肝转移、原发灶TNM分期、肝转移瘤生长位置和肝转移瘤包膜是否完整这13项是影响预后的因素(P0.05);COX多因素分析结果显示,姑息性手术方式、同时性肝转移、肝转移瘤生长位置广泛、肝转移瘤无完整包膜、肝内转移灶多发、肝内转移灶最大直径3 cm、存在肝外不可切除转移灶及周围组织或器官侵犯和未合并慢性肝病(慢性肝炎、脂肪肝、肝硬变)这8项因素是对结直肠癌肝转移患者术后生存产生影响的独立危险因素(P0.05)。结论手术治疗可以使结直肠癌肝转移患者获得长期生存,姑息性手术方式、同时性肝转移、肝转移瘤生长位置广泛、肝转移瘤无完整包膜、肝内转移灶多发、肝内转移灶最大直径3 cm,存在肝外不可切除转移灶及周围组织或器官侵犯、未合并慢性肝病(慢性肝炎、脂肪肝、肝硬变)等是影响结直肠癌肝转移患者术后预后的独立危险因素。     

FOLFOX-6与肝动脉灌注化疗对结直肠癌肝转移治疗效果的比较

目的 比较FOLFOX-6方案全身化疗与传统以氟尿嘧啶为主的肝动脉灌注化疗对结直肠癌术后肝转移病人的疗效并分析影响结直肠癌术后肝转移病人的预后因素.方法 46名结直肠癌术后肝转移病人随机分配到全身化疗组(实验组)和介入治疗组(对照组),对比观察近远期疗效、毒副作用和生活质量.将影响预后的临床特征和治疗方式进行单因素和多因素分析.结果 实验组、对照组总生存率差异有统计学意义(P=0.048),中位生存时间分别为15.0个月和11.2个月(P＜0.05);治疗总有效率两组差异有统计学意义(50%和10%;P=0.011);两组治疗期间的PS评分差异无统计学意义(P=0.126).毒副作用除骨髓抑制、腹痛外,其它比较差异均无统计学意义.单因素分析显示,原发病灶是否浸润浆膜、肝转移灶分布、肝转移病灶最大直径、肝转移灶数目、原发癌有无淋巴结转移以及治疗方式与预后相关.多因素分析后发现,肝转移灶最大直径、肝转移病灶数目、原发癌灶是否浸透浆膜层和治疗模式为影响预后的独立因素.结论 以草酸铂为主的FOLFOX-6方案比传统的以氟尿嘧啶为主的肝动脉灌注化疗有更好的治疗缓解率和远期疗效;肝转移灶最大直径＞5 cm、肝转移灶多发和原发病灶浸透浆膜层提示病人预后不良,采取以草酸铂为主的全身化疗,预后更好.传统药物介人治疗需要改进,局部介入与全身治疗结合的方式值得进一步探究.     

结直肠癌肝转移新辅助化疗的相关问题分析

肝脏是结直肠癌最常见的转移部位,肝转移也是影响其预后的主要因素,如果不进行治疗.大部分病人自然生存期不超过12个月,接受系统化疗的病人中位生存期不足24个月,5年存活率《8%.     

中国结直肠癌肝转移诊断和综合治疗指南（2020版）

第一部分诊疗指南肝脏是结直肠癌血行转移最主要的靶器官,结直肠癌肝转移是结直肠癌治疗的重点和难点之一。15%~25%结直肠癌病人在确诊时即合并有肝转移,而另有15%~25%的病人在结直肠癌原发灶根治术后发生肝转移,其中绝大多数(80%~90%)的肝转移灶初始无法获得根治性切除。肝转移也是结直肠癌病人最主要的死亡原因,未经治疗的肝转移病人的中位生存期仅6.9个月,无法切除病人的5年生存率<5%,而肝转移灶能完全切除[或可以达到无疾病证据(no evidence of disease,NED)状态]病人的中位生存期为35个月,5年生存率可达30%~57%。     

Liver and lung resection for colorectal metastasis

Aim: To examine the survival benefit of liver and lung resection for colorectal metastasis and the potential prognostic factors that affect patient survival. Methods: All patients who had resection of lung or liver metastasis for colorectal metastasis in Queen Elizabeth Hospital, Hong Kong from 1995 to 2004 were retrospectively reviewed. The overall and disease‐free survival was analysed, in particularly between liver and lung metastasis. All factors that may have affected the survival were entered into Cox's proportional hazards regression model to identify significant variables associated with survival. Results: At 5 years, the overall survival of patients who had resection of lung and liver metastasis was 44% and 38%, respectively; the disease‐free survival was 26% and 24%, respectively. Overall and disease‐free survival of patients with resection of lung metastasis was comparable to those with resection of liver metastasis. The differentiations of primary tumour and time to metastasis were shown to be significant prognostic factors influencing overall survival. Those patients with systemic chemotherapy after resection of colorectal metastasis demonstrated a significantly higher probability of overall survival. Conclusion: Resection of lung and liver metastases from colorectal origin was safe and both procedures improved survival. The use of chemotherapy after resection of metastasis significantly improved the overall survival.     

63例大肠癌肝转移患者的回顾性临床分析

目的 回顾性分析影响大肠癌肝转移患者预后的因素,并探讨手术切除加化疗、肝动脉栓塞灌注化疗、姑息化疗治疗大肠癌肝转移的疗效.方法 回顾性分析2001年至2007年间63例大肠癌肝转移患者的临床资料,采用多因素分析方法(Cox模型)分析大肠癌肝转移患者的临床特征、治疗方法及与预后的关系,并比较不同治疗方法的疗效.结果 63例大肠癌肝转移患者中位无疾病进展时间为6个月(0～50个月),中位生存期8个月(1～33个月).单因素生存分析显示术后至发生肝转移时间少于24 个月、术前CEA水平>15ng/ml、淋巴转移数、单纯肝动脉栓塞灌注化疗和姑息化疗的患者预后不良,P<0.05;多因素生存分析发现,治疗方法和术前CEA水平是影响预后的危险因素.结论 采用手术切除加化疗治疗大肠癌肝转移患者疗效较好.     

Influence of postoperative morbidity on long-term survival following liver resection for colorectal metastases

BACKGROUND: Survival after resection of colorectal liver metastases may be influenced by the patient, the primary tumour and the liver metastases. Postoperative morbidity is associated with poor survival in several cancers. The aim of this retrospective study was to evaluate prognostic factors of survival after resection of colorectal liver metastases, including postoperative morbidity. METHODS: From 1985 to 2000, 311 consecutive patients with liver metastases from colorectal cancer underwent resection with curative intent. Univariate and multivariate analyses were performed to assess the influence of age, sex, site and stage of the colorectal tumour, disease-free interval, number, size and distribution of metastases, type of hepatectomy, pedicular clamping, resection margin, blood transfusion, postoperative morbidity and adjuvant chemotherapy on overall and disease-free survival. RESULTS: The postoperative mortality and morbidity rates were 3 and 30 per cent respectively. The 3- and 5-year overall survival rates were 53 and 36 per cent respectively. Both overall and disease-free survival rates were independently associated with nodal status of the colorectal tumour, number of metastases and postoperative morbidity. Patients with postoperative morbidity had an overall and disease-free 5-year survival rate half that of patients with no morbidity: 21 versus 42 per cent for overall survival (P < 0.001) and 12 versus 28 per cent for disease-free survival (P = 0.001) respectively. CONCLUSION: Long-term survival can be altered by postoperative morbidity after resection of colorectal liver metastases by increasing the risk of tumour recurrence. This justifies optimizing the surgical treatment of colorectal liver metastases to decrease postoperative morbidity and the use of efficient adjuvant treatments in patients with postoperative morbidity.     

Analysis of predictive factors for recurrence after hepatectomy for colorectal liver metastases

Hepatectomy for liver metastases from colorectal cancer has recently received general acceptance as a safe, potentially curative treatment. Most patients, however, die of recurrent disease after hepatectomy. The predictive factors for recurrence after first resection of liver metastases have not yet been clarified. The authors aimed to determine the factors that can predict recurrence, especially hepatic-only recurrence after hepatectomy for colorectal liver metastases. Seventy-six patients who underwent liver resection of colorectal metastases were studied retrospectively. Forty-seven (61.8%) of the patients had a recurrence. The patients' disease-free survival after first hepatectomy and the second recurrence sites were univariately and multivariately analyzed using 16 clinicopathologic variables. Wall invasion, lymph node metastases, lymphatic invasion, venous invasion of the primary tumor, 24 months or longer disease-free interval after resection of the primary colorectal cancer, and bilateral liver metastases significantly influenced the disease-free survival (log-rank test: p < 0.05). The multivariate analysis revealed that venous invasion of the primary tumor and bilateral hepatic metastases were independent risk factors for recurrence after hepatectomy. The liver was the only site of second recurrence in 23 patients. Patients with lymph node metastases and venous invasion of the primary tumor had a significant difference between hepatic-only and extrahepatic recurrence after first hepatectomy (chi-square test or Fishers' exact test: p < 0.05). Recurrence after hepatectomy was influenced more by factors associated with the primary colorectal cancer than factors surrounding the first liver metastases. Venous invasion of the primary colorectal cancer was the most important predictable factor for hepatic-only second recurrence.     

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??Liver metastases of colorectal cancer: a survival analysis ZHU De-xiang*??REN Li??WEI Ye??et al. *Institute of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
Corresponding author??XU Jian-min??E-mail??xujmin@yahoo.com.cn
Abstract Objective To investigate survival in patients with liver metastases of colorectal cancer and identify risk factors associated with survival. Methods Clinical, pathologic, treatment and complete follow-up data of the consecutive cases of colorectal liver metastasis admitted between 2000 and 2010 in Zhongshan Hospital of Fudan University were analyzed retrospectively. The prognostic value of different factors was studied through univariate and multivariate analyses. Results The median survival was 22.0 months and 5-year survival rate was 16%. Survival of synchronous liver metastases (21.2 months and 16%) was lower than that of metachronous liver metastases (30.1 months and 23%, P<0.01). Survival after resection of liver metastases was 49.8 months and 37%, which was higher than that after chemotherapy ??22.2 months and 0??, that after intervention??19.0 months and 11%??, that after chemotherapy combined with intervention??22.8 months and 10%??and that after local regional treatment (28.5 months and 0). Five factors were found to be significant and independent predictors of poor survival by multivariate analysis: simultaneous liver metastases (P=0.005), poorly differentiated primary (P=0.005), number of liver metastases ≥ 4 (P=0.008), largest liver metastases ≥ 5 cm (P=0.007), and no surgical treatment of liver metastases (P<0.001). Conclusion Survival of synchronous liver metastases is lower than that of metachronous liver metastases. Resection of liver metastases provides good long-term survival benifit for patients with resectable and initially irresectable liver metastases. Expansion of the indications for liver resection is acceptable. Long-term survival outcome can be predicted from a risk factor scoring system.     

Is a proliferation index of cancer cells a reliable prognostic factor after hepatectomy in patients with colorectal liver metastases?

BACKGROUND: In spite of many reports focusing on prognostic factors after hepatectomy in patients with colorectal liver metastases, few studies have investigated pathological factors, eg, fibrous pseudocapsulation, growth pattern at the tumor margin, and proliferation activity of cancer cells, other than histological type and surgical margin. The aim of the present study was to investigate whether absence of pseudocapsulation, infiltrative growth pattern of metastases, and higher proliferation of cancer cells shown by Ki-67 immunohistochemical reactivity were associated with poorer survival after hepatectomy among patients with colorectal liver metastases. METHODS: Between 1988 and 1998, 221 patients underwent hepatic resection of colorectal metastases with curative intent in our institution. Pathology analyses were focused on pseudocapsulation of liver metastases, growth pattern at the tumor edge, and Ki-67 labelling index (Ki-67 LI) of cancer cell nuclei. Univariate analyses of survival and of disease-free survival were performed for several clinicopathological factors, and multivariate analyses of survival and disease-free survival were also performed. RESULTS: The univariate survival analyses showed that pseudocapsulation, growth pattern, and Ki-67 LI were significant prognostic factors, besides synchronous versus metachronous occurrence of metastases, carcinoembryonic antigen level before hepatectomy, and number of metastases. A multivariate analysis showed that Ki-67 labeling index was the most reliable prognostic factor of survival. In addition, Ki-67 LI and microscopic growth pattern were multivariately predictive factors of disease-free survival. CONCLUSIONS: This large single-institution study showed that investigation of cancer cell proliferation and pathologic characteristics of the tumor margin are major prognostic factors.     

Prognostic factors in survival of colorectal cancer patients with synchronous liver metastasis

Aim To determine the factors affecting the survival in colorectal cancer patients with synchronous liver metastases. Method A total of 168 patients who had been treated colorectal cancer with synchronous liver metastases at Guangxi Medical University from January 2000 to December 2005 were identified. Criteria studied consisted of gender, age, time of symptoms, primary tumour location, primary tumour circumference, histological type, grade (tumour differentiation), T‐status, N‐status, large bowel obstruction, type of operation, primary tumour resection, ascities, location, number and diameter of liver lesions, preoperative CEA and chemotherapy. Survival curves were plotted using the Kaplan–Meier method. Multivariate analysis was conducted by Cox regression analysis. Results The mean survival time for all patients was 18.71 (SEM = 1.59) months. The 1, 2, 3 and 5‐year survival rates were 55.95%, 23.21%, 12.30%, 8.0% respectively. Univariate analysis share of grade (tumour differentiation), N‐status, large bowel obstruction, operation, primary tumour resection, location, number and the most diameter of liver lesions, extrahepatic transfer, preoperative CEA level and chemotherapy to be predictors of survival. In the Cox regression analysis, the N‐status, large bowel obstruction, operation, diameter of liver lesion and extrahepatic transfer were independent factors related to survival. Conclusion Tumour differentiation, N‐status, bowel obstruction, operation, primary tumour resection, location of liver metastasis, number of liver metastasis, diameter of liver metastasis, extrahepatic transfer, preoperative CEA level and chemotherapy are related to the survival of patients with colorectal cancer and synchronous liver metastases.     

结直肠癌伴同时性肝转移的治疗

目的 探讨结直肠癌伴同时性肝转移患者的临床相关病理因素以及手术治疗.方法 回顾性分析1994年8月至2006年12月收治患者的临床资料及随访结果,比较结直肠癌无肝转移和有同时性肝转移患者的病理特点及不同程度肝转移患者和不同手术处理的预后.结果 2019例原发性结直肠癌患者中发生同时性肝转移者166例(8.10%).多因素分析显示:术前CEA水平、Ducks分期、肿瘤分化程度与浆膜浸润是同时性肝转移发生的高危因素;同时性肝转移术后1、3、5年生存率分别为69%、21%、9%;不同程度肝转移(H1、H2、H3)组间预后差异有统计学意义(X2=23.35,P<0.01).根治性手术切除组总体生存率明显高于姑息切除和未能切除组生存率(X2=21.18,P<0.01);姑息切除组和未切除组近期生存率差异有统计学意义(P<0.01),远期生存率差异无统计学意义(P=0.13).结论 结直肠癌伴同时性肝转移患者肝转移程度不同预后也不同.能够根治性切除的结直肠癌伴同时性肝转移预后较好,姑息切除原发病灶可提高近期预后和生活质量.     

Liver resection in 157 patients with colorectal metastases

The mean life expectancy for patients with hepatic metastases from colorectal carcinoma is poor. Removal of those tumors leads to an improvement of this situation. In 157 patients with colorectal metastases liver resection was performed. The overall 5-year survival rate was 23% with a median of 34.9 months. Significant prognostic factors for survival were size, and distribution of metastases, percent hepatic replacement by tumor, and radicality of operation. These results emphasize again that in selected patients with colorectal liver metastases resectional therapy is in principle indicated. Especially in the light of lacking therapeutical alternatives this offers presently the only chance for longterm cure or at least significant palliation.     

Impact of microscopic hepatic lymph node involvement on survival after resection of colorectal liver metastasis

BACKGROUND: Macroscopic hepatic lymph node involvement is usually a contraindication to hepatic resection. Only a few studies have investigated the impact of hepatic lymph node involvement on survival. The aim of this retrospective study was to assess microscopic hepatic lymph node involvement in resectable colorectal liver metastasis and outcomes in patients with such involvement. STUDY DESIGN: From January 1985 to December 2000, 156 patients underwent curative liver resection in association with systematic hepatic lymph node dissection for colorectal liver metastasis. A first analysis was performed to assess the association between hepatic lymph node metastasis and patients' characteristics. A second analysis assessed survival after resection of liver colorectal metastasis by using the Kaplan-Meier method. RESULTS: Twenty-three of the 156 patients (15%) had microscopically involved hepatic lymph nodes. No predictive factor of lymph node metastasis was identified. Multivariate analysis showed that lymph node metastasis, preoperative carcinoembryonic antigen level, number of metastases, and morbidity were factors influencing survival. The 3- and 5-year survival rates of patients with lymph node metastasis were 27% and 5%, respectively, compared with 56% and 43% without lymph node metastasis (p = 0.0001). CONCLUSIONS: During resection of liver colorectal metastasis, microscopic lymph node involvement occurred in 15% of the patients and was associated with a poor 5-year survival. Hepatic lymph node dissection should be performed systematically to select high-risk patients.