Prognostic factors in survival of colorectal cancer patients after surgery

Objective  To determine the factors affecting survival, following resection of large bowel for colorectal carcinoma.
Method  From the cancer database of a single referral institution, a total of 1090 patients who had undergone colorectal resection between 1999 and 2002 were identified. Cases with recurrent colorectal cancer or previous history of neoadjuvant chemotherapy were excluded. Survival curves were plotted using the Kaplan–Meier method. Univariate analysis of factors thought to influence survival was then made using Logrank test. Criteria studied consisted of age, sex, TNM stage, T-status, nodal status, distant metastasis, histological grade, lymphatic and vascular invasion, tumour location, preoperative carcinoembryonic antigen (CEA) level and liver function tests. Multivariate analysis was conducted using Cox regression analysis.
Results  The mean survival time for all patients was 42.8 (SEM = 2.8) months. The overall 1-, 3- and 5-year survival rates were 72%, 54% and 47%, respectively. In univariate analysis, patients' age ( P  < 0.0001), TNM stage ( P  < 0.0001), T-status ( P  = 0.015), nodal status ( P  = 0.016), distant metastasis ( P  < 0.0001), grade ( P  = 0.005), lymphatic and vascular invasion ( P  < 0.0001) and presurgery CEA level > 5 ng/ml ( P  = 0.021) were found to be predictors that could affect survival. In Cox regression analysis, age ( P  < 0.0001), TNM stage ( P  = 0.001) and grade ( P  = 0.008) were determined as independent prognostic factors of survival.
Conclusion  Age, TNM stage, T-status, nodal status, distant metastasis, grade, lymphatic and vascular invasion and presurgery CEA level can predict the postsurgical survival rate in patients with colorectal cancer.     

The prognostic significance of resection of primary tumor in gastric and colorectal cancer patients with synchronous liver metastasis

The significance of primary tumor resection in gastric and colorectal cancer patients with liver metastasis (H(+)) was evaluated in terms of operative mortality and survival rate by dividing the materials [293 gastric cancer and 80 colorectal cancer patients (53 colon and 27 rectum) with synchronous liver metastasis] into the following groups: Firstly, with or without peritoneal dissemination (P), secondly, with or without resection of the primary tumor and thirdly, with or without postoperative adjuvant chemotherapy. The following results were obtained: (1) The direct operative death rate of primary tumor resection, excluding death from other causes, showed an absence of statistically significant differences between the P₀H(+) and P(+)H(+) gastric and colorectal cancer patients. (2) There was no significance in the prognosis between the primary tumor resection + postoperative chemotherapy group and the non-resectable group in the P(+)H(+) gastric and colorectal cancer patients, revealing no prognostic value of the primary tumor. (3) In the P₀H(+) gastric and colorectal cancer patients, the primary tumor resection + postoperative chemotherapy group was significantly more favorable in prognosis than was the primary tumor resection alone group or the non-resectable group, showing the value of primary tumor resection.     

结肠癌伴肝转移同期切除影响预后相关因素分析

目的 探讨结肠癌伴肝转移行同期切除影响病人预后的相关因素。方法 回顾性分析2002年1月至2008年6月第二军医大学附属东方肝胆外科医院综合治疗三科结肠癌伴肝转移行同期切除59例的临床资料。结果 年龄、性别、CEA水平、门静脉化疗泵内局部化疗及肝转移灶大小、数目和位置对病人生存时间具有影响。结论 肝肿瘤的大小、位置、数目、CEA水平虽对预后有影响,但均为不可控因素,而术中及术后门静脉化疗泵内局部化疗为可控因素。术中及术后门静脉化疗泵内局部化疗并配合全身化疗者预后明显好于未给予者（P=0.0076）。     

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目的探讨影响结直肠癌肝转移手术治疗的预后因素。方法回顾性分析中国医学科学院肿瘤医院腹部外科2000年1月至2011年1月资料完整并行手术治疗的123例结直肠癌肝转移病人的临床资料。结果全组病人1,3,5年存活率分别为87.2%,35.6%及21.1%。单因素分析显示肿瘤大小、术前癌胚抗原(CEA)水平、是否R0切除是影响预后的因素(P<0.05)。COX多因素分析显示是否R0切除是影响预后的独立危险因素。结论手术切除是结直肠癌肝转移病人获得长期生存的最佳手段,综合治疗是病人达到R0切除、改善远期疗效的关键。     

大肠癌同时性肝转移外科治疗的预后因素分析

目的探讨大肠癌同时性肝转移及其与预后有关的危险因素,提高大肠癌肝转移的诊治水平。方法回顾性分析1994年8月至2004年2月间收治的大肠癌同时性肝转移106例的临床资料,对15项临床病理指标进行统计分析,并用单因素分析和Logistic回归分析与同期收治的无复发性肝转移的大肠癌1052例进行比较。同时对大肠癌肝转移行根治性切除、姑息性切除和探查性手术的生存状况用KaplanMeier法和COX回归方法进行分析比较。结果单因素分析显示,肠梗阻、腹水、盆腔结节、腹膜侵犯、浆膜浸润、周围脏器受累以及肿瘤长径、浸润肠壁的周径、浸润深度都与大肠癌同时性肝转移显著相关;Logistic回归分析发现,浸润深度、浆膜浸润、盆腔转移结节和腹水是影响大肠癌同时性肝转移最重要的因素。根治性切除57例(53.8%),姑息性切除39例(36.8%)和探查性手术后10例(9.4%)平均生存期和中位生存期分别为41.0和34.0个月、23.6和18.0个月以及16.5和12.0个月,三组差异有统计学意义(P=0.0095)。手术方式、肿瘤部位和盆腔结节是影响大肠癌同时性肝转移预后的主要因素。结论大肠癌浸润达浆膜、有盆腔转移结节和腹水者可能合并肝转移,根治性切除可以明显提高大肠癌同时性肝转移的生存率。     

What factors influence survival in patients with unresected synchronous liver metastases after resection of colorectal cancer?

OBJECTIVE: The aim of this study was to determine whether the survival of patients with untreated synchronous liver metastases after resection of a colorectal cancer was associated with any features of the primary tumour. METHODS: Information for 398 consecutive patients with unresected liver metastases in the period 1971-2001 was examined by multivariate survival analysis. RESULTS: Of 19 clinical and pathological variables considered, survival was independently associated only with residual tumour in a line of resection (hazard ratio (HR) 1.95), venous invasion (HR 1.87), right colonic tumour (HR 1.68), lymph node metastasis (HR 1.54), and extra-hepatic metastasis (HR 1.16); 8.3% of patients had none of these adverse features. Their 2-year overall survival rate was 39.2%, compared with only 16.5% (P < 0.001) in those with one or more adverse features. CONCLUSIONS: These findings may assist in selecting patients most likely to benefit from treatment of hepatic metastases and in counselling patients and their relatives.     

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。     

Liver transplantation versus liver resection for colorectal liver metastasis: a survival benefit analysis in patients stratified according to tumor burden score

Liver transplantation (LT) for colorectal liver metastasis (CRLM) may provide excellent survival rates in patients with unresectable disease. High tumor load is a risk factor for recurrence and low overall survival (OS) after liver resection (LR). We tested the hypothesis that LT could offer better survival than LR in patients with high tumor load. LR performed at Padua University Hospital for CRLM was compared with LT for unresectable CRLM performed both at Oslo and Padua. High tumor load was defined as tumor burden score (TBS) ≥ 9, and inclusion criteria were as in the SECA-I transplant study. 184 patients were eligible: 128 LRs and 56 LTs. 5-year OS after LR and LT was 40.5% and 54.7% (P = 0.102). In the high TBS cohort, 5-year OS after LR and LT was 22.7% and 52.2% (P = 0.055). In patients with Oslo score ≤ 2 and TBS ≥ 9 (13 LR; 24 LT) the 5-year OS after LR and LT was 14.6% and 69.1% (P = 0.002). The corresponding disease-free survival (DFS) was 0% and 22.9% (P = 0.005). Selected CRLM patients with low Oslo score and high TBS could benefit from LT with survival outcomes that are far better than what is achieved by LR.     

结直肠癌肝转移的分子机制研究进展

目的对近年来国内外就结直肠癌肝转移的分子机制研究进展的文献进行总结,旨在为结直肠癌肝转移的诊治及研究提供帮助。方法复习近年来国内外针对结直肠癌肝转移的文献并进行综述。结果影响结直肠癌肝转移的分子机制复杂,如microRNA-192可通过多个靶点抑制结直肠癌肝转移,microRNA-181a则可以促进结直肠癌肝转移。转化生长因子β(Transforming growth factor beta,TGF-β)通过抑制细胞增殖和Smad依赖性信号传导诱导细胞凋亡,起到抑制肿瘤生长的作用。CEA水平的升高不仅对结直肠癌的诊断提供帮助,作为结直肠癌患者的预后指标,CEA还影响结直肠癌细胞在血管中的存活、改变肝脏微环境以及循环肿瘤细胞在肝脏中的黏附和存活,促进肝转移。结论结直肠癌肝转移的分子机制尚未完全阐明,通过对结直肠癌肝转移机制的深入研究,可为结直肠癌肝转移提供分子靶向治疗靶点,如贝伐单抗、西妥昔单抗、帕尼单抗等。检测结直肠癌患者血清学CEA的变化,可以有助于结直肠癌的诊断、判断复发和预后以及转移情况。     

胃癌同时性肝转移手术患者的预后分析

目的分析经手术治疗的胃癌同时性肝转移患者的预后因素。方法回顾性分析1998年1月至2012年12月间在大连医科大学附属第一医院胃肠外科手术治疗的胃癌同时性肝转移53例患者的临床病理学资料,对单发和多发肝转移患者的生存率进行比较并进行预后分析。结果本组53例患者5年总体生存率为11．3％。单发肝脏转移患者34例,5年生存率14．7％,明显高于19例多发肝转移患者的0（P=-0．000）。单因素分析结果显示,浆膜侵犯（P=0．000）、淋巴结转移（P=0．000）、手术根治度（P=0．044）、发生肝转移数目（P=0．000）和肝转移肿瘤直径（P=0．031）是影响胃癌肝转移患者预后的因素。其中浆膜侵犯（RR：3。355,P=0．012）和肝转移数目（RR：7．664,P=0．000）是影响胃癌肝转移患者预后的独立因素。结论手术治疗可以提高无浆膜侵犯的胃癌单发肝转移患者的预后。     

新辅助化疗对结直肠癌肝转移老年患者的效果及安全性

目的 探讨新辅助化疗对结直肠癌肝转移老年患者的有效性和安全性。方法 对2016年2月至2019年5月就诊于安徽省庐江县中医院（46例）和河南省人民医院（34例）的80例结直肠癌同时性肝转移老年患者的临床资料进行回顾性分析。对照组（n=40）行腹腔镜原发灶切除+肝转移灶同期/分期切除手术+术后XELOX方案化疗,观察组（n=40）在对照组基础上术前行XELOX方案新辅助化疗,术后随访12个月。结果 观察组新辅助化疗后原发灶的临床分期较化疗前明显好转（χ²=5.12,P=0.021）,肝转移灶直径缩小[（6.4±3.8）cm vs （4.2±3.0）cm,t=2.74,P=0.008]。两组手术时间、排气时间比较,差异无统计学意义（P>0.05）,观察组术中出血量少于对照组[（725.4±61.8）mL vs （842.6±167.1）mL,t=3.33,P=0.001],术后不良反应发生率高于对照组[47.50%（19/40） vs 12.50%（5/40）,χ²=11.67,P<0.001];术后6个月KPS评分高于对照组[（67.38±12.39）vs （51.03±10.55）,t=6.35,P<0.001];术后12个月肿瘤复发率低于对照组[15.38%（6/39） vs 37.50%（15/40）,χ²=4.9,P=0.026],两组术后12个月病死率无统计学差异[7.69%（3/39） vs12.5%（5/40）,P>0.05]。结论 新辅助化疗可提高结直肠癌肝转移老年患者客观缓解率,降低近期肿瘤复发率,改善患者术后功能状态,但会增加患者术后不良反应,能否在临床推广仍需进一步大样本研究。     

Long-term survival after surgical resection of liver metastasis from lung cancer

Lung cancer metastasis to the liver indicates a poor prognosis, and the majority of patients with metastatic disease to the liver are not indicated for surgery because of the number or distribution of metastases or the presence of extrahepatic disease. We herein describe a case of long-term survival after a surgical resection of liver metastases from lung cancer. Six months after surgery for Stage IB primary lung adenocarcinoma, a 71-year-old male was found to have a metastatic tumor in his liver. A hepatic resection for the metastatic tumor and another small metastatic foci found intraoperatively was carried out, and the tumors were pathologically diagnosed as liver metastases from lung cancer. The patient is presently alive and well without recurrence, as of 5 years and 2 months after the liver resection. This is the first report of the successful surgical treatment of liver metastasis from lung cancer.     

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.     

大肠癌肝转移综合治疗的研究进展

大肠癌是发病率和病死率均较高的恶性肿瘤,肝转移是大肠癌最常见的转移方式,大肠癌肝转移的防治直接关系到患者的预后.国内外关于大肠癌肝转移治疗的研究很多,肝转移灶切除术是有手术指征患者的主要治疗之一,其他包括化疗、姑息治疗以及免疫基因治疗是手术治疗的有力补充.本文对大肠癌肝转移综合治疗的适应证、禁忌证、治疗方法、效果等方面的研究进展进行了综述.     

结直肠癌同时性肝转移的手术疗效分析

目的探讨结直肠癌同时性肝转移的外科治疗临床价值和疗效。方法自2003年5月至2008年10月,对32例结直肠癌同时性肝转移患者行同期切除术为治疗组,同期内未行手术切除的肝转移瘤27例患者为对照组。两组术后以XELox方案化疗。结果治疗组1、3和5年累积生存率为92．5％、53．1％、34．6％。对照组1、3和5年生存率为66．7％、18．5％、0。两组总生存率比较有统计学意义（P〈0．05）。两组临床资料相比较无统计学意义（P〉0．05）。治疗组中有6例患者术后发生胸腔积液,1例膈下积液,3例胆漏,无手术死亡病例。结论结直肠癌肝转移的的根治性切除是患者获得长期生存的有效治疗手段;直肠癌同时性肝转移行同期切除术可提高患者的幸存时闻和幸存后量．改善其预后．     

Optimizing the approach to patients with potentially resectable liver metastases from colorectal cancer

Liver metastases are a common event in colorectal carcinoma. Significant advances have been made in managing these patients in the last decade, including improvements in staging and surgical techniques, an increasing armamentarium of chemotherapeutics and multiple local ablative techniques. While combination chemotherapy significantly improves median patient survival, surgical resection provides the only prospect of cure and is the focus of this review. Interpretation of published work in this field is challenging, particularly as there is no consensus to what is resectable disease. Of particular interest recently has been the use of neoadjuvant treatment for downstaging and downsizing disease in patients with initially unresectable liver metastases, in the hope of response leading to potentially curative surgery. This review summarizes the recent developments and consensus guidelines in the areas of staging, chemotherapy, local ablative techniques, radiation therapy and surgery, emphasizing the multidisciplinary approach to this disease and ongoing controversies in this field and examines the changing paradigms in the management of colorectal hepatic metastases.