肝癌局部消融治疗规范的专家共识

局部消融治疗是借助影像技术的引导对肿瘤靶向定位,用物理或化学的方法杀死肿瘤组织;影像引导技术包括超声、CT和MRI;治疗途径有经皮、经腹腔镜手术和经开腹手术三种。局部消融治疗的特点一是直接作用于肿瘤,具有高效快速的优势;二是治疗范围局限于肿瘤及其周围组织,对机体影响小,     

肝癌局部消融治疗规范的专家共识

局部消融治疗是在影像技术的引导对肿瘤靶向定位,用物理或化学的方法杀死肿瘤组织;影像引导技术包括超声、CT和MRI;治疗途径有经皮、经腹腔镜手术和经开腹手术三种。局部消融治疗的特点：一是直接作用于肿瘤,具有高效快速的优势;二是治疗范围局限于肿瘤及其周围组织,对机体影响小,可以反复应用。     

肝癌局部消融治疗规范的专家共识

局部消融治疗是在影像技术的引导下对肿瘤靶向定位,用物理或化学的方法杀死肿瘤细胞;影像引导技术包括超声、CT和MRI;治疗途径有经皮、经腹腔镜手术和经开腹手术三种.局部消融治疗的特点:一是直接作用于肿瘤,具有高效快速的优势;二是治疗范围局限于肿瘤及其周围组织,对机体影响小,可以反复应用.局部消融治疗在过去20年左右发展迅速,已经成为继手术切除、介入治疗后的第三大肝癌治疗手段,而且由于其疗效确切,特别是在小肝癌的治疗方面,射频消融治疗的疗效与手术切除相近,因此,被认为是小肝癌的根治性治疗手段之一.     

肝癌经皮消融治疗

肝癌(包括原发性和转移性)在获得明确诊断时，多数已不适于手术切除。近年来，一些试图代替手术的经皮消融疗法应运而生(表1)。这些方法的共同特点是：微创；对小的肿瘤可根治，与手术切除相媲美；对大的或多发性肿瘤，可减少瘤负荷，为进一步综合治疗创造条件，达到改善生活质量和延长生存期的效果。     

较大肝癌局部消融的关键问题

近年来,超声、CT、MRI 引导下射频消融（RFA）和微波消融（MCT）作为微创热消融技术迅速发展,已证实热消融治疗肝癌安全、廉价、有效,且极具前景。对于小肝癌（〈3 cm）的疗效确切[1],目前被临床列为一线治疗方法[2]。对大于3 cm 的肝癌进行消融,虽有较高的坏死率[3],但由于受消融热场区限制,存在完全灭活困难,局部复发率高的问题[4]。鉴于在临床实际工作中,小肝癌比例较少,而3 cm 以上较大肝癌最常见,因此提高较大肝癌局部消融的疗效成为改善肝癌患者预后的关键。如何能做到穿刺次数少,又完全灭活肿瘤、减少消融治疗后肝癌的局部复发已成为重要的研究热点。     

肝癌的局部治疗

原发性肝癌(简称肝癌，HCC)的治疗已发展为包括以手术切除为主，辅以介入疗法、化疗、免疫疗法、局部物理疗法和中医疗法等的综合治疗。     

综合靶向消融治疗中晚期肝癌的临床研究

目的 探讨用氩氦刀冷冻 微波消融 化学消融等综合靶向消融治疗中晚期肝癌的疗效.方法 78例中晚期肝癌患者采用综合靶向消融治疗,先行肝动脉栓塞化疗,一周后行局部氩氦刀冷冻术、微波消融或化学消融术;56例单纯行动脉栓塞化疗.结果 治疗组1年生存率56.4%,对照组1年生存率36.9%;治疗组AFP平均值低于对照组,有显著性差异.结论 综合靶向消融治疗能提高中晚期肝癌患者的生存率,较单纯介入疗法治疗更为有效.     

Intrahepatic dissemination of hepatocellular carcinoma after local ablation therapy

Background/Purpose

We aimed to clarify the histological features of and risk factors for intrahepatic dissemination after local ablation therapy (LAT) for hepatocellular carcinoma (HCC).

Methods

Between April 1992 and December 2005, 192 HCC patients underwent hepatic resection at our department, among whom were 17 patients who had local recurrences after LAT. Eight of these 17 patients had intrahepatic dissemination. The clinical and histological characteristics of these 8 surgically treated patients with intrahepatic dissemination were investigated.

Results

Histologically, numerous intrahepatic metastases were observed, mainly in the same section as the treated tumor, together with main or sectional portal vein tumor thrombi. Before the ablation therapy, the average tumor diameter was 2.1 cm, and 62.5% of the tumors were adjacent to the main or sectional portal vein. In terms of therapeutic factors, 25% of the patients had a prior needle biopsy and 62.5% had insufficient safety margins.

Conclusions

LAT for HCCs (even those less than 3 cm in diameter) adjacent less than 5 mm to the main or sectional portal vein possibly promotes intrahepatic dissemination.     

肝癌局部消融治疗的现状和进展

肝癌局部消融治疗取得了令人满意的临床疗效,成为肝癌综合治疗中的一种重要手段.目前,主要有温度消融和化学消融两种.温度消融包括微波消融、射频消融、激光消融、高强度聚焦超声(high intensity focus ultrasound,HIFU)和冰冻消融等;化学消融包括酒精消融和醋酸消融等.本文将从各种消融治疗的原理、适应证、疗效、并发症、禁忌证及各种方法优缺点等多个方面来评述局部消融治疗的现状和进展.     

Radiofrequency ablation therapy for hepatocellular carcinoma in elderly patients

Background and Aim: With the aging of society, the number of elderly patients with hepatocellular carcinoma (HCC) has been increasing in Japan. The Government of Japan defines elderly as being over 65 and has divided the elderly into two stages: the first elderly stage (< 75 years old) and the second elderly stage (≥ 75). We investigated the efficacy and safety of radiofrequency ablation therapy (RFA) in patients in the second elderly stage in comparison with other HCC patients, retrospectively. Methods: Two hundred six patients with HCC, who were within the Milan criteria, with low‐grade performance status (0 or 1) and a Child‐Pugh classification of A or B were enrolled. All were treated with RFA from January 2000 to December 2008 as an initial therapy and were divided into elderly HCC group (e‐HCC group; ≥ 75, n = 63) and non e‐HCC group (< 75, n = 143), and their clinical data and survival rates were compared. Results: Age and the level of protein induced by vitamin K absence or antagonist (PIVKA‐II) were higher in the e‐HCC group as compared with the non e‐HCC group (78.3 ± 3.2 vs 64.2 ± 7.5 years, 676.3 ± 2643.7 vs 142.4 ± 442.2 mAU/mL: P < 0.01, respectively). There were no significant differences for Child‐Pugh class, tumor node metastasis stage, and Japan Integrated Stage score and in survival rates after 3, and 5 years between the groups (e‐HCC group: 82.5% and 49.7%, respectively; non e‐HCC group: 78.3% and 57.5%, respectively). There were no severe complications in the e‐HCC group. Conclusions: Elderly HCC patients, who have good performance status, should be treated in the same manner and with the same strategy as young HCC patients.     

Tumor markers after radiofrequency ablation therapy for hepatocellular carcinoma

BACKGROUND/AIMS: The aim of this study was to evaluate the clinical value of measurement of the AFP-L3 fraction before and after radiofrequency ablation (RFA) therapy for HCC, compared with the measurement of total AFP and des-gamma-carboxy prothrombin (DCP). METHODOLOGY: One hundred and twenty-four patients with HCCs were evaluated for their complete response with a 5-mm-thick safety margin around the tumor. Three tumor markers (AFP, DCP, AFP-L3) were measured after RFA therapy, and their clinical significance was studied. RESULTS: Multivariate analysis revealed that of the three tumor makers only AFP-L3 showed significant differences in the survival and disease-free rates. CONCLUSIONS: AFP-L3 is the most reliable tumor marker for estimating overall survival and disease-free survival in patients with HCC effectively treated by RFA in contrast to AFP and DCP.