超声引导经皮双极射频消融治疗肝癌的局部疗效观察

目的观察超声引导经皮双极射频消融治疗肝癌的局部疗效。方法选取我院2012年5月~2013年10月收治、以治愈性治疗为目的的24例肝癌患者32个病灶,对所有患者均采取超声引导下经皮双极射频消融进行治疗,术后1个月观察患者影像学(超声造影、增强CT或增强MRI)检查结果,以评价局部疗效,以后每3个月随访一次,以观察患者复发情况。结果病灶完全消融(CA)率96.9%(31/32),其中最大径3cm病灶CA率为100%(27/27),最大径≥3cm病灶CA率为80%(4/5);原发性肝癌完全CA率95.7%(22/23),转移性肝癌CA率100%(9/9)。所有患者均未出现严重并发症及与手术相关的死亡。随访2~19个月,局部复发率为6.3%(2/32)远处复发率为33.3%(8/24)。结论超声引导下经皮双极射频消融治疗肝癌安全可靠、局部疗效确切,对小肝癌尤其明显。     

Generating radiofrequency ablation lesions using magnetically coupled bipolar catheters

Background: Transmural lesions are difficult to produce in myocardial regions with thick walls, such as the left ventricle (LV), using conventional radiofrequency (RF) ablation catheters. This study was performed to evaluate the efficacy of magnetically coupled bipolar catheters and compare the performance with conventional unipolar and bipolar RF ablation catheters. Methods and Results: Neodymium magnets assembled in ablation catheters were used to facilitate tissue contact in a bipolar RF ablation system. In vitro sheets of porcine skeletal muscle, with 10‐mm thickness, were ablated with a 4‐mm‐tip unipolar RF ablation catheter (UA), a bipolar ablation system (BA) using a pair of 4‐mm‐tip catheters, and a magnetically coupled bipolar system (MB). The RF generator setting was 50 W and 90°C. RF energy was delivered for 30 or 60 seconds and five lesions were created in each ablation condition. The bottom side of the skeletal‐muscle sheet was exposed to saline at 37°C and a flow of 5.6 L/min, mimicking the LV endocardial surface. The top side was exposed to air, mimicking the epicardial surface. In the 60‐second ablation cases, the transmuralities were 0%, 0%, and 40% (UA, BA, and MB, respectively). The volumes of the lesions were 61.5 ± 8.5, 224.3 ± 51.8, and 359.3 ± 93.8 mm³ (UA, BA, and MB, respectively). Conclusions: The magnetically coupled bipolar RF ablation system created transmural lesions more efficiently than the conventional ablation system, primarily due to higher RF current density and stronger tissue contact. This prototype method could be applied to the development of novel ablation devices for thick areas of tissue. (PACE 2011; 34:934–938)     

新型腔内射频消融导管消融离体猪肝

目的 观察新型腔内射频消融导管对离体猪肝(肝实质、栓子模型)的消融效果。方法 应用EMcision Habib腔内射频消融导管及RITA射频发生器对新鲜离体猪肝肝实质及栓子模型进行消融,输出功率分别为5 W、10 W、15 W和20 W,消融时间分别为60 s、90 s和120 s,观察消融灶组织凝固形态及范围。结果 消融肝实质时,输出功率为10 W、延长消融时间(90 s延长至120 s),输出功率为15 W、延长消融时间(60 s延长至90 s)以及消融时间为60 s和90 s、增加输出功率(15 W增加至20 W)获得的消融灶长径增加(P均<0.05),而宽径增加不明显(P均>0.05)。消融栓子模型时,输出功率为10 W、延长消融时间(90 s延长至120 s),以及消融时间为60 s、增加输出功率(15 W增加至20 W)均可增加消融灶长径(P均<0.05),而宽径增加不明显(P均>0.05)。肉眼见所有消融灶附着处血管管壁颜色均与邻近血管管壁无差异。结论 采用EMcision Habib腔内射频导管消融离体猪肝可出现明确的消融范围,且对管道壁无明显损伤。     

门静脉癌栓血管内射频消融联合支架植入近中期临床观察:初步经验

目的 观察Habib~(TM) Ves Open射频消融导管对门脉癌栓进行血管内治疗联合覆膜支架植入的临床效果,探索术中门脉癌栓组织活检的安全性和可行性。方法选择自2014年6月~2015年12月肝癌门脉癌栓患者13例,应用Habib消融导管血管内射频消融联合覆膜支架植入治疗。在造影了解癌栓的部位、范围后;采用5F活检钳在透视下对癌栓抓取活检共3例;然后自鞘内送5F Habib~(TM) Ves Open射频消融导管至癌栓对癌栓行逐段消融,结束后对消融段植入覆膜支架。术后观察患者临床症状改善情况及生存状况,并实验室相关指标复查及影像学检查,观察门静脉癌栓消融治疗后的状态3~18个月。结果 所有13例患者均顺利实施了血管内射频消融联合覆膜支架植入,无严重并发症发生。3例Ⅱ型癌栓者成功活检送病理,2例增生型,1例坏死型。9例上腹胀满者术后明显缓解;4例合并腹腔积液者中2例明显缓解,2例完全消失;1例顽固性腹泻者术后第3天停止。随访3~18个月,6例Ⅱ型癌栓者病情稳定,消融通道血流通畅,1例Ⅱ型、5例Ⅲ型和1例Ⅳ型癌栓者先后出现癌栓进展,消融通道狭窄甚至闭塞。生存时间超过3个月者12例;超过6个月10例;超过12个月8例;超过18个月5例。结论Habib TM Ves Open消融导管对门脉癌栓进行血管内射频消融联合覆膜支架植入可能获得比单纯血管内消融更好的疗效。在血管鞘的保护下,用活检钳对癌栓进行抓取活检技术上是安全可行的。     

容积超声造影对肝肿瘤射频消融效果的评估

目的探讨容积超声造影评估肝肿瘤射频消融效果的价值。方法对22只新西兰白兔肝脏VX2肿瘤和22例肝癌患者进行射频消融治疗,治疗前后分别进行二维及容积超声造影,所有患者治疗前后行增强CT检查,动物肝脏均做病理学检查。结果消融前所有病灶二维及容积超声造影均表现为早期动脉相病灶内均匀或不均匀高增强;消融后,动物实验中19个病灶的疗效判断二维超声造影与病理结果相同;22个病灶容积超声造影与病理结果相同;临床研究中20个病灶的疗效判断二维超声造影与增强CT相同,24个病灶容积超声造影结果与增强CT相同。结论容积超声造影有可能更好地评估肝脏肿瘤消融治疗效果。     

部分特殊部位肝恶性肿瘤的超声引导下冷循环射频消融治疗

目的探讨特殊部位肝恶性肿瘤超声引导下经皮射频消融治疗的安全性、有效性及布针技巧。方法回顾分析2001年11月至2004年8月行超声引导下经皮冷循环射频治疗肝恶性肿瘤患者112例的资料，比较其中46例52个位于胆囊旁、包膜下、肝门部大血管旁等较特殊位置及66例86个非上述特殊部位肿瘤消融治疗的副作用及疗效。结果46例特殊部位肝肿瘤射频消融治疗均顺利进行，未发生严重的并发症，但局部肝周积液（17.4％）和胆囊壁水肿（19．6％）发生率高于非特殊部位组（P=0．0246，P=0．0009）；术后1个月复查甲胎蛋白，甲胎蛋白的变化两组比较差异无显著性意义（P〉0．05）；术后3个月CT复查完全消融41个，局部残留10个，部分消融1个，与非特殊部位组比较差异无显著性意义（P〉0．05）。结论靠近胆囊、肝包膜及肝门部等特殊部位的肿瘤并不是行冷循环射频治疗的禁忌证，只要进针点和路径选择合理，它仍然是一种有效的治疗方法。     

Hepatocellular cancer response to radiofrequency tumor ablation: contrast-enhanced ultrasound

Radiofrequency ablation (RFA) is increasingly being used as percutaneous treatment of choice for patients with early stage hepatocellular carcinoma (HCC). An accurate assessment of the RFA therapeutic response is of crucial importance, considering that a complete tumor ablation significantly increases patient survival, whereas residual unablated tumor calls for additional treatment. Imaging modalities play a pivotal role in accomplishing this task, but ultrasound (US) is not considered a reliable modality for the evaluation of the real extent of necrosis, even when color/power Doppler techniques are used. Recently, newer microbubble-based US contrast agents used in combination with grey-scale US techniques, which are very sensitive to non-linear behavior of microbubbles, have been introduced. These features have opened new prospects in liver ultrasound and may have a great impact on daily practice, including cost-effective assessment of therapeutic response of percutaneous ablative therapies. Technical evolution of CEUS focusing on findings after RFA are illustrated. These latter are detailed, cross-referenced with the literature and discussed on the basis of our personal experience. Timing of CEUS posttreatment assessment among with advantages and limitations of CEUS are also described with a perspective on further technologic refinement.     

射频消融术治疗肺部恶性肿瘤的临床观察

目的观察射频消融术（RFA）治疗肺部恶性肿瘤的临床疗效和安全性。方法对25例肺部肿瘤患者的31个肿瘤行局麻下CT引导经皮射频消融术,术后通过影像学、生存质量、并发症、疾病进展时间等方面评价RFA的治疗价值。结果31个肿瘤均顺利完成了射频消融热毁损肿瘤,其中3个肿瘤进行了2次重叠消融,3例患者失访。31个肿瘤经治疗后病灶完全毁损率达71.43％。完全毁损病灶治疗后6个月内未见复发;而部分毁损病灶治疗后1个月复发率为87.50％,3个月后复发率达到了100％,需行二次射频治疗。胸痛、发热、咳嗽咳痰是患者术后的主要并发症,且均在可耐受范围。患者治疗后各项生存质量评分均有明显变化（t分别=11.43、-4.06、-8.72、-10.89、-3.72、-8.97,P均＜0.05）。病灶完全毁损和病灶部分毁损患者的无进展生存期比较,差异有统计学意义（t=2.10,P＜0.05）。所有患者的1年生存率为60.00％,2年生存率为40.00％。结论射频消融治疗肺部恶性肿瘤近期疗效确切、安全,不良反应能耐受,可明显提高肺癌患者的生存质量。     

Preliminary experimental study on splenic hemodynamics of radiofrequency ablation for the spleen

Purpose: To test the splenic blood flow change after radiofrequency ablation (RFA) of the spleen in a porcine experimental model.

Material and methods: Six pigs underwent RFA of the spleen via laparotomy. During the procedure of RFA, clamping of splenic artery (one) and both splenic artery/vein (one) was also performed. Measurement of blood flow of both splenic artery (SA) and splenic vein (SV) with flow-wire at pre- and post-RFA of the spleen was also performed.

Results: Ablated splenic lesions were created as estimating ～50% area of the spleen in all pigs. Resected specimens reveal not only the coagulated necrosis but also the congestion of the spleen. On the SA hemodynamics, maximum peak velocity (MPV) changed from 37?±?7?to 24?±?8?cm/s (normal), 11?to 10?cm/s (clamp of the SA), and 12?to 7.5?cm/s (clamp of both SA/SV), respectively. On the SV hemodynamic, MPV changed from 15?±?5?to 13?±?4?cm/s (normal), 17?to 15?cm/s (clamp of the SA), and 17?to 26?cm/s (clamp of both SA/SV), respectively.

Conclusions: RFA of the spleen could induce coagulation necrosis and reduce the splenic arterial blood flow.     

Tissue temperatures and lesion size during irrigated tip catheter radiofrequency ablation: an in vitro comparison of temperature-controlled irrigated tip ablation, power-controlled irrigated tip ablation, and standard temperature-controlled ablation

The limited success rate of radiofrequency catheter ablation in patients with ventricular tachycardias related to structural heart disease may be increased by enlarging the lesion size. Irrigated tip catheter ablation is a new method for enlarging the size of the lesion. It was introduced in the power-controlled mode with high power and high infusion rate, and is associated with an increased risk of crater formation, which is related to high tissue temperatures. The present study explored the tissue temperatures during temperature-controlled irrigated tip ablation, comparing it with standard temperature-controlled ablation and power-controlled irrigated tip ablation. In vitro strips of porcine left ventricular myocardium were ablated. Temperature-controlled irrigated tip ablation at target temperatures 60 degrees C, 70 degrees C, and 80 degrees C with infusion of 1 mL saline/min were compared with standard temperature-controlled ablation at 70 degrees C and power-controlled irrigated tip ablation at 40 W, and infusion of 20 mL/min. Lesion size and tissue temperatures were significantly higher during all modes of irrigated tip ablation compared with standard temperature-controlled ablation (P < 0.05). Lesion volume correlated positively with tissue temperature (r = 0.87). The maximum recorded tissue temperature was always 1 mm from the ablation electrode and was 67 +/- 4 degrees C for standard ablation and 93 +/- 6 degrees C, 99 +/- 6 degrees C, and 115 +/- 13 degrees C for temperature-controlled irrigated tip ablation at 60 degrees C, 70 degrees C, and 80 degrees C, respectively, and 112 +/- 12 degrees C for power-controlled irrigated tip ablation, which for irrigated tip ablation was significantly higher than tip temperature (P < 0.0001). Crater formation only occurred at tissue temperatures > 100 degrees C. We conclude that irrigated tip catheter ablation increases lesion size and tissue temperatures compared with standard ablation in the temperature-controlled mode at the same or higher target temperatures and in the power-controlled mode. Furthermore, tissue temperature and delivered power are the best indicators of lesion volume during temperature-controlled ablation.     

MRI-guided radiofrequency ablation of liver tumours: A valuable and minimally-invasive therapeutic option

Summary

This study was performed to evaluate the safety, feasibility and potential efficacy of MR-guidance for percutaneous radiofrequency (RF) ablation of hepatic malignancies. Seven patients with 12 hepatic malignant tumours (1.3–3.0 cm in diameter) were treated with RF-ablation, using cooled-tip, 16-gauge electrodes with 2–3 cm tip exposure. The electrodes were placed under MR-guidance using fast breath-hold T₁ weighted sequences on a 0.2-T MR-interventional imager. Patients were treated under local anaesthesia, general analgesia and sedation. Technical success and therapeutic assessment were evaluated on the basis of results with MR-imaging. MR-guidance was successful in all 17 sessions, with a mean procedure time of 2.0 h (1.5–2.5 h). No complications were observed and no technical problems encountered. Technical success, based on MR results, was achieved in 11 of the 12 tumours (91.6%). The follow-up MR-examinations confirmed complete necrosis of the entire tumour area in 81.8% over a period of 2–13 months. In conclusion, MR-guided RF-ablation of hepatic malignancies appears to be a safe, feasible and potentially effective method for the treatment of small hepatic malignancies.     

经皮穿刺射频消融治疗肝癌的临床观察与护理

目的：通过对经皮肝穿刺射频消融治疗肝癌并发症的分析,探讨护理对策。方法：回顾性研究分析2002年5月-2007年5月210例原发性肝癌患者在B超引导下经皮肝穿刺射频肿瘤热凝术疗效及术后并发症产生原因。结果：术后出现皮肤烧伤3例,结肠穿孔合并肝功能衰竭1例,空腔脏器损伤1例,气胸2例,胸腔积液4例,肝脓肿2例。结论：虽然经皮肝穿刺射频肿瘤热凝术是一种微创手术,但术后仍应密切观察生命体征和腹部体征的变化,及时防治经皮肝穿刺射频肿瘤热凝术引发的并发症。     

Reduction of atrial fibrillation inducibility by radiofrequency ablation: an experimental study

A study is made of the antifibrillatory effects of radiofrequency (RF)-induced atrial lesions using nine Langendorff-perfused rabbit hearts in which the atrial electrophysiological properties and atrial fibrillation (AF) inducibility were modified by atrial stretching. Using a multiple electrode consisting of 121 unipolar electrodes, determinations were made of the atrial refractory periods, conduction velocity, wavelength of the atrial activation process, and the inducibility of sustained AF episodes (duration over 30 s) by atrial burst pacing in four situations: (a) control; (b) following dilatation of the right atrium; (c) after adding an RF linear lesion at the cava-tricuspid annulus isthmus; and (d) after adding two RF linear lesions rounding the base of the right atrial appendage and extending from the inferior zone of the sulcus terminalis to the anterior wall of the appendage. Under control conditions, AF was not induced in any of the experiments. The wavelengths were 10.5 +/- 1.2 cm for basic cycles of 250 ms and 6.6 +/- 0.5 cm for cycles of 100 ms. Following dilatation, a significant decrease was recorded in the atrial refractory periods, conduction velocity, and wavelength, which reached values of 6.1 +/- 0.7 cm (250-ms cycle, P < 0.01), and 3.9 +/- 0.3 cm (100-ms cycle, P < 0.01); AF was induced in five cases (P < 0.05). After producing the lesion at the cava-tricuspid isthmus, the electrophysiological modifications induced by atrial dilatation persisted (wavelength = 6.2 +/- 0.6 cm (250-ms cycle) and 4.3 +/- 0.3 cm (100-ms cycle); P < 0.01 vs the control) and AF was triggered in eight cases (P < 0.0001). In turn, on adding the two lesions at the right atrial free wall and appendage, AF was induced only in one experiment (P = NS vs control), and the dilatation-induced decrease in refractoriness and wavelength was attenuated. Nevertheless, differences remained significant with respect to the controls, with the exception of the functional refractory periods determined at cycles of 100 ms. In this phase, the wavelength was 6.6 +/- 0.7 cm (250-ms cycle, P < 0.01 vs control) and 4.9 +/- 0.5 cm (100-ms cycle; P < 0.05). Atrial conduction between the zones separated by the lesions was blocked at any frequency, or selectively at rapid atrial activation frequencies. In conclusion: (a) the production of three linear lesions in the right atrium (cava-tricuspid isthmus, atrial appendage, and inferior free wall) reduces AF inducibility in the experimental model used; (b) conduction block (either absolute or frequency dependent) through the lesions, reduction in tissue mass caused by lesion creation, and possibly the attenuation of the shortening of atrial refractoriness and wavelength in the zones not separated by the lesions are implicated in the reduction of AF inducibility; and (c) the single lesion in the cava-tricuspid isthmus does not impede AF inducibility.     

The loop electrode: A new device for US-guided interstitial tissue ablation using radiofrequency electrosurgery - an animal study

Summary

In an animal study, we have tested a special loop electrode for ultrasound-guided percutaneous interstitial tissue ablation using monopolar radiofrequency (RF) electrosurgery. The loop electrode with a radius of 1 cm was inserted into calf livers via an insulated introducer cannula. Monopolar RF current in the cut mode was applied to the loop electrode which was rotated a full turn. During this, a lesion was cut off interstitially. In three sedated calves a total of seven liver lesions were made percutaneously or during laparotomy. The procedure was guided and monitored by ultrasono-graphy including colour Doppler imaging. Autopsy was performed on day 0 or day 8 post treatment and included gross sectional examination and microscopic evaluation (light microscopy and electron microscopy). In the first animal, the lesions were incomplete because of insufficient voltage setting. In the second and third animal, however, four spherical lesions with a diameter of 2 cm were cut off without clinical complications. A minor haematoma surrounded the four lesions. The cut off lesion was non-vital on electron microscopy. The presented tissue ablation technique is shown to be feasible and efficient in a live organism. More animal studies are warranted to evaluate the safety aspects with this technique.     

射频消融对荷瘤大鼠树突状细胞分化成熟影响因素的探讨

目的 探讨射频消融(RFA)治疗大鼠肝肿瘤前后血清TGF-β1、外周血IL-10的变化及其意义.方法 采用瘤块包埋法制作SD大鼠Walker-256肝肿瘤模型30只,随机分为RFA 1周组、RFA 2周组和对照组,每组10只,前两组分别在RFA后1周、RFA后2周处死动物,对照组不做RFA即处死动物并取外周血,采用Ficoll密度梯度离心法分离外周血单个核细胞,应用ELISA法检测血清TGF-β1,应用FCM检测其IL-10水平.结果 ①对照组大鼠血清TGF-β1水平(6.61±0.12)μg/L.RFA后1周为(5.63±0.46)μg/L,RFA后2周为(5.53±0.56)μg/L,RFA后1周组及RFA后2周组与对照组比较差异均有统计学意义(P＜0.05).②对照组大鼠外周血IL-10表达水平95.92±2.31,RFA后1周为89.71±5.44,RFA后2周为87.67±11.11,RFA后1周组与对照组比较差异有统计学意义(P＜0.05).结论 RFA通过对肿瘤组织的原位灭活在一定程度上解除肿瘤组织所释放的TGF-β1、IL-10对荷瘤宿主的免疫抑制状态,促进荷瘤宿主体内树突状细胞的分化成熟,提高机体抗原提呈能力.     

Atrioventricular nodal reentry tachycardia: slow pathway ablation using the transseptal approach

Four hundred twenty consecutive patients with symptomatic slow/fast atrioventricular nodal reentry tachycardia had attempted slow pathway radiofrequency ablation. All patients had successful slow pathway ablation and no inducible tachycardia after ablation using the standard right-sided approach except for three patients. The three unsuccessful patients had inducible slow/fast atrioventricular nodal tachycardia after attempted right-sided posterior and inferoposterior anatomic ablative techniques and with slow pathway potential electrogram guidance. Lesions were also delivered linearly in the triangle of Koch and within the coronary sinus ostium. A transseptal puncture was performed and slow pathway ablation was obtained in each of these patients. Ablation was performed from the septal mitral valve annulus, anterior to the os of the coronary sinus and inferior to the His-bundle catheter with elimination of slow pathway conduction. Prior to the ablation, two of the three patients exhibited initiation of tachycardia with a double fast/slow antegrade response, and all three patients had long AH intervals (mean 378 ms) during slow pathway conduction. These electrophysiological findings may be consistent with a large area of slow pathway conduction that may include the left atrial septum not approachable by conventional right-sided ablative techniques. Slow pathway ablation to eliminate atrioventricular nodal reentry tachycardia at times may require a left atrial/transseptal approach when conventional right-sided techniques are ineffective.     

肝叶切除联合术中超声引导射频消融治疗多发性肝癌的价值

目的探讨外科手术联合术中超声引导射频消融治疗肝癌的价值。方法21例原发性肝癌患者术前均行肝脏三期CT和MRI检查,共56个病灶。对21个直径〉3cm的肝内病灶行外科手术切除,35个直径〈3cm的肝内病灶使用术中超声引导下射频消融治疗;以影像学检查结果判断病灶是否消融。结果射频消融肿瘤的平均时间较外科手术切除肿瘤的时间短。术后1个月肝脏三期CT／MRI复查显示35个病灶完全消融。在射频消融术中除治疗初期消融的5个病灶出现针眼出血外,余未见邻近组织损伤、胆漏等严重并发症,未出现治疗相关的死亡。结论外科手术联合术中超声引导射频消融治疗多发性肝癌是一种方便、合理、可行的治疗方案。     

肝细胞癌射频消融后局部肿瘤进展多因素分析

目的 探讨射频消融( radiofrequency ablation,RFA)治疗肝细胞癌(hepatocellular carcinoma,HCC)后局部肿瘤进展的危险因素,为进一步优化治疗提供依据.方法 回顾性分析246例患者343个肿瘤病灶行RFA规范化治疗的临床及随访资料,统计分析影响RFA局部疗效的相关因素.结果 肝细胞癌RFA治疗后局部肿瘤进展发生率为11.4％(39/343病灶),局部肿瘤进展发生的平均时间为12.0个月(3～28个月).单因素分析显示肿瘤大小、边界是否清晰、是否邻近血管、RFA前是否行超声造影(contrast-enhanced ultrasound,CEUS)与射频后局部肿瘤进展相关;COX多因素分析获得的独立影响因素是:肿瘤大小(P＜0.001)、是否邻近血管(P ＜0.001)和RFA前是否CEUS(P=0.018).结论 肿瘤大小、是否邻近血管和RFA前是否CEUS是局部肿瘤进展的独立影响因素,此结果有助于采取相应措施和策略,提高RFA疗效.     

实时超声造影在肝癌射频消融治疗前的应用研究

目的　探讨肝癌射频消融（RFA）前实时超声造影对确定消融范围和选择治疗方案的应用价值。方法　对RFA前239例肝癌患者315个病灶进行常规超声和低机械指数（MI〈0．2）实时超声造影检查（造影剂为Sono　Vue）,比较分析肝癌常规超声与超声造影的图像差异及其对确定消融范围和选择治疗方案的影响。结果　192个病灶（60．9％）超声造影后肿瘤大小测值较造影前明显增大（P〈0．01）,其中163个病灶设计消融范围较超声造影前明显扩大,29例因肿瘤≥6cm而改为手术切除;125个病灶（39．7％）超声造影后肿瘤形态更加不规则（P〈0．01）,其中16例因显示形态不规则的肿瘤邻近重要结构而改为手术切除。结论　与常规超声比较,RFA前超声造影可以更清晰、更准确地显示肝癌的大小、形态和浸润范围,为确定消融范围和选择治疗方案提供可靠的依据。     

Anterior wall resection plus radiofrequency ablation versus simple aspiration in the treatment of auricular pseudocyst: a retrospective study

ObjectiveTo compare the efficacy of two different treatment approaches for auricular pseudocyst.MethodsThis retrospective study reviewed data from patients with auricular pseudocyst that were treated with either anterior wall resection plus radiofrequency ablation compression (surgical group) or simple aspiration and compression suturing (control group). The following outcomes were compared between the two groups: therapeutic response (cure, good or none), duration of postoperative medication (antibiotics) use, duration of postoperative pain, duration of recovery of appearance and rate of complications (infection, auricular thickening, incision swelling and recurrence).ResultsA total of 386 patients were enrolled in the study: 218 in the surgical group and 168 in the control group. Duration of postoperative medication use, duration of postoperative pain, duration of recovery of appearance and rate of postoperative complications were significantly lower in the surgical group compared with the control group. The overall therapeutic response (cure and good response) was significantly greater in the surgical group than in the control group.ConclusionAuricular pseudocyst can be effectively treated by both of these methods, but anterior wall resection plus radiofrequency ablation compression might be more effective.