MRI及B超对乳腺癌新辅助化疗疗效评价的前瞻性研究

目的 观察B超及MRI在乳腺癌新辅助化疗疗效评价中的作用.方法 对2007年7月至2008年7月接受新辅助化疗的85例原发性乳腺癌患者进行前瞻性研究,对比分析手术前新辅助化疗前、化疗2周期后、化疗4周期后患者的B超、MRI影像学资料,参照实体瘤疗效评价标准(RECIST)评价疗效,并与术后组织病理学检查进行比较.结果 人组患者共85例,均完成4周期新辅助化疗.MRI评估完全缓解(CR)者0例,部分缓解(PR)者56例,疾病稳定(SD)者27例,疾病进展(PD)者2例;B超评估CR者0例,PR者52例,sD者31例,PD者2例.MRI及B超对新辅助化疗后残余肿瘤检测的阳性预测值均为94.1%.其中新辅助化疗后残余肿瘤最大径线MRI测茸结果与病理镜下测量结果高度相关(r=0.783,P<0.05),B超对残余肿瘤测量结果与病理镜下测量结果中度相关(r=0.576,P<0.001).结论 MRI是乳腺癌新辅助化疗临床疗效评价的可靠方法,其准确性高于B超.     

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??Objective:o observe tumor volume,volume reduction rate with postoperative histopathologic tumor downstaging,lymph node status in rectal cancer after preoperative chemoradiotherapy (CRT) and to investigate the usefulness of MRI volumetry for predicting response to neoadjuvant chemoradiotherapy. Methods:orty??two patients with locally advanced rectal cancer admitted between December 2004 and October 2006 were performed preoperative CRT,followed by surgical resection.DWI volumetry was performed before and after CRT.Pre?? and post CRT tumor volume and percent of volume reduction,according to postoperative T??downstaging, histopathologic lymph node staging in accordance with the AJCC TNM classification were compared. Results:ighteen patients demonstrated a tumor downstaging after chemoradiation therapy.Both pre?? and post??treatment MRI tumor volumes were significantly smaller in downstaged patients than in not downstaged patients (P??0.01??,but the percentage of volume reduction rates was not significantly higher in downstaged patients (P??0.05).According to N staging,the patients were divided into N0 group and N1-2 group.There was not significant difference in mean tumor volume before preoperative CRT between N0 group and N1-2 group (P??0.05). Conclusion:The higher tumor volume reduction rate does not correlate with histopathologic downstaging,and initially smaller tumors are more likely to be downstaging tumor. So it might be unsafe to evaluate tumor response and to select the surgical method on the basis.The tumor volume before chemoradiotherapy does not correlate with histopathologic lymph node status,but the tumor volume after chemoradiotherapy and tumor volume reduction rate in patients with node??matastasis are significantly different with those in patients without node??matastasis.So the higher DWI volumetric tumor reduction rate is more inclined to have negative nodes in rectal cancer with preoperative chemoradiotherapy.     

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目的研究蒽环类联合紫杉类方案对三阴型乳腺癌进行新辅助化疗的疗效,应用动态增强磁共振成像(MRI)及组织病理学进行疗效评价。方法选择2008年1月至2011年12月北京大学第一医院乳腺疾病中心初始实施蒽环类联合紫杉类新辅助化疗并完成手术的三阴型乳腺癌病人为研究对象。疗效评价包括动态增强MRI临床评价及组织病理学评价。定义MRI评价包括临床完全缓解、临床部分缓解为临床评价有效,计算临床有效率;定义病理分级G3~G5为病理评价有效,计算病理有效率。结果共诊治1190例新发乳腺癌,其中三阴型乳腺癌129例(占10.8%),41例符合入组标准,新辅助治疗临床评价有效率为65.85%(27/41),病理评价有效率为85.37%(35/41),其中病理完全缓解率(pCR)为36.59%(15/41),新辅助治疗MRI评价与病理评价符合率为77.1%。结论蒽环类联合紫衫类方案是治疗三阴型乳腺癌的有效方法。动态增强MRI能准确评价三阴型乳腺癌新辅助化疗疗效,并与病理评价相符合。     

Neoadjuvant chemotherapy in stage III breast cancer

Neoadjuvant chemotherapy in advanced breast cancer can potentially downstage disease prior to definitive surgery. In this study, a doxorubicin-based neoadjuvant regimen was administered to stage III breast cancer patients to assess 1) primary tumor response, 2) tumor involvement of resection margins, and 3) predictive value in cancer outcome. Eighty-two patients with stage IIIA and IIIB breast cancer diagnosed between 1990 and 2003 were studied. All patients received similar chemotherapy regimens, consisting of doxorubicin, cisplatin, and 5-fluorouracil, plus surgery and radiation therapy. End points measured include primary tumor response [complete response (CR) = 100%, partial response (PR) > 50%, or no response (NR) < or = 50%], resection margins for tumor, disease-free, and overall survival. Kaplan-Meier and log-rank tests were performed. Of the 82 patients studied, 34 received neoadjuvant therapy, 48 received conventional postoperative treatment. Seventy-two per cent of the stage IIIB and 22 per cent of the stage IIIA patients received neoadjuvant therapy. In the neoadjuvant group, 29 (85%) patients demonstrated tumor response, 9 (26%) of which were CR. Tumor-free resection margins were achieved in 94 per cent of the neoadjuvant group. Survival analysis demonstrated no benefit comparing neoadjuvant versus postoperative adjuvant therapy but hints at improved disease-free survival in neoadjuvant CR patients (log-rank test, P = 0.07). Eighty-five per cent of patients with stage III breast cancer treated with neoadjuvant chemotherapy experienced clinical response, with 26 per cent CR, and 97 per cent tumor-free resection margins. CR may portend a better cancer outcome.     

新辅助化疗对乳腺癌组织中ER、Survivin及C-erB-2表达的影响

目的：探讨乳腺癌新辅助化疗的临床效果及其对ER、Survivin和C-erB-2表达的影响。方法：62例可手术乳腺癌采用TE方案新辅助化疗观察客观有效率及新辅助化疗前后ER、Survivin和C-erB-2的表达。结果：新辅助化疗后临床完全缓解（CR）9例,部分缓解（PR）38例,病情稳定（SD）14例,疾病进展（PD）1例。新辅助化疗后Survivin表达明显下降（P〈0.05）,ER及C-erB-2阳性表达率均低于新辅助化疗前但差异无统计学意义（P〉0.05）。Survivin化疗后表达降低者化疗有效率高,Survivin表达升高者化疗有效率低,二者之间有相关性,ER、C-erB-2表达变化与化疗有效率之间无相关性。结论：乳腺癌新辅助化疗可以有效的缩小肿瘤;Survivin在新辅助化疗后表达显著降低,而ER、及C-erB-2的阳性表达降低,但无显著影响。     

新辅助化疗联合乳腔镜保乳手术64例临床分析

目的探讨新辅助化疗联合乳腔镜保乳手术近期疗效及美容效果.方法64例乳腺癌接受CEFi方案化疗2～4周期后行乳腔镜保乳术.结果CEFi方案新辅助化疗CR 5例,PR 52例,SD 5例客观有效率92.0%(57/62),病理学完全缓解率6.5%(4/62),保乳手术后对乳腺形态满意率98.4%(63/64).随访2～30个月,平均18个月,未发现局部复发.结论早期乳腺癌新辅助化疗,肿物降低分期,便于保乳治疗.乳腔镜保乳并发症少,乳腺形态变化小,美观效果好.     

The Role and Limitations of 18-Fluoro-2-deoxy-<Emphasis Type="SmallCaps">d</Emphasis>-glucose Positron Emission Tomography (FDG-PET) Scan and Computerized Tomography (CT) in Restaging Patients with Hepatic Colorectal Metastases Following Neoadjuvant Chemotherapy: Comparison with Operative and Pathological Findings

Background Recent data confirmed the importance of 18-fluoro-2-deoxy-d-glucose positron emission tomography (FDG-PET) in the selection of patients with colorectal hepatic metastases for surgery. Neoadjuvant chemotherapy before hepatic resection in selected cases may improve outcome. The influence of chemotherapy on the sensitivity of FDG-PET and CT in detecting liver metastases is not known. Methods Patients were assigned to either neoadjuvant treatment or immediate hepatic resection according to resectability, risk of recurrence, extrahepatic disease, and patient preference. Two-thirds of them underwent FDG-PET/CT before chemotherapy; all underwent preoperative contrast-enhanced CT and FDG-PET/CT. Those without extensive extrahepatic disease underwent open exploration and resection of all the metastases according to original imaging findings. Operative and pathological findings were compared to imaging results. Results Twenty-seven patients (33 lesions) underwent immediate hepatic resection (group 1), and 48 patients (122 lesions) received preoperative neoadjuvant chemotherapy (group 2). Sensitivity of FDG-PET and CT in detecting colorectal (CR) metastases was significantly higher in group 1 than in group 2 (FDG-PET: 93.3 vs 49%, P < 0.0001; CT: 87.5 vs 65.3, P = 0.038). CT had a higher sensitivity than FDG-PET in detecting CR metastases following neoadjuvant therapy (65.3 vs 49%, P < 0.0001). Sensitivity of FDG-PET, but not of CT, was lower in group 2 patients whose chemotherapy included bevacizumab compared to patients who did not receive bevacizumab (39 vs 59%, P = 0.068). Conclusions FDG-PET/CT sensitivity is lowered by neoadjuvant chemotherapy. CT is more sensitive than FDG-PET in detecting CR metastases following neoadjuvant therapy. Surgical decision-making requires information from multiple imaging modalities and pretreatment findings. Baseline FDG-PET and CT before neoadjuvant therapy are mandatory. The abstract was presented before the 58th Cancer Symposium of the Society of Surgical Oncology, Atlanta, GA, USA, 2005, and before the 2005 Congress of the American Hepato-Pancreato-Biliary Association, Fort-Lauderdale, FL, USA.     

The impact of primary tumor volume on local control for oropharyngeal squamous cell carcinoma treated with radiotherapy

BACKGROUND: A study was needed to determine the effect of primary tumor volume on local control of oropharyngeal carcinoma treated with radiation therapy, with or without induction chemotherapy. METHODS: Between July 1983 and April 1995, 114 patients with T2-T4 squamous cell carcinoma of the oropharynx were treated for cure with radiation therapy, with or without induction chemotherapy, and had a pretreatment CT scan available for retrospective review. All scans were reviewed by a single radiologist (A. A. M.) to determine the tumor volume of the primary lesion. Volume was measured with a computer digitizer for each CT slice showing the primary lesion. RESULTS: A large variation in tumor volume within a given T stage was found. Multivariate analysis demonstrated T stage to be the most significant factor affecting local control. Tumor volume marginally influenced local control (p =.10). CONCLUSIONS: Primary tumor volume varies significantly within a given T stage and has a marginal impact on the likelihood of local control after radiotherapy.     

Diffusion-weighted imaging in evaluating the response to neoadjuvant breast cancer treatment

The aim of this study was to investigate the role of diffusion imaging in the evaluation of response to neoadjuvant breast cancer treatment by correlating apparent diffusion coefficient (ADC) value changes with pathological response. From June 2007 to June 2009, all consecutive patients with histopathologically confirmed breast cancer undergoing neoadjuvant chemotherapy were enrolled. All patients underwent magnetic resonance imaging (MRI) (including diffusion sequence) before and after neoadjuvant treatment. The ADC values obtained using two different methods of region of interest (ROI) placement before and after treatment were compared with MRI response (assessed using RECIST 1.1 criteria) and pathological response (assessed using Mandard's classification). Fifty-one women (mean age 48.41 years) were included in this study. Morphological MRI (RECIST classification) well evaluated the responder status after chemotherapy (TRG class; area-under-the-curve 0.865). Mean pretreatment ADC values obtained with the two different methods of ROI placement were 1.11 and 1.02 × 10(-3) mm(2) /seconds. Mean post-treatment ADC values were 1.40 and 1.35 × 10(-3) mm(2) /seconds, respectively. A significant inverse correlation between mean ADC increase and Mandard's classifications was observed for both the methods of ADC measurements. Diagnostic performance analysis revealed that the single ROI method has a superior diagnostic accuracy compared with the multiple ROIs method (accuracy: 82% versus 74%). The coupling of the diffusion imaging with the established morphological MRI provides superior evaluation of response to neoadjuvant chemotherapy treatment in breast cancer patients compared with morphological MRI alone. There is a potential in the future to optimize patient therapy on the basis of ADC value changes. Additional works are needed to determine whether these preliminary observed changes in tumor diffusion are a universal response to tumor cell death, and to more fully delineate the ability of ADC value changes in early recognizing responder from nonresponder patients.     

Salvage chemotherapy for refractory and relapsed posttransplant lymphoproliferative disorders (PTLD) after treatment with single-agent rituximab

BACKGROUND: Single-agent rituximab has demonstrated encouraging efficacy and tolerability in posttransplant lymphoproliferative disorders (PTLDs) failing to respond to immunosuppression reduction (IR). This retrospective analysis was undertaken to determine the efficacy and safety of salvage therapy in recipients of solid organ transplants with progression of PTLD after rituximab first-line therapy. METHODS: Eleven patients who had received IR and single-agent rituximab were analyzed. Of these, 10 had received CHOP salvage chemotherapy. One patient with limited disease received tumor irradiation and further IR. Most patients (73%) had late PTLD (median onset of disease 145 months posttransplant), and most (83%) had monomorphic histology; 36% had EBV-association. RESULTS: IR and irradiation therapy re-induced complete remission (CR) and allowed long-term disease control in a patient with polymorphic PTLD relapse. CHOP therapy achieved CR in five (50%) and partial remission (PR) in two (20%) patients. Four of five (80%) patients achieving CR remained in CR at a median follow-up of 44.2 months. Of the patients achieving PR, one is currently alive, and the second died from transplant rejection after converting to CR after consolidative chemotherapy. Patients with stable disease (two) and progressive disease (one) have died from PTLD. There was one possible CHOP-associated death (acute cardiac event) and two patients had to be switched to less-toxic monotherapies. Median overall survival was 46.5 months (95% confidence interval: 23.6-49.1 months). CONCLUSIONS: CHOP salvage therapy achieved a favorable overall response rate of 70% in this setting, indicating that PTLD generally remains chemotherapy-sensitive after progression following first-line rituximab.     

Primary chemotherapy in the treatment of breast cancer]

Between 1980 and 1992, 457 consecutive patients with initial breast cancer entered two successive protocols combining neoadjuvant chemotherapy, hormonotherapy (tamoxifen) and locoregional radiotherapy (teleradiotherapy and boost by iridium) as exclusive locoregional treatment. Cytological diagnosis, hormone receptors, cytological grading were provided by fine needle aspiration. Both protocols included velbe, thiotepa, methotrexate, 5FU and adriamycin with some minor differences regarding the schedule of doses and their number during induction and during the consolidation phase. In both studies, over 50% patients had locally advanced breast cancer (IIb, IIIa or IIIb). Chemotherapy induced tumor regression over 50% in 91% patients of the first protocol (30% complete clinical remission CR) and in 94% patients of the 2nd protocol (40% CR): in this protocol 20 poor responders were given a rescue protocol (2 CR; 9 partial remissions). The 5 year actuarial rate of breast preservation is 94% and the 5 year actuarial rate of local relapses is 15%. The cosmetic results according to Danoff are excellent 20%, good 55%, mean 35%. Disease free survival and overall survival compare favorably to published data: they depend on TNM stages, tumor differentiation and chemotherapy induced early tumor regression.     

fMRI(磁共振功能成像)对乳腺癌新辅助化疗评估的研究进展

【摘要】〓能够早期评估乳腺癌新辅助化疗疗效的方法很大程度上有助于病人治疗方案的制定,所以对于找寻精准且无创的方法的需求则日益上升。目前,MRI技术能够根据肿瘤大小、形态及强化程度等形态学变化对疗效进行评估,而且已有越来越多新兴技术能够从微观分子层面早期反映新辅助化疗后肿瘤变化,这些技术包括动态对比增强(DCE-MRI)、磁共振波谱(MRS)、磁共振弥散加权成像(DWI)、体素内不相干运动(IVIM)。作者综述MRI新技术在评估乳腺癌新辅助化疗疗效中的应用。     

胃癌新辅助化疗疗效临床评价方法及进展

目的研究胃癌新辅助化疗疗效临床评价方法及进展。方法对有关胃癌新辅助化疗疗效临床评价方法的文献进行综述分析,比较CT、EUS、MRI及PET的评价结果与术后病理、预后结果的符合度。结果CT、EUS是目前临床中常用的疗效评价方法,但是其评价指标和标准不统一,胃癌套用现有的实体瘤疗效评价标准似乎并不适用;采用磁共振扩散加权成像(DWI)评价胃癌新辅助化疗疗效还有待进一步研究;PET在早期准确筛选出化疗无效病例方面具有优势。结论胃癌新辅助化疗疗效临床评价尚缺乏统一标准,各种影像学方法的综合应用可能有利于提高评价的准确性。     

MRI and FDG-PET for Assessment of Response to Neoadjuvant Chemotherapy in Locally Advanced Rectal Cancer

Background

The purpose of this study was to assess the value of magnetic resonance imaging (MRI) and additional ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) for tumor response to neoadjuvant chemotherapy (NAC) in patients with locally advanced rectal cancer (LARC).

Methods

Data on 40 patients with LARC, who were treated with NAC and underwent MRI and FDG-PET/CT before and after NAC, were analyzed retrospectively. Surgery was performed at a median of 6 weeks after NAC and the images were compared with the histological findings. The tumor regression grade 3/4 was classified as a responder.

Results

Sixteen patients were pathological responders. Receiver operating characteristic (ROC) analysis revealed that MRI total volume after NAC (MRI-TV2) and ΔMRI-TV had the highest performance to assess responders (area under the ROC curve [AUC] 0.849 and AUC 0.853, respectively). The reduction rate of the maximum standardized uptake value (ΔSUVmax) was also an informative factor (AUC 0.719). There seems no added value of adding FDG-PET/CT to MRI-TV2 and ΔMRI-TV in assessment of NAC responders judging from changes in AUC (AUC of ΔSUVmax and MRI-TV2 was 0.844, and AUC of ΔSUVmax and ΔMRI-TV was 0.846).

Conclusions

MRI-TV2 and ΔMRI-TV were the most accurate factors to assess pathological response to NAC. Although ΔSUVmax by itself was also informative, the addition of FDG-PET/CT to MRI did not improve performance. Patients with LARC who were treated by induction chemotherapy should receive an MRI examination before and after NAC to assess treatment response. A more than 70 % volume reduction shown by MRI volumetry may justify the omission of subsequent radiotherapy.     

含洛铂方案的新辅助化疗在骨肉瘤及尤因肉瘤中的疗效观察

背景：化疗是骨肉瘤及尤因肉瘤最主要的治疗手段之一,目前化疗疗效已进入平台期,选择低毒高效的化疗药物及方案是关键。目的：观察含洛铂（LBP）方案的新辅助化疗对骨肉瘤及尤因肉瘤的疗效及不良反应。方法：2011年10月至2012年10月收治经病理学检查确诊为原发恶性骨肿瘤患者22例,其中骨肉瘤13例,尤因肉瘤9例;男17例,女5例,年龄9～23岁,平均18.3岁;Enneking分期：ⅡA期3例,ⅡB期19例。给予LBP-多柔比星（AMD）方案交替异环磷酰胺（IFO）方案（LBP 30mg/m2,AMD 60mg/m2;IFO12g/m2;全身静脉给药）的新辅助化疗,后行保肢手术治疗。采用RECIST评价标准评价其疗效,并观察不良反应。结果：22例中完全缓解（CR）1例,部分缓解（PR）18例,疾病稳定（SD）3例,总有效率（RR）为86.4%。随访3～14个月,平均9.2个月,1例脊柱骨肉瘤患者术后5个月复发,其余患者未发现复发或转移征象。主要不良反应为限制性骨髓抑制,化疗间歇期患者恢复快,无明显肾功能异常及过敏反应。结论：骨肉瘤及尤因肉瘤接受含LBP方案的新辅助化疗的近期疗效满意,不良反应可耐受,值得进一步临床研究。     

乳腺癌组织Ki67表达与蒽环类联合紫杉类新辅助化疗效果的相关性

目的 探讨乳腺癌原发病灶肿瘤组织Ki67表达与葸环类联合紫杉类新辅助化疗疗效之间的相关性.方法 2008年1月至2009年6月共129例乳腺癌患者接受蒽环类联合紫杉类新辅助化疗,采用免疫组化方法前瞻性检测乳腺原发病灶粗针病理切片Ki67的表达水平,采用实体肿瘤疗效评价标准(RECIST 2000)及Miller-Payne病理学分级标准分别对新辅助化疗疗效进行MRI及病理学评价,并在此基础上进行临床疗效综合评价;探讨Ki67不同表达水平与疗效之间的相关性.结果 129例患者行新辅助化疗后经MRI评价87例(67.4%)有效,经组织病理学评价99例(76.7%)有效,经临床疗效综合评价110例有效(85.5%).Ki67表达≤10%组上述三种疗效评价方法的有效率分别为50.0%、62.5%及71.9%;Ki67表达>10%组则分别为73.2%、81.4%及89.7%;两组比较差异均有统计学意义(P值分别为0.020、0.030、0.010).经统计检验,Ki67的表达水平与临床综合疗效呈线性相关.结论 Ki67高表达的乳腺癌患者行蒽环类联合紫杉类新辅助化疗效果更好.     

DOX新辅助化疗方案对进展期食管胃交界部癌和远端胃癌的效果评价

目的探讨DOX方案新辅助化疗在进展期食管胃交界部癌（adenocarcinomaofesopha—gogastricjunction,AEG）及远端胃癌（distalgastriccancer,DGC）治疗中的作用。方法收集2008年10月至2011年3月间确诊的进展期胃癌患者58例,其中食管胃交界部腺癌18例（AEG组）,远端胃癌40例（DGC组）,术前行DOX方案化疗2周期,于化疗后14—21d行手术治疗。结果两组患者均完成术前新辅助化疗,化疗后AEG组CR3例,PR12例,SD3例,PD0例,总有效率为83．3％;DGC组CR2例,PR20例,SD17例,PD1例,总有效率55．0％,两组差异有统计学意义（P〈0．05）。AEG及GC的R0切除率分别为88．8％及87．5％,差异无统计学意义（P〉0．05）。两组化疗主要不良反应为粒细胞减少、胃肠道不良反应及外周神经毒性;术后并发症发生率差异无统计学意义（均P〉0．05）。两组1年生存率均为100％;AEG组2年生存率（77．8％）比DGC组（75．0％）亦无统计学差异（均P〉0．05）。结论DOX方案新辅助化疗对食管胃交界部癌较远端胃癌效果更好,缩小肿瘤、降低分期更明显,但远期疗效尚待进一步随访。     

三氧化二砷联合化疗治疗Ⅲ期成骨肉瘤、尤文肉瘤的初步报告

目的 探讨三氧化二砷（Arsenic trioxide,As2O3）联合化疗治疗转移性成骨肉瘤、尤文肉瘤的可行性。方法自2002年12月至2005年6月,32例转移性成骨肉瘤、尤文肉瘤患者接受了以三氧化二砷为主的二线化疗方案。其中男性19例,女性13例,年龄7～32岁。成骨肉瘤27例,尤文肉瘤5例;肿瘤转移部位包括肺转移25例,多发骨转移7例。所有病例均为手术后患者,术前及术后共接受过4～6周期的规范化疗。化疗方案：三氧化二砷、VP-16、紫杉醇。化疗2个周期28例,3个周期4例。结果所有患者均获得随访,随访时间6～36个月,平均20个月。经三氧化二砷联合化疗2个疗程后,5例完全缓解（15．6％）,转移病灶消失,无新发病灶出现;6例部分缓解（18．8％）;13例稳定（40．6％）,转移病灶无明显缩小,但出现明显钙化,其中完全钙化2例,部分钙化11例;8例进展（25％）,肿瘤体积增大或转移数目增多。21例治疗前碱性磷酸酶或乳酸脱氢酶增高的病例,9例（42．9％）明显下降。32例患者中病情持续稳定,肿瘤得到控制者24例,病情加重5例,死亡3例。结论三氧化二砷是一种低毒、有效的化疗药物,对于Ⅲ期成骨肉瘤、尤文肉瘤患者有较好的近期临床疗效。     

结直肠癌同时性肝转移新辅助化疗后手术对比直接手术患者的生存疗效

目的:对比结直肠癌同时性肝转移行新辅助化疗后手术与直接手术患者的生存疗效。方法:本研究采用回顾性队列研究方法,纳入在2008年1月至2018年12月期间,北京大学肿瘤医院肝胆胰外一科收治的282例初始评估为技术上可切除的结直肠同时性肝转移患者。以肝转移术前是否接受过新辅助化疗,分为新辅助化疗组（244例）和直接手术组（...     

ER、PR、HER2和Ki-67在乳腺癌新辅助化疗前后表达变化的临床意义

【摘要】 目的 探讨新辅助化疗前后ER、PR、HER2、Ki-67表达的改变与乳腺癌新辅助化疗疗效的关系。方法 收集广东省妇幼保健院乳腺外科2007年1月1日至2012年12月31日收治的72例接受新辅助化疗的ⅡA~ⅢC期的乳腺癌资料,回顾性分析临床特征、ER、PR、HER2及Ki-67表达水平与新辅助化疗疗效的关系。结果 72例乳腺癌患者新辅助化疗总有效率(RR)为76.4%(55/72),其中有16.7%(12/72) 病例达临床完全缓解(CR),59.7%(43/72)病例达临床部分缓解(PR)。23.6%(17/72)的病例为病情稳定(SD),无患者获得疾病进展(PD),病理完全缓解(pCR)7例(9.72%)。原发肿瘤大小、ER、PR、Ki-67表达与新辅助化疗的临床有效率相关(P<0.05);病理完全缓解率(pCR)与ER、PR状态相关(P<0.05);ER新辅助前后发生改变的约22.2%,PR发生改变的约25.0%,HER2发生改变的约15.3%,Ki-67发生改变的约55.6%;新辅助化疗疗效与ER、PR、Ki-67化疗前后的改变相关(P<0.05),与HER2的改变无关(P>0.05)。结论 乳腺癌新辅助化疗后ER、PR、HER2和Ki-67的表达可发生改变,并且ER、PR和Ki-67表达的改变可预测新辅助化疗的疗效。