乳腺癌新辅助化疗后前哨淋巴结活检的研究进展

在早期可手术乳腺癌病人中,前哨淋巴结活检术(sentinel lymph node biopsy,SLNB)早已替代了传统的腋窝淋巴结清扫术(axillary lymph node dissection,ALND),使腋窝淋巴结(axilla-ry lymph node,ALN)阴性的病人减少了因腋清所导致的术后上肢肿...     

前哨淋巴结活检在新辅助化疗乳腺癌患者中的临床研究进展

前哨淋巴结活检作为早期乳腺癌患者腋窝淋巴结分期的手段已被肿瘤学界普遍接受,而且对前哨淋巴结阴性患者可以避免腋窝淋巴结清扫术带来的不良后果。随着前哨淋巴结活检技术的发展,其适应证不断扩大,但该方法在新辅助化疗乳腺癌患者中的应用目前尚有争议。本文对新辅助化疗乳腺癌患者前哨淋巴结活检的可行生及时机选择进行综述。     

乳腺癌新辅助化疗后行前哨淋巴结活检47例分析

新辅助化疗后前哨淋巴结活检(SLNB)是否仍有价值是当前乳腺外科领域存在争议的问题。本文总结分析我院原发性乳腺癌行新辅助化疗后SLNB情况,旨在探讨其应用价值及可行性。     

乳腺癌新辅助化疗后蓝染法行前哨淋巴结活检术的临床分析

【摘要】 目的 研究乳腺癌患者新辅助化疗后蓝染法行前哨淋巴结活检术(SLNB)的可行性。方法〓回顾性分析2012年1月至2015年6月初诊于广西柳州市工人医院普外四病区的IIA-IIIB期乳腺癌患者69例。所有患者均接受新辅助化疗,疗程4~8个周期,分析新辅助化疗后蓝染法行SLNB的检出率、假阴性率。结果〓入组患者SLNB检出率为85.5%,假阴性率为18.2%;SLNB的检出率因腋窝淋巴结状态不同而存在统计学差异,在不同肿瘤的大小、肿瘤位置、患者年龄和SLNB时注射染料位置无统计学差异,假阴性率在上述不同分组中均无统计学差异。结论〓NAC后蓝染法SLNB可应用于治疗前腋窝淋巴结阴性的乳腺癌患者;对于治疗前腋窝淋巴结阳性的患者则存在风险。增加SLN检出数目可增加NAC后行SLNB的可靠性。     

乳腺癌新辅助化疗后前哨淋巴结活检的初步研究

目的研究乳腺癌新辅助化疗后前哨淋巴结活检（SLNB）的可行性和效果。方法利用新型示踪剂——^99mTc-利妥昔配合专利蓝染料对60例原发性乳腺癌新辅助化疗后病例进行SLNB，并对SLN进行常规病理检查和免疫组织化学检查。SLNB后常规腋窝淋巴结清扫。结果SLN检测成功率95％（57／60）。SLN转移阳性23例（40％），其中18例为常规病理检查转移阳性（78％），5例为免疫组织化学检出的微转移（22％）。23例SLN有转移病例中，9例同时存在其他腋窝淋巴结转移，另外14例为惟一转移淋巴结。1例SLN转移假阴性。灵敏度96％（23／24），准确性98％（56／57），特异度100％（33／33），假阴性率4．3％（1／23），阴性预测值97％（36／37），阳性预测值100％（24／24）。内乳淋巴结显像11例，活检病理检查均为转移阴性。结论同位素示踪剂和蓝染料联合检测方法对原发性乳腺癌新辅助化疗后进行SLNB同样适用，内乳前哨淋巴结活检不应做常规推荐。     

乳腺癌新辅助治疗前哨淋巴结处理原则

前哨淋巴结活检及新辅助治疗已成为乳腺癌综合治疗的重要措施,也是个体化治疗的重要体现.乳腺癌新辅助治疗具有较高的腋窝淋巴结控制率,如何在乳腺癌新辅助治疗病人中精准、高效实施前哨淋巴结活检引起越来越多的关注.新辅助治疗前后腋窝淋巴结状态的精准评估是实施前哨淋巴结活检的基础.对于新辅助治疗前腋窝淋巴结阴性的病人,推荐新辅助治...     

乳腺癌新辅助化疗后腋窝淋巴结的变化

目的评价新辅助化疗对乳腺癌腋窝淋巴结的影响。方法45例Ⅱ、Ⅲ期乳腺癌接受新辅助化疗后手术(新辅助化疗联合手术组),根据体检、B超及钼靶像计数腋窝淋巴结总数和阳性、阴性淋巴结数,与未行新辅助化疗直接手术治疗的79例乳腺癌(直接手术组)比较,观察腋窝淋巴结的变化。结果新辅助化疗联合手术组检出腋窝总淋巴结和阳性淋巴结为(16.9±5.9)枚和(2.5±2.2)枚,显著低于直接手术组的(20.8±8.0)枚和(3.9±3.0)枚(t=-2.856,P=0.005;t=2.790,P=0.006),2组阴性淋巴结分别为(14.4±5.4)枚和(16.7±7.0)枚,无统计学差异(t=-1.904,P=0.055)。新辅助化疗联合手术组40例随访6~19个月,平均10个月;直接手术组67例随访7~21个月,平均12个月,2组各有4例复发。结论乳腺癌经新辅助化疗后行腋窝淋巴结清扫所检出的淋巴结总数和阳性淋巴结数减少。     

乳腺癌前哨淋巴结活检

18 94年 ,美国医生Halsted首创了乳腺癌根治术 ,使术后复发率由当时的 5 8%～ 85 %下降到 6% ,开创了肿瘤器官整块广泛切除和区域淋巴结清扫的经典肿瘤外科治疗原则。 2 0世纪 70年代 ,美国学者Fisher提出乳腺癌是一种全身性疾病 ,区域淋巴结并非癌细胞滤过的有效屏障 ,血流扩散更具重要意义的理论后 ,乳腺癌手术逐步向保乳手术迅速发展。近年来 ,不少学者对乳腺癌常规行腋淋巴结清扫 (axillarylymphnodedissection ,ALND)这一金标准的必要性提出质疑 ,引发了乳腺癌外科治疗的又一次革命[1] 。近期不断有资料显示 ,较小范围的腋淋巴结切…     

前哨淋巴结活检对乳腺癌新辅助化疗后腋窝状况评估中的价值

目的 研究前哨淋巴结活检在乳腺癌新辅助化疗后的临床应用价值。方法 选择我院2007年9月至2010年11月期间收治的46例Ⅱ、Ⅲ期乳腺癌患者,接受新辅助化疗后超声检查腋窝淋巴结阴性者为研究对象。所有患者前哨淋巴结活检后行乳腺癌改良根治术及标准腋窝淋巴结清扫,所有前哨淋巴结行病理和免疫组化检查,非前哨淋巴结行常规病理检查。结果 前哨淋巴结活检的成功率、假阴性率、灵敏度、特异性、精确性、阳性预测值、阴性预测值分别是93.5%,3.7%,96.3%,100%,97.7%,100%,94.1%。结论 前哨淋巴结活检结合超声可以较准确的评价新辅助化疗后乳腺癌的腋窝淋巴结状态,对于决定患者是否需要行腋窝淋巴结清扫有一定参考价值。     

Sentinel lymph node biopsy after neoadjuvant chemotherapy in a patient with operable breast cancer

PURPOSE: This study was undertaken to assess the feasibility of performing a sentinel lymph node biopsy (SLNB) for a patient with operable breast cancer after undergoing neoadjuvant chemotherapy (NAC). METHOD: Between January 2002 and December 2003, women with primary breast cancer who had a breast tumor measuring larger than 3 cm in unilateral diameter were eligible for NAC. All patients who had completed NAC underwent lymphatic mapping with labeled (99m)Tc phytate on the day before surgery. Sentinel lymph node biopsy followed by a full axillary lymph node (AXLN) dissection (ALND) was performed in all patients. Sentinel lymph nodes (SLN) were sent for a frozen-section examination. RESULTS: The rate of SLN identification was 71%. Both the sensitivity and negative predictive value of SLNB were 100%. The false negative rate was 0%. When candidates for SLNB were restricted to patients with a breast tumor measuring less than 3 cm and clinically negative nodes after NAC, the rate of SLN identification increased to 93% from 71% while still maintaining the 0% false negative rate. CONCLUSION: Sentinel lymph node biopsy after NAC is therefore considered to be a feasible and accurate method to predict the AXLN status in patients who have a breast tumor measuring less than 3 cm in unilateral diameter and a clinically negative AXLN status at the time of surgery after NAC.     

Sentinel node biopsy prior to neoadjuvant chemotherapy

BACKGROUND: Several studies have explored sentinel lymph node biopsy (SLNB) after neoadjuvant chemotherapy, but false negative rates and the loss of pretreatment nodal staging are limitations. Sentinel lymph node biopsy prior to induction chemotherapy may address both. METHODS: Sentinel lymph node biopsy was performed in clinically node negative patients prior to initiating chemotherapy. Standard level I/II axillary lymph node dissection (ALND) was performed at the time of surgery in those patients who had metastases in the sentinel lymph node (SLN). RESULTS: Twenty-five patients had 26 SLNB prior to the initiation of chemotherapy. The SLN was identified in all cases (100%). Twelve patients (48%) were found to be node negative and did not require axillary node dissection after chemotherapy. Of the patients who were SLN positive and underwent completion ALND, residual nodal disease was identified in 60%. There were no surgical complications or delay of chemotherapy. CONCLUSIONS: Sentinel lymph node biopsy prior to neoadjuvant chemotherapy can avoid the morbidity of ALND without compromising the accuracy of axillary staging. It allows for identification of node positive patients subsequently rendered disease free in the regional nodes, which can assist in planning additional chemotherapy or radiation.     

Advantage of sentinel lymph node biopsy before neoadjuvant chemotherapy in breast cancer treatment

Lymph node status is a key factor in determining the stage of breast cancer and the most appropriate therapy and for predicting the outcome of patients. Accurate identification of sentinel lymph nodes (SLNs) preoperatively is of clinical importance. Sentinel lymph node biopsy (SLNB) causes less lymph edema of the upper arm than axillary lymph node dissection (ALND) with a high accuracy rate and low false-negative rate (FNR). Neoadjuvant chemotherapy (NAC) can be given not only to patients with locally advanced breast cancer, but also to those with axillary lymph node metastasis and an operable tumor. However, SLNB after NAC results in a lower identification rate and a higher FNR than SLNB before treatment. Recently, a hybrid imaging device has been developed, which consists of single photon emission computed tomography (CT, SPECT) and a low-dose CT installed on the same platform. This imaging system offers an easy and safe method of performing SLNB under local anesthesia. To identify the initial cancer stage in patients who will be treated by systemic therapy before surgery, SLNB should be performed prior to systemic treatments, using a well-developed navigating tool, such as SPECT/CT.     

Sentinel node biopsy after neoadjuvant chemotherapy for breast cancer

BACKGROUND: After neoadjuvant chemotherapy, while results of sentinel node biopsy (SNB) are encouraging, conditions that may affect sentinel node (SN) detection and false negative rates with respect to clinical and pathological tumor response after neoadjuvant therapy require investigation. METHODS: Thirty-four patients with clinical stage I, II and IIIA invasive breast cancer underwent neoadjuvant chemotherapy with doxorubicin/cyclophosphamide or doxorubicin/cyclophosphamide and docetaxel/segmental resection, SNB, and axillary node dissection (AND). RESULTS: SNs were found in 31 of 34 patients (91.2%). SNs were found in 20 of 21 patients (95.2%) with complete clinical tumor response, it was positive in 40% and no false negatives occurred. SNs were found in 11 of 13 patients (84.6%) with partial or no clinical tumor response; in four patients (33%) the SN was positive and no false negative nodes were found. Seven patients had complete pathological tumor response. SNs were found in six of these patients (85.7%). The SN was positive in 1 of 6 patients (16.7%) with no false negative. In 25 of 27 patients (92%) with partial or no pathological tumor response, the SN was identified. Eleven of these patients (44%) had positive nodes with no false negatives. CONCLUSIONS: SN identification rate and accuracy after neoadjuvant chemotherapy for breast carcinoma were extremely good however there is potential for inaccuracy after less than complete pathological tumor response. Further evaluation of SNB in larger clinical trial is warranted prior to accepting this approach as a standard care.     

Sentinel lymph node biopsy examination for breast cancer patients with clinically negative axillary lymph nodes after neoadjuvant chemotherapy

BACKGROUND: The feasibility and accuracy of sentinel lymph node (SLN) biopsy examination for breast cancer patients with clinically node-negative breast cancer after neoadjuvant chemotherapy (NAC) have been investigated under the administration of a radiocolloid imaging agent injected intradermally over a tumor. In addition, conditions that may affect SLN biopsy detection and false-negative rates with respect to clinical tumor response and clinical nodal status before NAC were analyzed. METHODS: Seventy-seven patients with stages II and III breast cancer previously treated with NAC were enrolled in the study. All patients were clinically node negative after NAC. The patients then underwent SLN biopsy examination, which involved a combination of intradermal injection over the tumor of radiocolloid and a subareolar injection of blue dye. This was followed by standard level I/II axillary lymph node dissection. RESULTS: The SLN could be identified in 72 of 77 patients (identification rate, 93.5%). In 69 of 72 patients (95.8%) the SLN accurately predicted the axillary status. Three patients had a false-negative SLN biopsy examination result, resulting in a false-negative rate of 11.1% (3 of 27). The SLN identification rate tended to be higher, although not statistically significantly, among patients who had clinically negative axillary lymph nodes before NAC (97.6%; 41 of 42). This is in comparison with patients who had a positive axillary lymph node before NAC (88.6%; 31 of 35). CONCLUSIONS: The SLN identification rate and false-negative rate were similar to those in nonneoadjuvant studies. The SLN biopsy examination accurately predicted metastatic disease in the axilla of patients with tumor response after NAC and clinical nodal status before NAC. This diagnostic technique, using an intradermal injection of radiocolloid, may provide treatment guidance for patients after NAC.