Ultrasound-Guided Fine-Needle Aspiration of Non-palpable and Suspicious Axillary Lymph Nodes with Subsequent Removal after Tattooing: False-Negative Results and Concordance with Sentinel Lymph Nodes

Ultrasonography-guided fine-needle aspiration (US-guided FNA) for axillary lymph nodes (ALNs) is currently used with various techniques for the initial staging of breast cancer and tagging of ALNs. With the implementation of the tattooing of biopsied ALNs, the rate of false-negative results of US-guided FNA for non-palpable and suspicious ALNs and concordance with sentinel lymph nodes were determined by node-to node analyses. A total of 61 patients with breast cancer had negative results for metastasis on US-guided FNA of their non-palpable and suspicious ALNs. The biopsied ALNs were tattooed with an injection of 1–3 mL Charcotrace (Phebra, Lane Cove West, Australia) ink and removed during sentinel lymph node biopsy or axillary dissection. We determined the rate of false-negative results and concordance with the sentinel lymph nodes by a retrospective review of surgical and pathologic findings. The association of false-negative results with clinical and imaging factors was evaluated using logistic regression. Of the 61 ALNs with negative results for US-guided FNA, 13 (21%) had metastases on final pathology. In 56 of 61 ALNs (92%), tattooed ALNs corresponded to the sentinel lymph nodes. Among the 5 patients (8%) without correspondence, 1 patient (2%) had 2 metastatic ALNs of 1 tattooed node and 1 sentinel lymph node. In multivariate analysis, atypical cells on FNA results (odds ratio = 20.7, p = 0.040) was independently associated with false-negative FNA results. False-negative ALNs after US-guided FNA occur at a rate of 21% and most of the tattooed ALNs showed concordance with sentinel lymph nodes.     

Detection of sentinel lymph nodes with lymphazurin in cervical, uterine, and vulvar malignancies

BACKGROUND: Identification of sentinel lymph nodes may allow prediction of metastatic disease in cancer patients. We did a prospective study to determine whether lymphazurin dye could identify sentinel lymph nodes in patients with cervical, uterine, and vulvar cancer. METHODS: In 33 patients having surgery for either uterine, cervical, or vulvar carcinoma, lymphazurin dye was injected into the respective organs before the tumor and node dissection began. Sentinel lymph nodes were identified and dissected in situ. RESULTS: The identification rate of sentinel lymph nodes was 0/8 (0%) for uterine cancer patients, 2/13 (15.4%) for cervical cancer patients, and 9/12 for vulvar cancer patients (75%). CONCLUSIONS: In a limited number of patients, lymphazurin day may be useful in identifying or assessing the sentinel nodes draining vulvar and cervical cancers. The role of this procedure in treatment planning for patients with gynecologic malignancies is yet to be determined.     

乳腺癌前哨淋巴结活检指导腋窝淋巴结清扫

目的探讨前哨淋巴结活检（SLNB）对乳腺癌腋窝淋巴结（ALN）转移状态的预测价值,为指导乳腺癌患者是否行腋窝淋巴结清扫（ALND）提供科学依据。方法2005～2008年本院手术治疗的乳腺癌患者36例患者,采用术前2 h注射99M锝-右旋糖苷（99M Tc-dx）1 ml于肿瘤周围腺体内和术中1%亚甲蓝2 ml（总剂量）四点法注射于肿瘤覆盖皮肤之皮内,术中前哨淋巴结活检,随后行包括ALND的不同方式的根除术。所有前哨淋巴结（SLN）术中冷冻病理检查为单切片HE染色,所有SLN和非SLN均再行多层切片HE染色及免疫组织化学病理学检查。结果根据术中切片病理和术后腋窝淋巴结病理,SLN检出成功率为94.4%（34/36）;SLN预测ALN转移的准确性为94.1%（32/34）,灵敏度为85.7%（12/14）,特异性为100%（20/20）,假阴性率为14.3%（2/14）,总的阳性、阴性预测值分别为100%（12/12）和90.9%（20/22）。与单切片HE染色相比,多层切片HE染色和免疫组织化学检查使灵敏度提高至92.9%（13/14）,假阴性率降低至7.14%（1/14）。结论亚甲蓝法和放射性示踪法联合应用能准确检测出SLN,SLN能反映腋窝淋巴结的状态。术中多层切片HE染色可降低前哨淋巴结假阴性率。     

纳米炭示踪剂在进展期胃癌根治术中应用

目的探讨术中淋巴结示踪定位技术对进展期胃癌淋巴清扫的指导作用。方法术中肿瘤周围注射第三代淋巴结示踪剂—纳米炭混悬液,在D2根治术的基础上以黑染淋巴结为导向进行个体化清扫。统计清扫淋巴结的数目及淋巴结转移情况、黑染情况,并观察不良反应及并发症的发生。结果本组平均每例清扫淋巴结(26.2±12.1)枚,其中阳性淋巴结(7.1±2.3)枚;淋巴结黑染率为54.3%,黑染淋巴结中发生转移的阳性率32.4%,高于未黑染淋巴结13.1%,差异有统计学意义(P<0.05)。结论进展期胃癌在D2根治术的基础上以术中淋巴显影技术为指导进行个体化清扫,能增加淋巴结清扫的彻底程度,并可提高清扫转移淋巴结的效率,但肿瘤进展程度会影响淋巴显影效果。     

结直肠癌前哨淋巴结体内外定位方法的比较及其隐匿转移检测研究

目的比较结直肠癌患者体内外前哨淋巴结（SLN）定位法各自的检出率、准确性和特异性并分析淋巴结隐匿转移检测的临床应用价值。方法86例结直肠癌行前哨淋巴结定位检测,体外和体内法分别为40例和46例．所有获得的前哨淋巴结及非前哨淋巴结均给予连续切片及以CK20为标记物的免疫组织化学分析．计算两组患者的淋巴结检出率、特异性、准确性、假阴性率及病理分期提高率。结果体外组和体内组在肿瘤大小、位置、分期及分化程度上差异无统计学意义（x2分别=0．59、0．97、0．67、0．76,P均〉0．05）。体外组和体内组前哨淋巴结平均检出数分别为2．62±1．95和2．33±0．91．检出率分别为87．50％和89．13％,准确性分别为90．00％和85．71％。假阴性率分别为10．00％和14．29％,两组差异均无统计学意义（t=0．50,X2分别=1．13、1．82、0．63,P均〉0．05）。两组患者病理分期提高率分别为15．38％和20．69％,差异无统计学意义（x2=0．92,P〉0．05）,全组病例总体分期提高率为18．18％。结论体外法和体内法具有相似的的栓出率和准确性,但体外法简单易行,可减少手术时间;对前哨淋巴结进行免疫组织化学检测可发现隐匿转移从而提高部分患者的病理分期,最终使患者从综合治疗中获益。     

The role of preoperative lymphoscintigraphy in surgery planning for sentinel lymph node biopsy in malignant melanoma

AIM: To evaluate four years of preoperative lymphoscintigraphy experience and the accuracy of sentinel lymph node biopsy in our institution in melanoma patients with various tumor thicknesses. An additional aim was to evaluate the recurrence rate related to pathohistological findings. METHODS AND PATIENTS: During the period from February 2002 to November 2005, 201 patients underwent sentinel node biopsy. Lymphoscintigraphy for identification of sentinel nodes was performed four to six hours prior to operation of the patient. Sentinel lymph node biopsy using an intraoperative hand-held gamma probe was performed in all patients, together with wide local excision of biopsy wound or primary lesion (N=56). Immediate complete basin dissection was performed in patients with sentinel node metastases. In four patients delayed complete lymph node dissection was performed after definitive histopathologic examination of sentinel nodes. The accuracy of sentinel node biopsy was determined by comparing the intraoperative rates of sentinel node identification and the subsequent development of nodal metastases in regional nodal basins in patients with tumor-negative sentinel nodes and in those with tumorpositive sentinel nodes. RESULTS: Using preoperative lymphoscintigraphy, we identified sentinel nodes in all but one of the 201 patients (99.0%), and in 248 nodal basins (1.2/patient) we observed 372 sentinel nodes (1.52 sentinels/basin; 1.8 sentinels/patient). The highest number of sentinel nodes was noticed in the groin of patients with melanoma on the lower extremities (1.5/patient), followed by the axilla (1.3/patient). Anomalous lymphatic drainage patterns were observed in 15.0% of all patients. The identification rate of sentinel nodes was 99.0% overall: 100% for the groin basins, and 98.0% for the axilla and head and neck basin. Forty-two patients (20.8%) had tumor-positive sentinel nodes. Ten patients (5.0%) had local or distant recurrences during a median follow-up of 23.1 months (range 2-46). The rate of false-negative lymphatic mapping and sentinel node biopsy as measured by nodal recurrence in patients with tumor-negative sentinel nodes was 1.3%. During the follow-up period, three of 201 patients died from other diseases and three patients died as the result of melanoma metastases, with a median follow-up of 13.5 months (range 12-22). CONCLUSION: Preoperative lymphoscintigraphy is a sensitive, inexpensive and essential method for the identification of drainage basins, determination of the number and position of sentinel nodes and their location outside the usual nodal basins. Scintigraphic findings may lead to changes in surgical management due to the unpredictability of lymphatic drainage. The low incidence of regional disease recurrence in patients with tumor-negative sentinel nodes supports the use of preoperative lymphoscintigraphy and sentinel node biopsy as a safe and accurate procedure for staging the regional nodal basin in patients with malignant melanoma.     

吲哚菁绿近红外光成像系统在非小细胞肺癌术中探寻前哨淋巴结的临床应用研究

目的：研究应用吲哚菁绿（ICG）近红外光成像系统术中探寻非小细胞肺癌（NSCLC）前哨淋巴结（SLN）的可行性及其判断区域淋巴结转移情况的准确性。方法17例cⅠa～cⅡa 期NSCLC患者,术中癌周围注射ICG 15 min后,行SLN检测,近红外光成像系统作用下发光淋巴结定义为SLN,并行肺叶切除及标准的系统性淋巴结清扫术,所有淋巴结送病理学检查。结果共14例患者成功识别SLN,SLN的识别率、假阴性率分别为82.4%和0,与染色法和核素法相比,有较高的识别率和较低的假阴性率。结论应用吲哚菁绿近红外光成像系统术中探寻早期 NSCLC 前哨淋巴结是一种安全可行的有效的判断区域淋巴结状态的方法。     

哨兵淋巴结活检预测结肠癌淋巴结转移的价值

目的探讨哨兵淋巴结活检(SLNB)预测结肠癌患者淋巴结转移状态的重要性和可行性。方法使用亚甲蓝对42例结肠癌患者进行SLNB,随后行标准的结肠癌根治术。哨兵淋巴结阴性患者进行连续切片病理检测。结果SL-NB成功率为80.95%,敏感度为97.06%,特异度为100%,预测淋巴结转移状态率为95.45%,假阴性率为4.55%。结论利用亚甲蓝淋巴定位方法进行的SLNB可以准确预测淋巴结转移状态,SLN连续切片、HE染色检测有助于提高SLNB的敏感性。     

Importance of sentinel lymph nodes in colorectal cancer: A pilot study

Accurate identification of lymph nodes involved in metastases is vitally important for predicting survival, and it facilitates decision making with regard to adjuvant therapy. The study described here, which was undertaken to evaluate the role of sentinel lymph node mapping in refining the staging of colorectal cancer, was performed prospectively in 19 patients with colorectal cancer who underwent surgery from January to July 2005. Sentinel lymph node sampling was performed during each operation with isosulfan blue dye. Additional immunohistochemical staining was performed only if the sentinel nodes were negative for metastasis. In 18 of 19 patients, at least 1 sentinel node was identified. In 5 of 18 patients, sentinel nodes were positive for metastasis, and in 3 of 5, the sentinel node was the only node containing metastasis that was detected by immunohistochemical staining. In 3 patients, metastases in nonsentinel lymph nodes were detected by hematoxylin and eosin staining; these were determined to be false-negative results. Upstaging associated with sentinel lymph node mapping may reveal disease that might otherwise remain undetected by conventional methods. Patients who are upstaged may benefit from adjuvant therapies that have been shown to improve survival.     

99mTc标记硫胶体淋巴显像探测皮肤恶性黑色素瘤前哨淋巴结的价值

目的：探讨99mTc 标记硫胶体（99mTc-SC）淋巴显像探测皮肤恶性黑色素瘤前哨淋巴结（SLN）的临床应用价值和影响因素。方法选取99例Ⅰ、Ⅱ期皮肤恶性黑色素瘤患者,术前4-6 h在肿瘤病灶周围皮下注射显像剂99mTc-SC,行早期局部及延迟全身显像,结合显像进行体表定位。随后行前哨淋巴结活检术（SLNB）,对初诊患者加行原发病灶切除术,对SLN及原发病灶行详细病理检查。结果99mTc-SC的SLN总检出率为90.9%（90/99）,检出率与原发灶部位有关（P＜0.001）;区间淋巴结检出率为7.1%（7/99）;SLN转移阳性率为28.9%（26/90）,与肿瘤的病理组织学特点（Breslow厚度、Clark分级）呈正相关;假阴性率为3.7%（1/27）,灵敏度为96.3%（26/27）,特异度为98.4%（63/64）。结论99mTc-SC显像可准确显示SLN部位及淋巴引流情况,减少药物标记时间,进一步提高区域淋巴结检出,为恶性黑色素瘤区域淋巴结的诊治决策提供重要的临床依据。     

常规超声、超声弹性成像和经皮超声造影在乳腺癌前哨淋巴结诊断中的价值比较

  目的  探讨常规二维超声、超声弹性成像技术和经皮超声造影（CEUS）对乳腺癌患者同侧腋窝前哨淋巴结的诊断价值。  方法  对158例乳腺癌患者进行回顾性分析,术前均行常规二维超声、超声弹性成像、CEUS及粗针穿刺,以病理穿刺结果为金标准,与病理结果一致性进行Kappa检验,以病理诊断前哨淋巴结转移为因变量,以常规二维超声、超声弹性成像和CEUS为自变量,建立Logistic回归模型,并用ROC曲线评价常规二维超声、超声弹性成像和CEUS对乳腺癌前哨淋巴结的诊断价值。  结果  经病理诊断共检出206个淋巴结,其中转移性76个,非转移性130个。常规二维超声检查对乳腺癌前哨淋巴结转移的敏感度为69.7%,特异性为94.6%,准确度为85.4%;应用超声弹性成像技术检查的敏感度为84.0%,特异性为96.9%,准确度为92.2%;CEUS检查的敏感度为88.3%,特异性为98.4%,准确度为94.7%;三者联合检查的敏感度为93.4%,特异性为99.2%,准确度为97.1%;与病理结果一致性进行比较,弹性成像、CEUS的一致性均高于常规二维超声,三者联合诊断的一致性最好（Kappa= 0.683、0.828、0.884、0.937,P < 0.05）。ROC曲线显示:常规二维超声、超声弹性成像、CEUS和三者联合诊断乳腺癌前哨淋巴结转移的曲线下面积为0.668、0.712、0.738、0.756。  结论  超声弹性成像技术、CEUS对乳腺癌前哨淋巴结的诊断价值均高于常规二维超声,且三者联合诊断的敏感度、特异性、准确性更高,对术前乳腺癌患者同侧转移性前哨淋巴结的诊断具有重要价值。      

胸腔镜手术与开胸手术在胸段食管癌患者淋巴结清扫中的对比

目的探讨胸腔镜手术与开胸手术下胸段食管癌患者的淋巴结清扫状况。方法选取2012年8月-2015年6月在该院接受胸腔镜手术治疗的胸段食管癌患者16例(微创组),选取同期经传统开胸手术的相同病理分期的胸段食管癌患者17例(传统组),比较两组患者清扫淋巴结数、阳性率及淋巴结转移情况。结果微创组16例,清扫淋巴结总数228枚,均数(14.27±5.61)枚,阳性率为12.50%;传统组17例,清扫淋巴结总数241枚,均数(16.20±6.24)枚,阳性率为11.76%。两组不同病理分期患者淋巴结清扫数差异无统计学意义(P0.05)。微创组转移淋巴结例数7例,转移淋巴结45枚,转移率为43.75%,转移度为19.74%;传统组转移淋巴结例数8例,转移淋巴结55枚,转移率为47.06%,转移度为22.82%。结论微创手术能够取得与传统开胸手术一致的淋巴结清扫效果,在胸段食管癌的临床治疗方面具有较高可操作性。     

乳腺癌前哨淋巴结解剖学定位及其临床意义的研究

目的探讨乳腺癌前哨淋巴结（sentinel lymphnode,SLN）解剖学定位及临床意义,为临床提供参考。方法回顾性分析2011年1月至2012年7月行乳腺癌前哨淋巴结活检患者152例,染料组术前15min将1％亚甲蓝2m1注射在肿瘤周围皮下组织的方法检测前哨淋巴结;观察组在染料法的基础上联合核素法,参照腋窝淋巴结结果,计算2组前哨淋巴结活检的诊断准确性、敏感度和假阴性率,分析前哨淋巴结的解剖学定位和前哨淋巴结活检的临床意义。结果观察组和染料组检出率、灵敏度、假阴性率及阳性预测率进行比较,其中检出率和假阴性率,差异有统计学意义（P〈0．05）;而两组的灵敏度及阳性预测率,差异无统计学意义（P〉0．05）。结论采用染料法联合核素法检测前哨淋巴结,是最可靠的定位方法,值得临床推广应用。     

应用美蓝显示乳腺癌前哨淋巴结病理检查的意义

目的：研究乳腺癌前哨淋巴结病理检查的临床意义。方法：在乳腺癌根治性切除手术开始时将美蓝2ml注射于乳腺肿瘤区域，在切除标本中寻找蓝染的前哨淋巴结以及未染色的淋巴结，均行HE染色病理检查。结果：64例乳腺癌患者中显示蓝染色的前哨淋巴结定位成功55例，成功率85．9％(55／64)，前哨淋巴结癌转移率为58．2％(32／55)，前哨淋巴结与非前哨淋巴结病理检查符合率为96．4％(53／55)，前哨淋巴结假阴性率为3．6％(2／55)。结论：乳腺癌前哨淋巴结检查对预测腋窝淋巴结状态的可靠性尚有待进一步研究提高。     

临床早期乳腺癌前哨淋巴结活检替代腋清扫术的研究

目的　探讨前哨淋巴结活检术 (sentinellymphnodebiopsy ,SLNB)在乳腺癌治疗中的应用。 方法　使用蓝染料和 /或99mTc标记的硫胶体对 1999年 9月～ 2 0 0 2年 12月山东省肿瘤防治研究院连续收治的 42 3例临床查体腋窝淋巴结阴性乳腺癌患者行前哨淋巴结活检术 ,对 60例患者进行SLNB替代全腋窝淋巴结切除术 (axillarylymphnodedissection ,ALND)的前瞻性研究。结果　SLNB成功率为 98 6% (4 17/4 2 3 ) ,准确率为 93 0 % ,假阴性率为 16 5 %。单纯蓝染料法的分别为98 1% ,91 4%和 2 1 3 % ;联合使用蓝染料和99mTc标记的硫胶体组者分别为 10 0 % ,98 0 %和 4 1%。SLNB的方法对成功率和假阴性率有显著性影响。 60例患者进行了SLNB替代ALND的研究 ,其中 13例因术中发现前哨淋巴结转移而进行AL ND ,SLNB替代ALND者未发现明显术后并发症 ,47例仅行SLNB患者中位随访 8个月 ,未发现腋淋巴结复发者。结论　SLN能够准确预测腋窝淋巴结的转移状况 ,联合法的假阴性率明显低于单用染料法者。SLNB缩小了手术范围、减轻患者术后并发症 ,近期结果良好     

头颈部恶性肿瘤患者颈部肿大淋巴结的超声诊断

目的探讨头颈部恶性肿瘤患者颈部肿大淋巴结的超声诊断价值。方法回顾分析经手术证实的46例头颈部恶性肿瘤患者颈部肿大淋巴结的超声检出情况。二维及彩色多普勒超声观察患者颈部肿大淋巴结的数目、纵横比、形态、边界、内部回声、有无微小钙化及内部血流状态等。结果46例患者中甲状腺癌22例、鼻咽癌15例、恶性淋巴瘤9例。超声检查共探及颈部肿大淋巴结93枚。术后经病理诊断为肿瘤淋巴结转移者75枚,非淋巴结转移18枚。肿瘤转移淋巴结纵横比〈1．5者占84．9％,内部回声不均者占75．3％,边界欠规则者占74．0％、淋巴结内可见微小钙化者占32．9％。转移性和非转移性淋巴结组间上述超声指标比较,差异均具有统计学意义（P〈0．05）。转移性淋巴结血流分布较丰富,多普勒血流速度（PSV）和阻力指数（RI）也高于非转移性淋巴结（P〈0．05）。结论超声是诊断头颈部恶性肿瘤颈部淋巴结转移的一种简便、有效的方法。     

Contrast-Enhanced Ultrasound-Guided Fine-Needle Aspiration for Sentinel Lymph Node Biopsy in Early-Stage Breast Cancer

The purpose of this study was to assess whether translymphatic contrast-enhanced ultrasound (CEUS) combined with fine-needle aspiration (FNA) can be used pre-operatively to assess the status of axillary lymph nodes in early-stage breast cancer patients. Furthermore, we wanted to determine whether this less invasive method could potentially be a pre-operative surgical strategy. One hundred sixty-four sentinel lymph nodes (SLNs) were detected by CEUS after intradermal injection of microbubbles in 126 cases. One hundred twenty of 126 cases (95.24%) were accurately diagnosed with the SLN-FNA method. All 6 false-negative cases were due to micrometastasis or macrometastasis. There were no false-positive results after CEUS-guided FNA biopsy based on post-operative histopathological results. In conclusion, translymphatic CEUS combined with SLN-FNA is a less traumatic approach that has high accuracy in the pre-operative evaluation of axillary lymph node status. It might have the potential to be as reliable an indicator for axillary lymph node dissection as SLN biopsy.     

乳腺癌前哨淋巴结活检在新辅助化疗后的应用价值

目的通过对比术前未接受化疗和术前接受新辅助化疗两组乳腺癌患者前哨淋巴结活检的结果,探讨对术前接受新辅助化疗后降期的患者以核素法行前哨淋巴结活检的临床价值。方法以本院2006年4月~2009年3月期间收治的99例乳腺癌患者作为研究对象。术前未行化疗组60例,临床分期为T1~2N0M0,直接行前哨淋巴结活检。术前新辅助化疗组39例,临床分期T2~3N0M0,患者术前先给予3~4个疗程的新辅助化疗,降期为T1~2N0M0后再行前哨淋巴结活检。所有患者术前均经乳晕下4点平均注射99m锝标记的非过滤硫胶体,术中用γ探针探测腋窝具有放射活性的前哨淋巴结并切除,然后常规清扫腋窝Ⅰ、Ⅱ组淋巴结。术后对前哨淋巴结活检和腋窝淋巴结清扫的病理结果进行比较分析。结果A组成功率、假阴性率、灵敏度、特异度、准确性、阳性预测值和阴性预测值分别为98.3%、3.3%、96.7%、100%、98.3%、100%和96.7%。B组分别为100%、10%、90%、100%、94.9%、100%和90.5%。两组比较假阴性率、准确性均无统计学差异。(P均>0.05)。结论对新辅助化疗后降期的局部进展期乳腺癌患者,以核素法行前哨淋巴结活检仍能够获得较高的成功率,同早期乳腺癌患者相比假阴性率没有统计学差异。     

美蓝染色法乳腺癌前哨淋巴结活检100例临床应用研究

目的探讨乳腺癌前哨淋巴结活检术（sentinel lymph node biopsy,SLNB）的应用价值。方法以100例可手术乳腺癌患者作为研究对象,临床体检腋窝淋巴结（ALN）阴性,均单独采用美蓝作为前哨淋巴结（sentinel lymph node,SLN）示踪剂。结果全部行乳腺癌改良根治术,行SLN和ALN活检,灵敏度为97．44％,准确率为92．71％,假阴性率为10．26％,假阳性率7．69％。SLNB与ALN转移检测比较效果相一致,准确率高,统计无差异性。结论应用美蓝进行SLN的认定有利于简化乳腺癌手术方式,提高患者术后生活质量。     

超声对乳腺癌腋窝淋巴结的诊断价值

目的 探讨超声在致密型乳腺疾病中的诊断价值.方法 回顾性分析115例致密型乳腺患者和304例非致密型乳腺患者的超声声像图表现,并与其钼靶X线检查结果和病理结果相比较,统计分析超声对致密型乳腺疾病的检出率和诊断准确率.结果 超声对致密型、非致密型乳腺中的病灶检出率分别为96.3%、98.3%,均显著高于钼靶(36.0%、83.7%;P＜0.01).在致密型乳腺患者中,超声对乳腺癌的诊断敏感度显著高于钼靶(83.9%、51.6%;P＜0.01),但超声对乳腺癌的诊断特异度低于钼靶(88.6%、98.1%;P＜0.01),两者对于乳腺癌的诊断准确度均为87.5%.超声和钼靶对于非致密型乳腺的乳腺癌诊断敏感度、特异度、准确度差异均无统计学意义(P＞0.05).结论 乳腺超声显著提高了致密型腺体中病灶的检出率和乳腺癌的诊断敏感度,是致密型乳腺患者重要补充检查手段.