• 【与侵袭性乳腺癌相关的导管癌原位和末端导管小叶单位的组织微阵列的构建和验证。】 复制标题 收藏 收藏
    DOI:10.1097/01.pdm.0000213453.45398.e0 复制DOI
    作者列表:Yang XR,Charette LA,Garcia-Closas M,Lissowska J,Paal E,Sidawy M,Hewitt SM,Rimm DL,Sherman ME
    BACKGROUND & AIMS: :Construction of tissue microarrays (TMAs) to efficiently characterize large sets of noninvasive epithelial lesions in the breast by immunohistochemistry is an appealing investigative approach, but presents technical challenges. We report methodologic studies performed to optimize methods for building TMAs from noninvasive breast tissues collected in a large case-control study of breast cancer. Using a manual arraying technique with 2.0-mm diameter needles, we constructed TMAs from specimens obtained from 32 women with breast cancer containing the following targets: (1) 28 terminal duct lobular units (TDLUs); (2) 28 ductal carcinomas in situ, and (3) 23 invasive carcinomas. Using careful target selection, we achieved representation of approximately 80% of noninvasive targets with sustained preservation through section 30 of the TMAs. Immunohistochemical staining of TDLU targets demonstrated positive staining for estrogen receptor (ER) in 30.8% of tubules and for progesterone receptor (PR) in 50.0%. To establish an efficient method to evaluate staining results in TDLUs, we created a categorical scoring system to approximate the percentage of tubules containing positive stained cells (<10%, 10% to 50%, >or=50%), and compared the results with those obtained by tubule counting. Comparison between the two methods demonstrated exact agreement for 70.8% of ER and 79.2% of PR stains without two-category discrepancies. ER/PR expression levels in multiple (up to 4) noninvasive targets of the same tissue type (TDLU or DCIS) from a single block showed good correlation. These data suggest that it is feasible to produce TMAs of noninvasive breast structures, albeit with careful selection of targets, and that immunostains of such cores may permit efficient immunohistochemical characterization of peritumoral tissues. Additional exploration of this approach is needed.
    背景与目标: :通过免疫组织化学法构建组织微阵列(TMA)以有效表征乳腺中大量非侵袭性上皮病变的方法是一种有吸引力的研究方法,但也带来了技术挑战。我们报告进行的方法学研究,以优化从大型乳腺癌病例对照研究中收集的无创乳腺组织中构建TMA的方法。我们使用直径为2.0毫米针头的手动排列技术,从32位乳腺癌女性的标本中构建了TMA,这些标本包括以下目标:(1)28个末梢小叶单位(TDLU); (2)28例原位导管癌,(3)23例浸润性癌。通过精心选择目标,我们通过TMA第30节实现了约80%的非侵入性目标的代表,并得到了持续的保护。 TDLU靶标的免疫组织化学染色显示,在30.8%的肾小管中,雌激素受体(ER)阳性染色,在50.0%中,孕激素受体(PR)染色阳性。为了建立一种有效的方法来评估TDLU中的染色结果,我们创建了一个分类评分系统,以估计含有阳性染色细胞的小管的百分比(<10%,10%至5​​0%,>或= 50%),并比较结果与那些通过肾小管计数获得的。两种方法之间的比较表明,ER染色的70.8%和PR染色的79.2%完全吻合,没有两类差异。单个区域中相同组织类型(TDLU或DCIS)的多个(多达4个)非侵入性靶标中的ER / PR表达水平显示出良好的相关性。这些数据表明,尽管精心选择了靶标,但生产无创性乳房结构的TMA是可行的,并且此类核心的免疫染色可允许对肿瘤周围组织进行有效的免疫组织化学表征。需要对该方法进行其他探索。
  • 【使用ANOVA和Taguchi方法进行乳腺肿瘤识别的生物势方程的参数研究。】 复制标题 收藏 收藏
    DOI:10.1007/s11517-005-0006-0 复制DOI
    作者列表:Ng EY,Ng WK
    BACKGROUND & AIMS: :Extensive literatures have shown significant trend of progressive electrical changes according to the proliferative characteristics of breast epithelial cells. Physiologists also further postulated that malignant transformation resulted from sustained depolarization and a failure of the cell to repolarize after cell division, making the area where cancer develops relatively depolarized when compared to their non-dividing or resting counterparts. In this paper, we present a new approach, the Biofield Diagnostic System (BDS), which might have the potential to augment the process of diagnosing breast cancer. This technique was based on the efficacy of analysing skin surface electrical potentials for the differential diagnosis of breast abnormalities. We developed a female breast model, which was close to the actual, by considering the breast as a hemisphere in supine condition with various layers of unequal thickness. Isotropic homogeneous conductivity was assigned to each of these compartments and the volume conductor problem was solved using finite element method to determine the potential distribution developed due to a dipole source. Furthermore, four important parameters were identified and analysis of variance (ANOVA, Yates' method) was performed using design (n = number of parameters, 4). The effect and importance of these parameters were analysed. The Taguchi method was further used to optimise the parameters in order to ensure that the signal from the tumour is maximum as compared to the noise from other factors. The Taguchi method used proved that probes' source strength, tumour size and location of tumours have great effect on the surface potential field. For best results on the breast surface, while having the biggest possible tumour size, low amplitudes of current should be applied nearest to the breast surface.
    背景与目标: :大量文献显示,根据乳腺上皮细胞的增殖特性,进行性电变化的显着趋势。生理学家还进一步假设,恶性转化是由于持续的去极化和细胞分裂后细胞无法重新极化所致,因此与非分裂或静止状态的癌症相比,癌症发展的区域相对去极化了。在本文中,我们提出了一种新的方法,即Biofield Diagnostic System(BDS),它可能具有增强乳腺癌诊断过程的潜力。该技术基于分析皮肤表面电势以鉴别诊断乳房异常的功效。我们通过将乳房视作处于仰卧状态的半球,且各层厚度不相等,从而开发出了接近实际的女性乳房模型。各向同性的电导率分配给这些隔室中的每一个,并使用有限元方法解决了体积导体问题,以确定由偶极子源产生的电势分布。此外,确定了四个重要参数,并使用设计进行了方差分析(ANOVA,Yates方法)(n =参数数量4)。分析了这些参数的作用和重要性。 Taguchi方法进一步用于优化参数,以确保与其他因素产生的噪声相比,来自肿瘤的信号最大。使用的Taguchi方法证明了探针的源强度,肿瘤大小和肿瘤位置对表面电势场有很大的影响。为了在乳腺表面获得最佳效果,同时应尽可能增大肿瘤的大小,应在最靠近乳腺表面的地方施加较小的电流。
  • 【前列腺特异性抗原在良性和恶性乳腺组织中的免疫组织化学定位。】 复制标题 收藏 收藏
    DOI:10.1038/bjc.1997.280 复制DOI
    作者列表:Howarth DJ,Aronson IB,Diamandis EP
    BACKGROUND & AIMS: Prostate-specific antigen (PSA), a glycoprotein initially thought to be produced only by the epithelial cells of the prostate, has recently been found in 30% of female breast tumours using immunofluorometry. Our aim was to localize PSA immunohistochemically in a selected group of 27 paraffin-embedded breast tissues. A scoring system was developed for the histological assessment of PSA positivity within the breast tissue. One pathologist (DH) scored, classified and graded all tumours. Site-specific PSA staining was noted in the histology slides. Intense staining was identified in apocrine metaplasia and within the lining ductal epithelium of cystically dilated ducts. The epithelium in lesions of sclerosing adenosis was also frequently positive for PSA staining. Hyperplastic ductal epithelium (especially of mild degree) occasionally stained positive, as did normal breast ducts. Better differentiated tumours showed PSA staining [e.g. mucinous carcinoma (colloid)]. If an infiltrating duct carcinoma showed staining for PSA, adjacent intraductal carcinoma was also noted to stain positively, if present.

    背景与目标: 前列腺特异性抗原(PSA)是一种最初被认为仅由前列腺上皮细胞产生的糖蛋白,最近在30%的女性乳腺肿瘤中使用免疫荧光法发现了这种蛋白。我们的目标是通过免疫组织化学方法将PSA定位在27个石蜡包埋的乳腺组织中。开发了评分系统用于乳腺组织内PSA阳性的组织学评估。一名病理学家(DH)对所有肿瘤进行了评分,分类和分级。组织学幻灯片中记录了位点特异性PSA染色。在顶泌化生和囊性扩张管的衬里导管上皮中鉴定到强染色。硬化性腺病病灶中的上皮也常对PSA染色呈阳性。增生性导管上皮(尤其是轻度导管)偶尔染色为阳性,正常乳腺导管也是如此。分化更好的肿瘤表现出PSA染色[例如粘液癌(胶体)]。如果浸润性导管癌显示PSA染色,则也可以发现邻近的导管内癌也呈阳性染色。

  • 【[非洲男性乳腺癌,瓦加杜古大学教学医院(布基纳法索)的Apropos 5例)。】 复制标题 收藏 收藏
    DOI: 复制DOI
    作者列表:Sano D,Dao B,Lankoandé J,Touré B,Sakandé B,Traoré SS,Wandaogo A,Dakouré R,Sanou A
    BACKGROUND & AIMS: :A retrospective study of male breast cancer was undertaken at Ouagadougou University Teaching Hospital over a 3 year period (1993-1996). Authors report 5 cases representing 4.16% of all breast cancers. The patients' mean age was 61 years. The average duration of signs and symptoms before the diagnosis was 13 months. Clinically all the 5 cases presented advanced cancers (4 T4N2M0, 1 T4N2M1 according to UICC TNM System) with size ranging from 5.5, to 11.5 cm. Histology found: 2 medullary infiltrating carcinoma, 1 canalar infiltrating carcinoma, 1 colloid mucous carcinoma and 1 lobular infiltrating carcinoma. All patients had mastectomy associated with axillary clearance in 4 cases. Radiotherapy, chemotherapy and hormonotherapy were not associated because unavailable in Burkina Faso. Three patients died: the first, 10 days after surgical treatment and the 2 others respectively after 14 and 17 months. We have lost sight 1 patients. The last one is still alive. Authors find that to get better prognosis, it is important to improve medical and technical means, to increase information and to promote early detection.
    背景与目标: :在瓦加杜古大学教学医院进行了为期3年(1993年至1996年)的男性乳腺癌回顾性研究。作者报告了5例病例,占所有乳腺癌的4.16%。患者的平均年龄为61岁。诊断前平均体征和症状持续时间为13个月。临床上,所有5例患者均出现晚期癌(根据UICC TNM System,4例T4N2M0、1例T4N2M1),大小在5.5至11.5厘米之间。组织学发现:2个髓样浸润癌,1个管状浸润癌,1个胶体粘​​液癌和1个小叶浸润癌。所有患者均进行了伴有腋窝清除术的乳房切除术4例。放疗,化学疗法和激素疗法没有联系,因为布基纳法索无法使用。 3例患者死亡:第一例,手术治疗10天后死亡,另外2例分别在14个月和17个月后死亡。我们失去了视力1例患者。最后一个还活着。作者发现,要获得更好的预后,重要的是改善医学和技术手段,增加信息并促进早期发现。
  • 【在前哨淋巴结乳腺显像术中乳晕周围注射Tc-99m锑硫胶体可成功实现内部乳腺可视化。】 复制标题 收藏 收藏
    DOI:10.1097/01.rlu.0000238426.55533.f6 复制DOI
    作者列表:Ting AC,Cumarasingam B,Szeto ER
    BACKGROUND & AIMS: PURPOSE:The subareolar and periareolar injection techniques result in higher detection rates and do not require tumor localization in impalpable lesions when compared with the peritumoral technique. One of the main criticisms, however, is the widely reported inability to detect internal mammary nodes. This contrasts with our clinical experience using Tc-99m antimony sulfur colloid, in which internal mammary nodes are commonly seen. METHODS:A retrospective analysis of 241 patients over 38 months was performed to investigate the ability of our periareolar injection technique to detect internal mammary lymph node drainage in breast cancer sentinel node lymphoscintigraphy. Four injections of 5 to 10 MBq (0.14-0.27 mCi) Tc-99m antimony sulfur colloid were administered on the day of surgery followed by massage and imaging. The radioisotope was suspended in 0.1 mL with a 0.5-mL air lock. Each injection was performed over 2 seconds with a 25-gauge needle at a depth of 1.1 to 1.3 cm. Patients whose records could not be retrieved or who underwent an injection technique apart from periareolar or peritumoral were removed from the analysis. RESULTS:One hundred thirty-three patients underwent the periareolar technique, 72 patients underwent the peritumoral technique, and 36 patients were excluded from the analysis. Internal mammary drainage was seen in 24 of 133 (18.0%) patients, of which 12 (9%) were seen only in the internal mammary chain. This is much higher than previous studies quoting 0.0% to 4.3% and is similar to previously reported rates using the peritumoral technique. CONCLUSIONS:Our periareolar injection technique using Tc-99m antimony sulfur colloid is able to detect internal mammary lymph nodes in at least 18.0% of patients.
    背景与目标: 目的:乳晕下和乳晕周围注射技术与肿瘤周围技术相比,具有更高的检出率,并且不需要将肿瘤定位在无法触及的病变中。然而,主要的批评之一是被广泛报道的无法检测内部乳腺淋巴结。这与我们使用Tc-99m锑硫胶体的临床经验形成对比,在该实验中,通常会看到内部乳腺淋巴结。
    方法:回顾性分析了241例患者,历时38个月,以探讨我们乳晕周围注射技术在乳腺癌前哨淋巴结显像术中检测内部乳腺淋巴结引流的能力。在手术当天进行四次5至10 MBq(0.14-0.27 mCi)Tc-99m锑硫胶体注射,然后进行按摩和成像。将放射性同位素悬浮在0.5 mL气闸中的0.1 mL中。每次注射都是用25号针在1.1至1.3厘米深度下进行2秒钟。无法检索记录或除了乳晕周围或肿瘤周围进行了注射技术的患者均从分析中剔除。
    结果:133例患者接受了乳晕治疗,72例患者接受了肿瘤周围治疗,36例患者被排除在分析之外。 133例患者中有24例(18.0%)出现了内部乳腺引流,其中12例(9%)仅见于内部乳腺链。这比以前的研究(引用0.0%至4.3%)要高得多,并且与先前报道的使用肿瘤周围技术的比率相似。
    结论:我们使用Tc-99m锑硫胶体的乳晕周围注射技术能够检测至少18.0%的患者的内部乳腺淋巴结。
  • 【激素难治性乳腺癌的治疗:植入小鼠体内的人类肿瘤的凋亡和消退。】 复制标题 收藏 收藏
    DOI:10.1158/1535-7163.MCT-06-0205 复制DOI
    作者列表:Aneja R,Zhou J,Zhou B,Chandra R,Joshi HC
    BACKGROUND & AIMS: :Following surgery, the hormone dependence of breast tumors is exploited for therapy using antagonists such as tamoxifen, although occasional hormone-resistant clones do appear. Another chemotherapeutic strategy uses microtubule inhibitors such as taxanes. Unfortunately, these agents elicit toxicities such as leukocytopenia, diarrhea, alopecia, and peripheral neuropathies and are also associated with the emergence of drug resistance. We have previously described a tubulin-binding, natural compound, noscapine, that was nontoxic and triggered apoptosis in many cancer types albeit at 10 mumol/L or higher concentrations depending on the cell type. We now show that a synthetic analogue of noscapine, 9-bromonoscapine, is approximately 10-fold to 15-fold more potent than noscapine in inhibiting cell proliferation and induces apoptosis following G2-M arrest in hormone-insensitive human breast cancers (MDA-MB-231). Furthermore, a clear loss of mitochondrial membrane potential, release of cytochrome c, activation of the terminal caspase-3, and the cleavage of its substrates such as poly(ADP-ribose) polymerase, suggest an intrinsic apoptotic mechanism. Taken together, these data point to a mitochondrially mediated apoptosis of hormone-insensitive breast cancer cells. Human tumor xenografts in nude mice showed significant tumor volume reduction and a surprising increase in longevity without signs of obvious toxicity. Thus, our data provide compelling evidence that 9-bromonoscapine can be useful for the therapy of hormone-refractory breast cancer.
    背景与目标: :手术后,尽管偶尔出现激素抵抗性克隆,但利用他莫昔芬等拮抗剂开发了乳腺肿瘤的激素依赖性疗法。另一种化学治疗策略是使用微管抑制剂,例如紫杉烷类。不幸的是,这些药物引起毒性,例如白细胞减少,腹泻,脱发和周围神经病,并且还与耐药性的出现有关。先前我们已经描述了微管蛋白结合的天然化合物Noscapine,尽管在10μmol/ L或更高的浓度(取决于细胞类型)下,但在许多类型的癌症中均无毒并引发细胞凋亡。我们现在显示,Noscapine的合成类似物9-bromonoscapine在抑制细胞增殖方面比Noscapine的效力高约10倍至15倍,并在激素不敏感的人类乳腺癌(MDA-MB)中引起G2-M阻滞后诱导凋亡-231)。此外,线粒体膜电位的明显损失,细胞色素c的释放,末端caspase-3的活化以及其底物(如聚(ADP-核糖)聚合酶)的裂解表明了内在的凋亡机制。综上所述,这些数据表明了激素不敏感的乳腺癌细胞由线粒体介导的凋亡。裸鼠中的人类肿瘤异种移植物显示出明显的肿瘤体积减少和寿命的惊人增加,而没有明显的毒性迹象。因此,我们的数据提供了令人信服的证据,表明9-溴莫可可碱可用于治疗激素难治性乳腺癌。
  • 【流行的乳腺癌局部治疗方案对受控临床试验以外的生存的影响:印度北部一家专业乳腺部门的经验。】 复制标题 收藏 收藏
    DOI:10.1007/s00268-006-0037-1 复制DOI
    作者列表:Tewari M,Pradhan S,Kumar M,Shukla HS
    BACKGROUND & AIMS: BACKGROUND:This study aimed at analyzing different treatments of breast cancer (BC) prevalent in the region, their effect on patients' survival, and discusses the most suitable method within available resources. METHODS:The study was set up at a tertiary care hospital in north India. We retrospectively reviewed data of 473 female BC patients who attended the departments of Surgical Oncology and Radiotherapy from January 1997 to December 1999. Patients with cTNM stage IV and inoperable stage III were included; those who defaulted or were lost to follow-up were excluded. Out of 473 patients, 372 were selected. The selected patients were divided into groups on the basis of place and type of local treatment they received: (1) local excision only, (2) standard breast conservation therapy (BCT), (3) total mastectomy (TM) + axillary lymph node dissection + radiotherapy (RT), and (4) modified radical mastectomy (MRM) + RT. Data regarding recurrence and survival were analyzed in December 2005. Minimum follow-up was 6 years. RESULTS:Overall recurrence rates were significantly higher in patients operated elsewhere (P <0.0001). Of 194 operated at our Breast Unit, 25 (14.6%) of 171 MRM patients and none of 23 BCT had recurrence. Of 178 patients operated elsewhere, 44 (100%), 6 (42.9%), 41 (41%), and 8 (40%) developed recurrence in groups 1, 2, 3, and 4 respectively. Overall survival was significantly better in patients with MRM at our unit versus TM outside (93.6% vs. 80%). CONCLUSIONS:Several types of treatment from improper local excision alone, BCT, TM, to a carefully done MRM are prevalent here. Properly done, MRM yields significant local control with survival benefit and appears to remain the gold standard in management of our BC patients.
    背景与目标: 背景:本研究旨在分析该地区流行的乳腺癌(BC)的不同治疗方法,它们对患者生存的影响,并在可用资源范围内讨论最合适的方法。
    方法:该研究是在印度北部的一家三级保健医院进行的。我们回顾性回顾了1997年1月至1999年12月就诊于外科肿瘤和放射治疗科的473例女性BC患者的数据。那些违约或失去随访的人被排除在外。在473名患者中,选择了372名。根据所接受的局部治疗的位置和类型将选定的患者分为几类:(1)仅局部切除,(2)标准乳房保留疗法(BCT),(3)全乳房切除术(TM)腋窝淋巴结清扫术放射疗法(RT)和(4)改良根治性乳房切除术(MRM)RT。有关复发和生存的数据于2005年12月进行了分析。最低随访时间为6年。
    结果:在其他地方手术的患者的总体复发率显着更高(P <0.0001)。在我们的乳房科进行的194例手术中,171例MRM患者中有25例(占14.6%),而23例BCT均未复发。在178例在其他地方手术的患者中,分别在第1、2、3和4组中复发了44例(100%),6例(42.9%),41例(41%)和8例(40%)复发。我们单位的MRM患者的总生存期明显优于室外TM(93.6%vs. 80%)。
    结论:从单独的不当局部切除,BCT,TM到精心制作的MRM的几种治疗方法在这里很普遍。正确完成后,MRM可以产生明显的局部控制并具有生存获益,并且似乎仍然是我们BC患者治疗的金标准。
  • 【回顾乳腺癌的种族差异。】 复制标题 收藏 收藏
    DOI:10.2217/14622416.7.6.935 复制DOI
    作者列表:Bowen RL,Stebbing J,Jones LJ
    BACKGROUND & AIMS: :Women of African descent have a lower incidence of breast cancer than their white counterparts; however, the overall age-adjusted breast cancer mortality rates are higher. They also present at a younger age, and have more advanced disease that exhibits poor prognostic features including significantly larger tumors of higher grade, higher rates of estrogen receptor and progesterone receptor negativity and a higher rate of p53 mutations and HRAS1 proto-oncogene expression, all of which confer a poor prognosis. While there are many possible contributory factors to the discrepancies in outcome in women of African descent, there is no satisfactory explanation as to why women of African origin tend to present at a younger age with hormone receptor-negative tumors and more adverse prognostic features.
    背景与目标: :非洲裔女性的乳腺癌发病率低于白人女性;但是,按年龄调整的总体乳腺癌死亡率更高。它们也以较年轻的年龄出现,并具有较晚期的疾病,表现出不良的预后特征,包括更高级别的明显更大的肿瘤,更高的雌激素受体和孕激素受体阴性率以及更高的p53突变和HRAS1原癌基因表达率,所有其中预后不良。尽管有许多可能的因素导致非洲人后裔的结果差异,但对于为什么非洲人后裔倾向于在年轻时出现激素受体阴性肿瘤和更不利的预后特征尚无令人满意的解释。
  • 【乳腺良性乳头状肿瘤的超声特征:回顾22例患者。】 复制标题 收藏 收藏
    DOI:10.7863/jum.1997.16.3.161 复制DOI
    作者列表:Yang WT,Suen M,Metreweli C
    BACKGROUND & AIMS: The sonographic features of 22 patients with histologically benign intraductal papillomas are presented, with clinical, mammographic, galactographic, and histopathologic correlation. The most common presenting feature in this series is a palpable central breast mass in an elderly woman. Sonography was abnormal in all 22 patients. The typical sonographic features include a well-defined, smooth-walled, solid, hypoechoic nodule or a lobulated, smooth-walled, cystic lesion with solid components. Dilated ducts are a common feature, often with visible solid intraluminal echoes. These findings suggest the diagnosis of an intraductal papilloma. The differential diagnosis includes fibroadenoma and phyllodes tumor (for large solid lesions) and intracystic carcinoma (for complex cystic lesions). Mammograms are frequently normal (36% of patients). When abnormal, the mammographic features are of a smooth-walled, well-defined mass or increased retroareolar opacity. Contrary to the reported literature, calcification was seen infrequently. We conclude that ultrasonography is useful in the detection and delineation of intraductal papillomas.

    背景与目标: 介绍了22例组织学上良性导管内乳头状瘤患者的超声特征,并与临床,乳房X线照片,乳腺摄影和组织病理学相关。该系列最常见的表现是一名老年妇女的中央乳腺肿块。所有22例患者的超声检查均异常。典型的超声检查特征包括界限分明的,光滑壁的实心低回声结节或具有固体成分的小叶,光滑壁的囊性病变。扩张的导管是常见特征,通常伴有可见的固体腔内回声。这些发现提示导管内乳头状瘤的诊断。鉴别诊断包括纤维腺瘤和叶状肿瘤(对于大的实体病变)和囊内癌(对于复杂的囊性病变)。乳房X线照片通常是正常的(36%的患者)。异常时,乳房X光检查的特征是壁光滑,质量明确或乳晕后不透明性增加。与报道的文献相反,很少见到钙化。我们得出的结论是,超声检查可用于导管内乳头状瘤的检测和勾画。

  • 【放射性碘125种子定位在新辅助化疗后在保乳治疗中的作用。】 复制标题 收藏 收藏
    DOI:10.1093/annonc/mds475 复制DOI
    作者列表:Gobardhan PD,de Wall LL,van der Laan L,ten Tije AJ,van der Meer DC,Tetteroo E,Poortmans PM,Luiten EJ
    BACKGROUND & AIMS: BACKGROUND:Neoadjuvant chemotherapy (NAC) is increasingly used in the framework of breast-conserving therapy (BCT). Localization of the initial tumor is essential to guide surgical resection after NAC. This study describes the results obtained with I-125 seed localization in BCT including NAC. PATIENTS AND METHODS:Between January 2009 and December 2010, 85 patients treated with NAC and BCT after I-125 seed localization were included. Radiological and pathological response and resection margins were retrospectively evaluated. RESULTS:BCT was carried out in 85 patients without secondary local excisions. Nineteen patients with unifocal tumors and seven patients with multifocal tumors showed a complete pathological response (P = 0.18). Tumor-free resection margins were obtained in 78 patients (50 patients with unifocal and 28 patients with multifocal tumors, P = 0.27). Focally involved margins were found in four patients (two patients with a unifocal and two patients with a multifocal tumor, P = 0.27). A subsequent mastectomy was carried out in three patients (two patients with multifocal tumors, P = 0.29). CONCLUSIONS:BCT after NAC can be carried out successfully after initial localization with I-125 seeds in both unifocal and multifocal breast tumors with complete resection rates of >90%.
    背景与目标: 背景:新辅助化疗(NAC)越来越多地用于保乳治疗(BCT)的框架中。初始肿瘤的定位对于NAC术后的手术切除至关重要。这项研究描述了I-125种子在包括NAC的BCT中的定位所获得的结果。
    患者和方法:2009年1月至2010年12月,纳入I-125种子定位后接受NAC和BCT治疗的85例患者。回顾性评估放射学和病理学反应以及切除范围。
    结果:85例患者均进行了BCT检查,未进行次要局部切除。 19例单灶性肿瘤患者和7例多灶性肿瘤患者表现出完全的病理反应(P = 0.18)。 78例患者获得了无肿瘤切除切缘(50例单灶患者和28例多灶肿瘤患者,P = 0.27)。在四名患者中发现了局部受累的切缘(两名单灶患者和两名多灶性肿瘤患者,P = 0.27)。随后在三名患者中进行了乳房切除术(两名患有多灶性肿瘤的患者,P = 0.29)。
    结论:NAC后的BCT可以在单灶和多灶乳腺肿瘤中首次定位I-125种子后成功进行,完全切除率> 90%。
  • 【术中电子加速乳房局部照射:使用GEC-ESTRO建议作为患者选择的指南。】 复制标题 收藏 收藏
    DOI:10.1016/j.radonc.2012.10.018 复制DOI
    作者列表:Leonardi MC,Maisonneuve P,Mastropasqua MG,Morra A,Lazzari R,Dell'Acqua V,Ferrari A,Rotmensz N,Sangalli C,Luini A,Veronesi U,Orecchia R
    BACKGROUND & AIMS: PURPOSE:To evaluate outcomes among early-stage breast cancer patients after conservative surgery and full-dose intraoperative radiotherapy electrons (ELIOT) by applying the Groupe Européen de Curiethérapie-European Society for Therapeutic Radiology and Oncology (GEC-ESTRO) recommendations for partial breast irradiation (APBI). MATERIALS AND METHODS:One-thousand eight-hundred and twenty-two patients were stratified into the three GEC-ESTRO categories of "good candidates", "possible candidates" and "contraindication" in order to assess outcomes. RESULTS:All the 1822 cases except 7 could be classified according to GEC-ESTRO groups: 573 patients met the criteria to be included in the "good candidates" group, 468 patients in the "possible candidates" group and 767 patients in the "contraindication" group. Median and mean follow-up length was 3.5 years (range 0-10.5 years) and 3.8 years (SD 2.2), respectively. The 5-year rate of in-breast tumor reappearances for "good candidates", "possible candidates" and "contraindication" groups were 1.9%, 7.4% and 7.7%, respectively (p 0.001). While the regional node relapse showed no difference, the rate of distant metastases was significantly different in the "contraindication" group compared to the other two categories, having a significant impact on survival. CONCLUSIONS:Among the ELIOT population, the GEC-ESTRO recommendations enabled the selection of the good candidates with a low rate of local recurrence, but failed to differentiate the "possible candidates" and the "contraindication" groups.
    背景与目标: 目的:通过应用欧洲放射治疗和肿瘤学学会(GEC-ESTRO)对部分乳房照射的建议,评估保守手术和全剂量术中放疗电子(ELIOT)后早期乳腺癌患者的结局(APBI)。
    材料与方法:将128例患者分为GEC-ESTRO的“好候选人”,“可能候选人”和“禁忌症”三个类别,以评估结果。
    结果:除7例外,其余1822例均可以根据GEC-ESTRO组进行分类:573例符合“好候选者”组的标准,468例“可能候选”组的患者,767例“禁忌症”的患者“ 团体。中位和平均随访时间分别为3。5年(0-10。5年)和3。8年(SD 2.2)。 “好候选者”,“可能候选者”和“禁忌症”组的5年乳腺肿瘤复发率分别为1.9%,7.4%和7.7%(p 0.001)。尽管区域淋巴结复发无差异,但“禁忌”组中远处转移的发生率与其他两类相比有显着差异,对生存率有显着影响。
    结论:在ELIOT人群中,GEC-ESTRO的建议使得能够选择局部复发率低的良好候选者,但未能区分“可能候选者”和“禁忌症”人群。
  • 【进行乳腺癌手术的妇女使用高级成像技术的趋势。】 复制标题 收藏 收藏
    DOI:10.1002/cncr.27838 复制DOI
    作者列表:Breslin TM,Banerjee M,Gust C,Birkmeyer NJ
    BACKGROUND & AIMS: BACKGROUND:Evidence-based guidelines recommend limited perioperative diagnostic imaging for new breast cancer diagnoses. For patients aged >65 years, conventional imaging use (mammography, plain radiographs, and ultrasound) has remained stable, whereas advanced imaging (computed tomography [CT], nuclear medicine scans [positron emission tomography/bone scans], and magnetic resonance imaging [MRI]) use has increased. In this study, the authors evaluated traditional and advanced imaging use among younger patients (aged ≤ 65 years) undergoing breast cancer surgery. METHODS:The MarketScan Commercial Claims and Encounters Research Database from 2005 through 2008 was analyzed to evaluate the use of conventional and advanced diagnostic imaging associated with surgery for ductal carcinoma in situ (DCIS) or stage I through III invasive breast cancer. RESULTS:The study cohort included 52,202 women (13% with DCIS and 87% with stage I-III breast cancer). The proportion of patients undergoing conventional imaging remained stable, whereas the average number of conventional imaging tests per patient increased from 4.21 tests in 2005 to 4.79 tests per patient in 2008 (P < .0001). For advanced imaging, the proportion of women who underwent imaging increased from 48.8% in 2005 to 68.8% in 2008 (P < .0001), as did the number of tests per patient (from 1.53 tests in 2005 to 1.98 tests in 2008; P < .0001). MRI examinations accounted for nearly all of the increase in advanced imaging. Patients who underwent MRI examinations received significantly more traditional imaging tests compared with to those who did not, indicating that these tests are additive and are not replacing traditional imaging. CONCLUSIONS:The current results demonstrate that the use of perioperative breast MRI has increased among women aged <65 years. Further study is indicated to determine whether the benefits of this procedure justify increased use.
    背景与目标: 背景:基于证据的指南建议对新的乳腺癌进行有限的围手术期诊断成像。对于65岁以上的患者,传统的影像学检查(乳房X线照片,X线平片和超声检查)保持稳定,而高级影像学(计算机断层扫描[CT],核医学扫描[正电子发射断层扫描/骨扫描]和磁共振成像[ MRI])的使用有所增加。在这项研究中,作者评估了接受乳腺癌手术的年轻患者(≤65岁)的传统和高级成像使用情况。
    方法:对2005年至2008年的MarketScan商业索赔和遭遇研究数据库进行了分析,以评估与导管原位癌(DCIS)或I至III期浸润性乳腺癌手术相关的常规和高级诊断成像的使用。
    结果:该研究队列包括52,202名妇女(13%的DCIS患者和87%的I-III期乳腺癌患者)。接受常规影像学检查的患者比例保持稳定,而每名患者的常规影像学检查的平均次数从2005年的4.21次检查增加到2008年的4.79次检查(P <.0001)。对于高级影像学,接受影像学检查的女性比例从2005年的48.8%增加到2008年的68.8%(P <.0001),每位患者的检查次数也从2005年的1.53次增加到2008年的1.98次; P <.0001)。 MRI检查几乎占了高级影像学增长的全部。与未接受MRI检查的患者相比,接受过MRI检查的患者接受的传统成像检查要多得多,这表明这些检查是相加的,不能替代传统成像。
    结论:目前的结果表明,<65岁的女性围手术期乳房MRI的使用有所增加。指示需要进一步研究以确定该程序的益处是否可以证明增加使用的合理性。
  • 【挪威乳腺癌患者术后放疗后的一年疲劳过程-与普通人群相比。】 复制标题 收藏 收藏
    DOI:10.3109/0284186X.2012.742563 复制DOI
    作者列表:Reidunsdatter RJ,Albrektsen G,Hjermstad MJ,Rannestad T,Oldervoll LM,Lundgren S
    BACKGROUND & AIMS: INTRODUCTION:Fatigue after treatment for breast cancer (BC) is common, but poorly understood. We examined the fatigue levels during first year after radiotherapy (RT) according to the extent of RT (local or locoregional), hormonal therapy (HT) and chemotherapy (CT). The impact of comorbidity was also explored. Moreover, we compared fatigue levels in patients with the general population (GenPop) data. MATERIAL AND METHODS:BC patients (n = 250) referred for post-operative RT at St. Olavs Hospital, Trondheim, Norway, were enrolled. Fatigue was measured by the EORTC QLQ-C30-fatigue subscale, ranging from 0 to 100, before RT (baseline), after RT, and at three, six, and 12 months. Clinical and treatment-related factors were recorded at baseline. GenPop data was available from a previous survey (n = 652). Linear mixed models and analysis of covariance were applied. RESULTS:Compliance ranged from 87% to 98%. At baseline, mean value (SD) of fatigue in BC patients was 26.8 (23.4). The level increased during RT (mean change 8.3, 95% CI 5.5-11.1), but declined thereafter and did not differ significantly from pre-treatment levels at subsequent time points. In age-adjusted analyses, locoregional RT accounted for more overall fatigue than local RT (mean difference 6.6, 95% CI 1.2-12.0), but the association was weakened and not statistical significant when adjusting for CT and HT. Similar pattern was seen for CT and HT. The course of fatigue differed significantly by CT (p < 0.001, interaction test). At baseline, fatigue levels were higher in patients with than without CT, but at subsequent time points similar levels were evident, indicating a temporary adverse effect of CT. Comorbidity was significantly associated with increased level of fatigue, independent of other factors (mean difference 8.1, 95% CI 2.2-14.1). BC-patients were not significantly more fatigued than GenPop, except for immediately after ending RT, and then only among those without comorbidity (mean 35.9 vs. 25.8, p < 0.001). CONCLUSION:Comorbidity seems to be a more important determinant for fatigue levels than the cancer treatment.
    背景与目标: 简介:乳腺癌(BC)治疗后的疲劳很普遍,但了解甚少。我们根据放疗(局部或局部),激素治疗(HT)和化学疗法(CT)的程度,检查了放疗(RT)后第一年的疲劳水平。还探讨了合并症的影响。此外,我们将一般人群(GenPop)数据的患者的疲劳水平进行了比较。
    材料与方法:招募了在挪威特隆赫姆的圣奥拉夫斯医院接受手术后放疗的BC患者(n = 250)。疲劳通过EORTC QLQ-C30疲劳分量表进行测量,范围为0至100,RT前(基线),RT后以及3、6和12个月。在基线记录临床和治疗相关因素。 GenPop数据可从以前的调查中获得(n = 652)。应用线性混合模型和协方差分析。
    结果:依从性从87%到98%不等。基线时,BC患者的疲劳平均值(SD)为26.8(23.4)。在放疗期间该水平升高(平均变化8.3,95%CI 5.5-11.1),但此后下降,并且在随后的时间点与治疗前水平无显着差异。在年龄校正的分析中,局部RT比局部RT引起的总体疲劳要多(平均差异6.6,95%CI 1.2-12.0),但是当校正CT和HT时,关联性减弱并且没有统计学意义。 CT和HT观察到相似的模式。 CT的疲劳过程明显不同(p <0.001,相互作用测试)。在基线时,有CT的患者的疲劳水平高于没有CT的患者,但是在随后的时间点,相似的水平也很明显,表明CT的暂时不良反应。与其他因素无关,合并症与疲劳程度增加显着相关(平均差异8.1,95%CI 2.2-14.1)。 BC患者没有比GenPop明显疲劳,除了RT结束后立即缓解,然后才出现在没有合并症的患者中(平均35.9 vs. 25.8,p <0.001)。
    结论:合并症似乎是比癌症治疗更为重要的疲劳程度决定因素。
  • 【上皮干样细胞中增高的脂肪生成赋予乳腺导管原位癌的生存优势。】 复制标题 收藏 收藏
    DOI:10.1038/onc.2012.519 复制DOI
    作者列表:Pandey PR,Xing F,Sharma S,Watabe M,Pai SK,Iiizumi-Gairani M,Fukuda K,Hirota S,Mo YY,Watabe K
    BACKGROUND & AIMS: :Upregulation of lipogenesis is a hallmark of cancer and blocking the lipogenic pathway is known to cause tumor cell death by apoptosis. However, the exact role of lipogenesis in tumor initiation is as yet poorly understood. We examined the expression profile of key lipogenic genes in clinical samples of ductal carcinoma in situ (DCIS) of breast cancer and found that these genes were significantly upregulated in DCIS. We also isolated cancer stem-like cells (CSCs) from DCIS.com cell line using cell surface markers (CS24(-)CD44(+)ESA(+)) and found that this cell population has significantly higher tumor-initiating ability to generate DCIS compared with the non-stem-like population. Furthermore, the CSCs showed significantly higher level of expression of all lipogenic genes than the counterpart population from non-tumorigenic breast cancer cell line, MCF10A. Importantly, ectopic expression of SREBP1, the master regulator of lipogenic genes, in MCF10A significantly enhanced lipogenesis in stem-like cells and promoted cell growth as well as mammosphere formation. Moreover, SREBP1 expression significantly increased the ability of cell survival of CSCs from MCF10AT, another cell line that is capable of generating DCIS, in mouse and in cell culture. These results indicate that upregulation of lipogenesis is a pre-requisite for DCIS formation by endowing the ability of cell survival. We have also shown that resveratrol was capable of blocking the lipogenic gene expression in CSCs and significantly suppressed their ability to generate DCIS in animals, which provides us with a strong rationale to use this agent for chemoprevention against DCIS.
    背景与目标: :脂肪生成的上调是癌症的标志,已知阻断脂肪生成途径会通过凋亡导致肿瘤细胞死亡。然而,尚不清楚脂肪生成在肿瘤起始中的确切作用。我们检查了乳腺导管原位癌(DCIS)临床样品中关键脂肪形成基因的表达谱,发现这些基因在DCIS中显着上调。我们还使用细胞表面标记(CS24(-)CD44()ESA())从DCIS.com细胞系中分离了癌干样细胞(CSCs),发现与该细胞相比,该细胞群具有更高的产生DCIS的肿瘤启动能力与非茎状种群。此外,CSCs显示所有脂肪形成基因的表达水平均高于非致瘤性乳腺癌细胞系MCF10A的对应群体。重要的是,MCF10A中脂生成基因的主要调控因子SREBP1的异位表达显着增强了干细胞样脂质的生成,并促进了细胞的生长以及乳球的形成。此外,SREBP1表达显着提高了来自MCF10AT的CSC细胞的存活能力,MCF10AT是另一种能够在小鼠和细胞培养物中产生DCIS的细胞系。这些结果表明,通过赋予细胞存活能力,脂肪生成的上调是DCIS形成的先决条件。我们还表明,白藜芦醇能够阻断CSC中脂肪基因的表达,并显着抑制其在动物体内生成DCIS的能力,这为我们提供了使用该药物化学预防DCIS的强大理由。
  • 15 New horizons in breast imaging. 复制标题 收藏 收藏

    【乳房成像的新视野。】 复制标题 收藏 收藏
    DOI:10.1016/j.clon.2012.10.002 复制DOI
    作者列表:Kilburn-Toppin F,Barter SJ
    BACKGROUND & AIMS: :The imaging of breast cancer has undergone significant progression in recent years. A multimodality approach is often required, with ongoing developments in mammography, ultrasound, magnetic resonance and nuclear medicine all contributing to breast cancer imaging. Here we review the literature to assess how advances in well-established technologies, such as mammography, have brought added benefits both in terms of diagnostic and practical benefits, as well as allowing the application of derived technologies, such as tomosynthesis and contrast-enhanced mammography. We consider how these newer technologies may fit into clinical practice, both in terms of general population screening as well as use as problem solving tools in specific patient groups, and where the limitations for these may lie. We aim to highlight some of the promising advances in imaging that are still in earlier stages, such as magnetic resonance elastography, as well as reviewing techniques that are already becoming incorporated into clinical practice.
    背景与目标: :近年来,乳腺癌的影像学经历了重大进展。通常需要一种多模态方法,随着乳房X线照片,超声,磁共振和核医学的不断发展,所有这些都有助于乳腺癌的成像。在这里,我们回顾文献以评估诸如乳房X线照相术等成熟技术的进步如何在诊断和实际获益方面带来了额外的好处,以及如何允许诸如断层合成和对比增强的X线照相术等衍生技术的应用。我们从总体人群筛查以及在特定患者群体中用作问题解决工具的角度考虑这些更新技术如何适合临床实践,以及这些方法可能存在的局限性。我们的目标是突出显示仍处于早期阶段的一些有希望的成像进展,例如磁共振弹性成像以及已经纳入临床实践的检查技术。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录