Preoperative breast MRI in early-stage breast cancer

Rapid uptake of new imaging technology is a major contributor to rising healthcare costs. Preoperative breast magnetic resonance imaging (MRI) for patients with early-stage breast cancer has dramatically increased in use without the evidence of improved outcomes compared to standard assessment and is associated with higher rates of mastectomy. A decision analytic model was developed to evaluate the impact of adding breast MRI to the preoperative evaluation of women with early-stage breast cancer who were candidates for breast-conserving therapy on patient outcomes measured in quality-adjusted life years (QALYs). Model inputs, including survival, recurrence rates, and health utilities, were obtained from a comprehensive literature review. One-way sensitivity analyses were performed to estimate threshold values for key parameters at which adding MRI would become the optimal imaging strategy over standard assessment. Preoperative MRI resulted in 17.77 QALYs compared to 17.86 QALYs with standard assessment, a decrease of 0.09 QALYs or 34?days. In sensitivity analyses, standard assessment was associated with better patient outcomes than preoperative breast MRI across all plausible probabilities for mastectomy, local recurrence, and health utilities. For routine preoperative breast MRI to become the optimal strategy, the conversion rate to mastectomy after preoperative MRI would need to be <1?% (versus the range of 3.6-33?% reported in the literature). Routine preoperative breast MRI appears to confer no advantage over the standard diagnostic evaluations for early-stage breast cancer and may lead to worse patient outcomes.     

Glycolytic enzymes in breast cancer, benign breast disease and normal breast tissue

The activities of hexokinase, phosphofructokinase, aldolase, enolase and pyruvate kinase were studied in breast cancer tissues, in comparison to benign breast disease and normal breast tissues. The enzyme activities in breast cancer were significantly increased compared to normal and benign breast tissues (p less than 0.001). Also the increase in activity in benign disease compared to normal was statistically significant (p less than 0.001). Within the group of benign diseases, fibroadenomas could be distinguished from fibrocystic disease, the former generally showing higher activities compared to the latter (p less than or equal to 0.05). Carcinoma subgroups, classified according to their histology, could not be recognized enzymologically. In addition, isozyme composition of pyruvate kinase and enolase was studied. We did not find a significant shift towards K type pyruvate kinase expression in benign disease compared to normal breast tissues. Also fibroadenomas did not differ from fibrocystic disease. However, the amount of K type pyruvate kinase in carcinomas proved to be significantly higher in comparison to benign disease and normal breast tissues (p less than 0.001). Expression of alpha gamma-enolase in normal breast tissue was virtually absent. In benign disease only a minority of specimens did show the hybrid alpha gamma-enolase. Nearly all carcinomas had alpha gamma-enolase expression and in 20% of the carcinomas gamma gamma-enolase could be detected (so-called neuron-specific enolase). By discriminant analysis, the function giving the best discrimination compared to the histological data was based on natural logarithm aldolase and the total of gamma-enolase subunits. Contrary to expectation, the regulator enzymes of glycolysis; i.e., hexokinase, phosphofructokinase and pyruvate kinase were not included in this discriminant function. The best fit produced a 90% correct classification in both benign and malignant disease. If these findings are confirmed to a larger series, the discrimination is sufficiently strong to form the basis of a clinically useful tool.     

倒T形切口缩乳术在乳房肥大或合并乳腺癌患者中的应用

目的探讨倒T形切口缩乳术在乳房肥大患者，特别是合并乳腺癌的患者手术中的应用及其临床意义。 方法本回顾性研究共纳入2007年10月到2017年10月分别在同济大学附属东方医院及附属同济医院乳腺外科行缩乳术的39例乳房肥大女性患者，均采用倒T形切口(内侧蒂25例，垂直蒂5例，外侧蒂9例)。其中，包括18例符合保留乳房手术指征的乳腺癌患者(内侧蒂10例，垂直蒂4例，外侧蒂4例)。术后6、12个月评价美容效果(乳腺癌患者待放射治疗结束后进行评价)。评估患者的术后并发症、满意度以及复发转移情况。 结果39例患者术后乳房外形自然、对称，明显缩小上提，乳头、乳晕血供和感觉良好，瘢痕不明显，患者满意度高。1例术后2周出现一侧乳房的乳头乳晕区坏死，经过清创换药后愈合。5例术后双侧乳头乳晕感觉减退，其中4例在术后6个月左右恢复正常感觉，1例在术后12个月恢复。5例出现术后局部乳房组织硬结，其中3例为接受过放射治疗的乳腺癌患者，二次手术切除硬结后无再次发生。3例出现瘢痕处猫耳畸形，再次局部麻醉手术修整后效果良好，3例瘢痕增粗，其余患者瘢痕正常。乳腺癌患者中有3例出现放射治疗后患侧乳房皮肤水肿，术后12个月消退。术后6个月进行了美容效果评价，极好25例，良好10例，中等4例，差0例(18例乳腺癌患者中，极好9例，良好6例，中等3例，差0例)。术后12个月的美容效果评价显示：极好25例，良好13例，中等1例，差0例(18例乳腺癌患者中，极好9例，良好8例，中等1例，差0例)。随访时间最长的1例患者(双侧乳房单纯性重度肥大)术后观察了10年，乳房外形无明显变化。全部患者术后随访15～120个月，中位随访61个月，18例乳腺癌患者均无局部复发转移。 结论对于乳房肥大，特别是合并乳腺癌的患者，采用倒T形切口缩乳术，既可切除病变，又可缩小并悬吊乳房。     

保乳术和延迟即刻再造术对乳腺癌患者生活质量的影响

目的探讨保乳术和延迟即刻再造术对乳腺癌患者手术后生活质量(QOL)的影响。方法选取2010年1月至2015年6月北京协和医院行保乳术和延迟即刻再造术后于2016年3月至2016年4月在医院乳腺外科门诊随访的64例患者,其中保乳手术30例(保乳组),延迟即刻再造术34例(乳房再造组)。应用肿瘤治疗功能评价系统(FACT-B)量表对两组患者进行生活质量测评比较。结果两组患者生理状况、社会/家庭状况、情感状况、功能状况、总体生活质量评价FACT-G和FACT-B条目状况比较,差异无统计学意义(P>0.05);乳房再造组患者附加关注(乳腺癌特异模块)方面QOL优于保乳术组,差异有统计学意义(29.37±2.72vs 24.05±7.01,P<0.05)。结论乳腺癌保乳术和延迟即刻再造术后患者生活质量无明显差异。     

早期乳腺癌保乳手术后加速部分乳腺照射与全乳照射剂量学的比较

目的比较早期乳腺癌患者保乳手术后加速部分乳腺照射(APBI)与全乳照射(WBI)剂量学的差异。方法选取2013年1月至2013年12月间收治的26例保乳术后采用APBI治疗的乳腺癌患者作为观察组,另选取同期保乳术后采用WBI治疗的28例乳腺癌患者作为对照组。采用剂量体积直方图(DVH)比较两组患者剂量学差异,总结两组患者的短期疗效;比较观察组患者在有无图像指导下的位移差异。结果观察组患者的平均剂量(Dmean)、照射体积百分比(V103、V105、V110)和靶区剂量不均匀指数(IHI)均显著低于对照组,各项危及器官(OARS)照射剂量均显著低于对照组,且心脏和肺的照射体积也显著低于对照组,差异均有统计学意义(均P<0.05)。观察组患者美容满意率为96.2%(25/26),对照组患者为67.9%(19/28),两组间差异有统计学意义(P<0.05)。观察组患者在有无图像引导下的位移差异均有统计学意义(均P<0.05)。结论早期乳腺癌患者保乳手术后APBI照射剂量低于WBI,改善靶区剂量分布,降低心肺等组织高剂量受照体积,结合图像引导,可以增加准确性。     

保留乳房天然结构的乳腺癌改良根治术后即刻乳房成形术的临床应用

目的探讨保留乳房天然结构的乳腺癌改良根治术后即刻自体组织乳房成形术在临床中的运用价值。方法乳腺癌患者12例,其中DCIS 6例,浸润性导管癌3例,小管癌1例,髓样癌1例,黏液癌1例;保留乳房皮肤的乳腺癌改良根治术9例,保留乳头乳晕复合体的乳腺癌改良根治术3例。全组均保留或重建乳房下皱襞,切除乳腺组织和腋窝淋巴结,应用下腹部横行腹直肌肌皮瓣或背阔肌肌皮瓣即刻乳房成形。结果横行腹直肌肌皮瓣乳房成形术3例,背阔肌肌皮瓣乳房成形术9例,术后皮瓣均存活,皮瓣血管通畅,成形乳房外观良好。结论对早期乳腺癌患者行保留乳房天然结构的乳腺癌改良根治术后即刻自体组织乳房成形,切口隐蔽,成形乳房形态效果良好,可以获得较好的美容效果。     

Controversies in breast conservation treatment for breast cancer

Breast conservation treatment has become the standard treatment for early breast cancer patients, after the equivalence of mastectomy and breast conservation treatment was demonstrated in prospective, randomized trials and large retrospective studies. New questions, such as the feasibility of neoadjuvant chemotherapy in improving breast conserving rate, the appropriateness of breast conservation treatment in ductal carcinoma in situ, the effectiveness of radiation therapy in patients treated by breast conservation, and patient selection for breast conservation without radiation, are now being raised. Future work that needs to be done to answer these questions is discussed in this review.     

Prostate specific antigen in breast cancer,benign breast disease and normal breast tissue

Prostate specific antigen (PSA) is a tumor marker used widely for the diagnosis and monitoring of prostatic adenocarcinoma. Recently, we provided evidence that PSA may also be produced by breast tumors. In this report we examined quantitatively the PSA levels in 199 breast tumors, 48 tissues with benign breast disease (BBD, 34 fibroadenomas), and 36 normal breast tissues. Significant amounts of PSA (≥ 0.030 ng of PSA per mg of total protein) were found in 28% of breast tumors, 65% of BBD tissues, and 33% of normal breast tissues. PSA positivity in breast tumors was highest in stage I disease (34%) and decreased with disease stage (24% in stage II and 18% in stage III–IV). Using polymerase chain reaction amplification we have shown PSA mRNA presence in patients with PSA protein-positive tissues (benign and malignant) but not in patients with PSA protein-negative tissues. Our data suggest that PSA is expressed frequently by normal breast tissue, by tissue of benign breast diseases, and by breast cancer tissue. Highest expression is seen in benign breast disease and lowest expression in advanced stage cancerous tissue. As PSA production is mediated by steroid hormones and their receptors, we propose that PSA may be a new marker of steroid hormone action in the normal or diseased female breast. The role of this enzyme in the development of breast diseases including breast cancer is currently unknown.     

Results of breast conserving treatment of breast cancer

Between 1978 and 1985, 247 patients with primary breast cancer have been treated with breast conserving surgery and external beam radiotherapy. Median follow-up is 3 years and 9 months. Actuarial 5-year disease-free survival for the whole group is 72%; 16 patients (6.8%) have relapsed in the breast to date. Of these, 6 (38%) have died from breast cancer. Patients who have experienced a local recurrence have significantly worse survival than those who remain locally recurrence-free (p less than 0.001). Complication data are presented and shown to be almost entirely mild to moderate and in the range 1-19%. This series shows the breast conserving approach to be effective and at least equivalent to breast ablative procedures in early follow-up.     

Recurrence of breast carcinoma after breast conserving treatment

Clinicopathologic data were analysed of 15 patients with recurrence of carcinoma after breast conserving treatment and who underwent salvage mastectomy with curative intent. Twelve recurred in the same site as the original tumor after an average interval of 29 months; the remaining three arose elsewhere in the breast after an average, 83 months. Ten patients presented with palpable lumps, one with Paget's disease of the nipple and four with mammographical microcalcifications. Thirteen patients are alive without evidence of disease (mean follow-up 20 months), one patient died of chest wall recurrence 10 months after mastectomy and one is alive with metastatic disease 9 months after mastectomy. Extensive ductal carcinoma in situ, which was found in 53% of the initial excisions in this series, may be associated with a high risk of local recurrence.     

早期乳腺癌部分乳腺加速放疗

随着乳腺癌术后复发模式的研究进展,部分乳腺照射方法 成为乳腺癌放疗的热点.组织间插植、球囊近距离治疗、术中放疗及三维适形放疗和调强放疗等部分乳腺加速放疗已进入临床研究.其局部控制率和安全性与全乳腺照射比较相当,同时具有治疗周期短、方便患者等优势.部分乳腺加速放疗在部分患者有望代替全乳腺放疗,成为早期乳腺癌保乳术后放疗的标准治疗之一.

Abstract：

With a view to patterns of local recurrence after breast conserving surgery, whole breast irradiation(WBI) after surgery is controversial and partial-breast irradiation(PBI) came up. Many clinical trials related with accelerated partial-breast irradiation using a variety of radiotherapeutic techniques such as interstitial brachytherapy (IBT), MammoSite Radiation Therapy System, intraoperative radiotherapy(IORT), threedimensional conformal radiotherapy(3-DCRT)and intensity modulated radiation therapy(IMRT) in selected patients have been carried out. Accelerated partial-breast irradiation that provides faster, more convenient treat-ment demonstrates local control rate and safety comparable to that of whole breast irradiation. Partial breast irradiation may be an alternative way to whole breast radiotherapy and will be one of the standard treatments in women with early breast cancer seeking breast conservation.     

乳腺癌术后一期乳房再造

背景与目的：乳房再造使乳腺癌全乳切除患者重获完整的乳房外形。本文介绍乳腺癌术后应用带蒂背阔肌肌皮瓣联合或不联合假体和带蒂横向腹直肌肌皮瓣（TRAM）行一期乳房再造的经验，并探讨适合中国乳腺癌患者的乳房再造方式。方法：2000年1月-2005年7月，74例乳腺癌患者乳房切除后，应用背阔肌肌皮瓣或带蒂TRAM行一期乳房再造。结果：再造手术均取得成功，背阔肌肌皮瓣再造62例（83．8％），其中联合假体13例、带蒂TRAM再造12例、联合假体1例。经过2～66个月随访，局部区域复发率4．1％。患者满意度高，可接受度96％。而且这两种自体再造方式在是否需要联合假体上没有差别（P=0．440）。结论：乳腺癌术后一期乳房再造能同时满足肿瘤治疗和形体美容的要求，提高患者生活质量，背阔肌肌皮瓣再造对中国女性适用性好，值得推广。     

Delayed breast cellulitis following breast conserving operation.

A complication of breast conservation, which has been increasingly reported in the literature, is 'delayed cellulitis' in the treated breast. This is to be distinguished from wound infection in the breast following lumpectomy. This study reports 16 cases diagnosed with delayed cellulitis following breast conserving surgery, unresponsive to antibiotic therapy. Diagnostic criteria included: pain, erythema and edema in the operated breast. Symptoms appeared up to 10 months after surgery and time to resolution was seven and a half months. No patients had positive cytology and bacteriology tests were negative. Thirteen patients were observed, and three patients were treated with antibiotics with no apparent immediate effect. The appearance of breast cellulitis after surgery poses a problematic diagnostic and management dilemma. It is important to distinguish between this entity and infection, or inflammatory carcinoma. The picture may be attributed to impairment or occlusion of the lymphatic circulation in the breast. This seems to be a newly defined complication with an incidence of 3-5%.     

早期乳腺癌保乳术后部分乳腺照射的现状

乳腺癌的治疗经历了从大手术到小手术以尽量保存功能的过程。从全乳腺切除加腋窝淋巴结清扫术,到乳腺肿瘤区段切除加腋窝、前哨淋巴结活检术。手术的转变影响到放射治疗的应用。例如,一位早期乳腺癌患者,若行全乳腺切除和腋窝淋巴结清扫术,如果腋窝淋巴结阴性,就不需要进行放射治疗;若行乳腺肿瘤区段切除术,     

Mutations in normal breast tissue and breast tumours

The accumulation of mutations is a feature of all normal cells. The probability of any individual gene in any cell acquiring a mutation is, however, low. Cancer is therefore a rare disease in comparison with the number of susceptible cells. Mutations in normal tissue are stochastic, vary widely among cells and are therefore difficult to detect using standard methods because each change is so rare. If, however, a tissue such as the breast undergoes considerable clonal expansion, particularly if relatively late in life, normal tissue may have accumulated many thousands of detectable mutations. Since breast cancers are clonal and have almost certainly undergone many more cell divisions than normal cells, each tumour may have many millions of mutations, most of which are entirely innocent and some of which have accumulated in the cell of origin prior to tumorigenesis. Despite some claims to the contrary, even at normal mutation rates, clonal expansion within a tumour is quite sufficient to account for the mutations of five or six genes that are generally supposed necessary for carcinogenesis to occur. Hypermutability does, however, contribute to the pathogenesis of many cancers and, although evidence is indirect in breast cancer, may take forms such as karyotypic instability via centrosome amplification.     

Interval breast cancer risk associations with breast density,family history and breast tissue aging

Interval breast cancers (those diagnosed between recommended mammography screens) generally have poorer outcomes and are more common among women with dense breasts. We aimed to develop a risk model for interval breast cancer. We conducted a nested case–control study within the Melbourne Collaborative Cohort Study involving 168 interval breast cancer patients and 498 matched control subjects. We measured breast density using the CUMULUS software. We recorded first-degree family history by questionnaire, measured body mass index (BMI) and calculated age-adjusted breast tissue aging, a novel measure of exposure to estrogen and progesterone based on the Pike model. We fitted conditional logistic regression to estimate odds ratio (OR) or odds ratio per adjusted standard deviation (OPERA) and calculated the area under the receiver operating characteristic curve (AUC). The stronger risk associations were for unadjusted percent breast density (OPERA = 1.99; AUC = 0.66), more so after adjusting for age and BMI (OPERA = 2.26; AUC = 0.70), and for family history (OR = 2.70; AUC = 0.56). When the latter two factors and their multiplicative interactions with age-adjusted breast tissue aging (p = 0.01 and 0.02, respectively) were fitted, the AUC was 0.73 (95% CI 0.69–0.77), equivalent to a ninefold interquartile risk ratio. In summary, compared with using dense breasts alone, risk discrimination for interval breast cancers could be doubled by instead using breast density, BMI, family history and hormonal exposure. This would also give women with dense breasts, and their physicians, more information about the major consequence of having dense breasts—an increased risk of developing an interval breast cancer.     

乳腺癌保乳术后全乳野中野适形调强放射治疗技术

目的：探讨乳腺癌保乳术后全乳野中野适形调强照射技术方法,并与常规全乳切线野照射技术进行剂量学对比。方法：选取22例早期乳腺癌保乳术后患者在CT模拟机下对乳腺部位行薄层定位扫描,将定位图像传输至治疗计划系统进行全乳野中野计划设计：在全乳两切线适形野的基础上挡去高剂量区部分,另设计2—4个小跳数射野以降低靶区最高剂量和调整高剂量区的范围及所在位置。处方剂量50Gy／25次,要求95％的靶区接受处方剂量;然后利用其CT模拟定位资料按照常规切线野射野方法在治疗计划上模拟常规切线野治疗计划,对野中野计划和常规射野计划进行靶区适形性、靶区均匀性和危及器官受量的比较。结果：野中野适形调强放射治疗技术的适形度、均匀性优于常规切线野照射,靶区内超过110％处方剂量的体积明显小于常规切线野技术。减少了肺组织V20的体积,降低了心脏的平均剂量和受照体积。结论：乳腺癌保乳术后全乳野中野适形调强放射治疗技术是一种有益的全乳照射技术。