Conservative Treatment Of Breast Cancer Research Articles

Minimising unnecessary mastectomies in a predominantly Chinese community.

Background. Recent data shows that the use of breast conservation treatment (BCT) for breast cancer may result in superior outcomes when compared with mastectomy. However, reported rates of BCT in predominantly Chinese populations are significantly lower than those reported in Western countries. Low BCT rates may now be a concern as they may translate into suboptimal outcomes. A study was undertaken to evaluate BCT rates in a cohort of predominantly Chinese women. Methods. All patients who underwent surgery on the breast at the authors' healthcare facility between October 2008 and December 2011 were included in the study and outcomes of treatment were evaluated. Results. A total of 171 patients were analysed. Two-thirds of the patients were of Chinese ethnicity. One hundred and fifty-six (85.9%) underwent BCT. Ninety-eight of 114 Chinese women (86%) underwent BCT. There was no difference in the proportion of women undergoing BCT based on ethnicity. After a median of 49 months of follow-up, three patients (1.8%) had local recurrence and 5 patients (2.9%) suffered distant metastasis. Four patients (2.3%) have died from their disease. Conclusion. BCT rates exceeding 80% in a predominantly Chinese population are possible with acceptable local and distant control rates, thereby minimising unnecessary mastectomies.

Perspectives of Cosmesis following Breast Conservation for Multifocal and Multicentric Breast Cancers.

Background. Contemporary data suggest that breast conservation treatment (BCT) for multifocal and multicentric breast cancer (MFMCBC) may be appropriate with noninferior local control rates. However, there is a paucity of data to evaluate patient's satisfaction with cosmetic outcomes after BCT for MFMCBC. This study was performed to bridge this information gap. Methods. All patients treated at the authors' healthcare facility were included in the study. Patients with MFMCBC who were assessed to be eligible for BCT underwent tumour resection using standard surgical techniques with direct parenchymal closure through a single incision. After at least three years of follow-up, they were invited to participate in a survey regarding their cosmetic outcomes. Results. Of a total of 160 patients, 40 had MFMCBC, of whom 34 (85%) underwent successful BCT. Five-year cancer-specific survival and disease-free survival were 95.7%. Twenty of the 34 patients responded to the survey. No patient rated her cosmetic outcome as “poor.” Analysis indicated low agreement between patients' self-assessment and clinician-directed evaluation of aesthetic results. Conclusion. BCT for MFMCBC is feasible with acceptable survival and cosmetic outcomes. However, there appears to be a disparity between patient and clinician-directed evaluation of cosmetic results which warrant further research.

Cosmetic evaluation methods adapted to asian patients after breast-conserving surgery and examination of the necessarily elements for cosmetic evaluation.

PurposeAlthough various strategies have been reported, there are no defined criteria for cosmetic evaluation methods after breast-conserving surgery (BCS). Since Asians tend to have smaller breasts, indistinct inframammary folds, and conspicuous scars, differences in the cosmetic results are expected. So we examined two subjective methods and one objective method to determine the differences, and elements necessary for a cosmetic evaluation after BCS.MethodsFrontal photographs of 190 Japanese were evaluated using the Harris scale (Harris) and the evaluation method proposed by the Japanese Breast Cancer Society Sawai group (Sawai group) as the subjective methods, and the Breast Cancer Conservation Treatment cosmetic results (BCCT.core) as the objective method, respectively. In order to examine the necessary elements for developing a new ideal method, 100 out of 190 were selected and assessed separately by six raters using both the Harris and modified Sawai group methods in the observer assessment. The correlation between the two methods was examined using the Spearman rank-correlation coefficient.ResultsThe results of the BCCT.core and the other two methods were clearly different. In the observer assessment, the consensuses of the six raters were evaluated as follows: 27, 27, 26, and 20 cases were evaluated as "excellent," "good," "fair," and "poor," respectively. For the Spearman rank-correlation coefficient, values higher than 0.7 indicated a strong correlation, as seen by the values of 0.909 for the breast shape and 0.345 for the scar. The breast shape accounted for the most significant part of the evaluation, and the scar had very little correlation.ConclusionIn this study, we recognized a clear difference between the subjective and objective evaluation methods, and identified the necessary elements for cosmetic evaluation. We would like to continue developing an ideal cosmetic evaluation that is similar to subjective one and is independent from raters.

Intraoperative radiation therapy with electrons in breast cancer conservative treatment: Our experience

Radiotherapy plays a central role in the local control of breast cancer following conservative surgery, representing the standard treatment for patients undergoing quadrantectomy or lumpectomy and consisting in 5 or 6 weeks of treatment with a total dose of 45–50 Gy.In the last ten years new trends in radiation therapy have been developing with a new planning of duration and extension of breast tissue to irradiate.Moreover some authors presented the idea of combining the use of intraoperatory radiotherapy with the partial breast irradiation, with the aim of irradiate the breast in a single session during breast conserving surgery.From September 2009 to July 2010 we prospectively enrolled 13 patients to undergo electron beam intraoperative radiotherapy after breast conservative treatment for early breast cancer.At a mean follow-up of 46 months no local recurrences have been described and no patients presented distant metastasis or died for any cause. 6 patients (46.2%) presented complications, as fibrosis and liponecrosis.Our results suggest that electron beam intraoperative radiotherapy in the conservative treatment of breast cancer could be considered a suitable option for low risk patients, even if our sample is very small and we need longer follow-up to draw conclusive results.

Breast conserving treatment for breast cancer: dosimetric comparison of sequential versus simultaneous integrated photon boost.

Background. Breast conserving surgery followed by whole breast irradiation is widely accepted as standard of care for early breast cancer. Addition of a boost dose to the initial tumor area further reduces local recurrences. We investigated the dosimetric benefits of a simultaneously integrated boost (SIB) compared to a sequential boost to hypofractionate the boost volume, while maintaining normofractionation on the breast. Methods. For 10 patients 4 treatment plans were deployed, 1 with a sequential photon boost, and 3 with different SIB techniques: on a conventional linear accelerator, helical TomoTherapy, and static TomoDirect. Dosimetric comparison was performed. Results. PTV-coverage was good in all techniques. Conformity was better with all SIB techniques compared to sequential boost (P = 0.0001). There was less dose spilling to the ipsilateral breast outside the PTVboost (P = 0.04). The dose to the organs at risk (OAR) was not influenced by SIB compared to sequential boost. Helical TomoTherapy showed a higher mean dose to the contralateral breast, but less than 5 Gy for each patient. Conclusions. SIB showed less dose spilling within the breast and equal dose to OAR compared to sequential boost. Both helical TomoTherapy and the conventional technique delivered acceptable dosimetry. SIB seems a safe alternative and can be implemented in clinical routine.

The use of an interstitial boost in the conservative treatment of breast cancer: how to perform it routinely in a radiotherapy department

PurposeTo demonstrate the utility of a boost with interstitial brachytherapy (BT) in breast-conserving therapy (BCT) by doing a thorough review of the literature and describing in detail our technique for delivering this boost.Material and methodsOur department has been delivering the boost with interstitial BT since 1989, in most cases with rigid needles and a theoretical dosimetry. In the early years, we used low-dose-rate (LDR) with iridium-192 wires. The dose administered was 15 Gy if there were no risk factors for local relapse or 20-25 Gy in the presence of risk factors. The risk factors considered were the presence of a close margin (less than 10 mm) and an extensive intraductal component (more than 25%). After 2002, we switched to high-dose-rate (HDR); using the linear quadratic model we changed the low dose to 3 fractions of 4.5 Gy in the case of no risk factors for local relapse or to 3 fractions of 5 Gy in the presence of risk factors.ResultsIn 79 consecutive boost patients treated in our department between 2010 and 2011, with a median follow-up of 46 months, the local control rate was 97.47%. With respect to cosmesis, fibrosis occurred in 17 cases (21.5%) and hyperpigmentation in 26 cases (32.9%). Our hospital's results are comparable in terms of local control and cosmesis to those of other authors.ConclusionsThis educational article describes our department's boost technique with rigid needles and comments briefly on our results using this technique in a group of consecutively treated patients in our department. A review of the literature and the published results on local control and cosmesis is also described.

乳房温存療法後に発生した放射線誘発血管肉腫の1例

乳房温存療法後に発生した放射線誘発血管肉腫の1例

The Additional Irradiation of the Tumor Bed "The Boost" in the Breast Cancer Conservative Treatment: What Techniques?

The Additional Irradiation of the Tumor Bed "The Boost" in the Breast Cancer Conservative Treatment: What Techniques?

A 3D low-cost solution for the aesthetic evaluation of breast cancer conservative treatment

Breast cancer conservative treatment (BCCT) is now the preferred technique for breast cancer treatment. The limited reproducibility of standard aesthetic evaluation methods led to the development of objective methods, such as the software tool Breast Cancer Conservative Treatment.cosmetic results (BCCT.core). Although results are satisfying, there are still limitations concerning complete automation and the inability to measure volumetric information. With the fundamental premise of maintaining the system a low-cost tool, this work studies the incorporation of the Microsoft Kinect sensor in BCCT evaluations. The aim is to enable the automatic joint detection of prominent points, both on depth and RGB images. Afterwards, using those prominent points, it is possible to obtain two-dimensional and volumetric features. Finally, the aesthetic result is achieved using machine learning techniques converted automatically from the set of measures defined. Experimental results show that the proposed algorithm is accurate and robust for a wide number of patients. In addition, comparing with previous research, the procedure for detecting prominent points was automated.

Hypofractionated radiotherapy in the conservative treatment of breast cancer

Hypofractionated radiotherapy in the conservative treatment of breast cancer

Methods for the Aesthetic Evaluation of Breast Cancer Conservation Treatment: A Technological Review

Breast-conserving approaches aim to attain better aesthetic results in addition to local control and achieving survival rates equivalent to mastectomy in patients with breast cancer. While the oncologic outcome of breast conserva- tion procedures is easily estimated objectively by disease-free and overall survival rates, the cosmetic outcome has no standard of evaluation. Although breast conservation techniques have been widely studied, different forms of evaluation and heterogeneous working practices have contributed to different aesthetic results. As this scenario suggests, the evalua- tion of aesthetic results should be mandatory in any institution performing breast cancer treatment, contributing to the im- provement of current strategies by enabling the identification of variables which have a significant impact on the final aes- thetic result. In the process of assessing cosmetic outcomes there are several important issues that should be considered: which factors have a crucial impact on the cosmetic outcome of Breast Cancer Conservation Treatment (BCCT); which parameters or features should be evaluated in the cosmetic assessment of BCCT; how patients are evaluated; which scales are used in this evaluation; which methods and technological solutions are available for the evaluation of cosmetic results of BCCT. In this paper we try to discuss all these questions, with an emphasis on the objective methods and corresponding tech- nologies used in the aesthetic evaluation of BCCT. The most relevant publications related to the mentioned topics are pre- sented, critically analysed and put in chronological perspective. Current and future trends are also discussed.

Breast irradiation and lactation: a review

The incidence of breast cancer in premenopausal women is increasing and many of them still remain fertile after treatment. Allied to the current tendency to postpone pregnancy, it is expected that an increasing number of patients undergoing conservative treatment for breast cancer will get pregnant. Anatomical and histopathological aspects and the probability of lactation and breast feeding after breast irradiation are reviewed in this article. Lactation is possible after radiotherapy, present in at least 50% of the patients, but in reduced volume. This perspective is more correlated to the type of surgery and radiation dose used. Biochemical changes were observed in irradiated breast milk. Breastfeeding in the contralateral breast is not affected.

Expérience brestoise dans la radiothérapie peropératoire des cancers du sein

Aim: We believe that conservative treatment of early breast cancer may not require radiotherapy that encompasses the whole breast in all patients. We have developed a novel therapeutic approach that allows targeted intraoperative radiotherapy (Targit) to be safely and accurately delivered in a standard operating theatre. We are currently recruiting for a randomized trial testing whether Targit can replace the whole 6 weeks of post-operative radiotherapy after breast conserving surgery.Methods: This paper describes the operative technique. It employs a miniature electron-beam-driven X-ray source called INTRABEAM™ (PeC) that emits soft X-rays (50 kV) from within the breast. The X-rays are emitted from the tip of a 10 cm×3.2 mm diameter probe, that is enclosed in a spherical applicator (available in 2.5–5 cm diameter sizes), which in turn is inserted in the tumour bed and intraoperative radiotherapy is delivered in about 25 min. The prescribed dose is 5 and 20 Gy at 1 cm and 0.2 cm respectively, from the tumour bed.Results: The biologically effective dose is 7–53 Gy for α/β=10 and 20–120 Gy for α/β=1.5. The quick attenuation of the radiation reduces the damage to normal tissues and allows radiotherapy to be delivered in a standard operating theatre. Tungsten impregnated rubber sheets, cut to size, are placed on the chest wall to protect the heart/lungs and over the wound to stop stray radiation. The skin dose is monitored with thermoluminescent detectors (TLDs). After wide local excision of the tumour and good haemostasis, a spherical applicator is inserted in the tumour bed and the target breast tissues are wrapped around it with a purse-string suture. Thus, true conformation of the target around the applicator source is achieved in real time.Conclusion: As a tumour bed boost, this technique has the potential to reduce local recurrence by avoiding geographical misses and achieving excellent dosimetry. In patients with low risk of local recurrence, it has the potential to replace the full 6 weeks of post-operative radiotherapy with considerable implications to patients and hospitals.

Intensity modulated radiotherapy (IMRT) with simultaneous integrated boost (SIB) in a patient with left breast cancer and pectus excavatum

Pectus excavatum is a frequent anomaly. It represents a challenge for adjuvant radiotherapy in the conservative treatment of breast cancer. Primary objective of this study is to compare dosimetric outcomes, normal tissue complication probability (NTCP), and integral dose using four radiation techniques. Secondary objective is to describe acute toxicity and setup errors. A 57-year-old female patient with an inner quadrant, left breast, ductal carcinoma in situ, was identified. Whole breast was prescribed with 50 Gy in 25 fractions. Boost planning target volume (PTV) was prescribed with 60 Gy in 30 fractions for sequential boost (SB) plans or 57.5 Gy in 25 fractions in the simultaneous integrated boost (SIB) plan. All plans were normalized to deliver 47.5 Gy to 95 % of the breast PTV. Daily image-guided radiotherapy (IGRT) was performed. Setup deviations were described. Constraints were not accomplished for heart when using intensity modulated radiotherapy (IMRT) + SB or conformal radiotherapy with three photon fields and SB. Left lung constraint was not achieved by any of the techniques in comparison. IMRT + SIB and conformal photons and electrons + SB plan were closer to the objective. Integral doses were lower with IMRT for heart and ipsilateral lung; however, it were higher for contralateral breast and lung. Coverage and tumoral conformity indexes were similar for all techniques in comparison. Greater inhomogeneity was observed with the photons and electrons + SB. IMRT + SIB treatment was administered daily with grade I skin toxicity. The highest setup error was observed in Y direction. Planning target volume coverage was similar with the four techniques. Homogeneity was superior with both IMRT plans. A good balance between dose constraints for organs at risk, PTV coverage, homogeneity, and NTCP was observed with IMRT + SIB. The documented daily setup error justifies the use of online IGRT.

Oncoplastic approach in the conservative treatment of breast cancer: analysis of costs

To analyze the direct costs of conservative surgical treatment of breast cancer, performed in a university hospital, to the Brazilian National Health Care Public System (SUS), checking the impact of the oncoplastic approach on these costs. One hundred thirty eight breast cancer patients who had undergone conservative treatment with oncoplastic approach (n=36) or not (control group, n=102), in the period from 2005 to 2010, were enrolled. Sociodemographic and clinical data were recorded. The direct costs of the surgical procedure were obtained and analyzed. Groups did not differ in regard to age (p=0.963), and patients in oncoplastic group had a longer time of hospital stay (p=0.000). The median direct cost for the oncoplastic group was R$461.00 and for the control group was R$229.00 (p=0.000). The oncoplastic approach has generated higher direct costs in conservative surgical treatment of breast cancer to SUS.

Early-stage breast cancer conservative treatment: high-dose-rate brachytherapy boost in a single fraction of 700 cGy to the tumour bed

Conservative treatment represents the current therapy for early-stage breast cancer. When risk factors for local relapse exist, a tumour bed boost is required. Retrospectively, we evaluated the prognostic factors influencing local recurrence (LR), overall survival (OS) and disease-free survival (DFS). After conservative treatment, 210 patients received a single-dose HDR brachytherapy (HDRBT) boost between June 1996 and December 2005. Mean age was 57 years; 75% had invasive ductal carcinoma. The most frequent surgery was lumpectomy (55.7%); 39.4% were G3, 18.6% intraductal component >25% and only 22% had negative margins. With a mean follow-up of 85 months, at 5 and 10 years the OS was 93% and 88%, DFS 92% and 89%, and LR 3.6% and 5.3%, respectively. For LR, the risk factors were carcinoma in situ, N+ and involved margins, whereas for metastasis, the risk factors were T2 tumours, stage III, N+ and the presence of local recurrence. HDR-BT boost in one fraction is an effective, simple and safe method for reducing LR. The outpatient setting and shorter treatment duration represent undeniable advantages.

Time-Course of Arm Lymphedema and Potential Risk Factors for Progression of Lymphedema After Breast Conservation Treatment for Early Stage Breast Cancer

The objective of this study was to describe the progression of arm lymphedema (ALE) after the initial presentation among patients receiving breast conservation therapy for early stage breast cancer and to identify potential risk factors contributing to ALE progression. The study sample was the 266 stage I or II breast cancer patients with documented ALE who underwent breast conservation therapy that included lumpectomy, axillary staging followed by radiation therapy. ALE were graded according to a difference of 0.5-2 cm (mild), 2.1-3 cm (moderate), and >3 cm (severe) in the circumference between the upper extremities for the treated and untreated sides. ALE at presentation was scored as mild, moderate, and severe in 109 (41%), 125 (47%), and 32 (12%) patients, respectively. One third of patients with ALE progressed to a more severe grade of lymphedema at 5 years of follow-up. Age older than 65 years at the time of breast cancer treatment was associated with higher risk of ALE progression when compared 65 year age or younger (p = 0.04). The patients who had regional lymph node irradiation including posterior axillary boost were at higher risk of lymphedema progression than the patients treated with whole breast irradiation only (p = 0.001). Progression of ALE is a common occurrence. The current study provides support for the utility of routine arm measurements after breast cancer treatment to facilitate timely diagnosis and treatment of ALE.

The impact of the sentinel node concept on the aesthetic outcome of breast cancer conservative surgery

The sentinel node (SN) concept has brought numerous advantages to women with breast cancer. Sparing axillary node anatomy and physiology may enhance the cosmetic results of breast cancer conservative surgery, either owing to less breast edema or to a better tolerance to the effects of surgery and radiotherapy. Our aim was to compare the cosmetic outcome of two randomized groups of patients, on a subjective and objective basis. A consecutive series of breast cancer patients (n = 60) submitted to partial mastectomy plus axillary dissection or partial mastectomy plus SN biopsy (included in a randomized trial) was photographed. Photos were analysed in three ways: by seven different observers according to seven features from poor to excellent; two observers estimated the percentage of breast retraction assessment (pBRA); or by the BCCT.core 1.0(®) software. The panel subjective analysis showed a benefit in terms of the skin colour for the patients submitted to SN biopsy only. This group of patients did not show any advantage in terms of pBRA estimates even after the complex BCCT.core appraisal. The sentinel node concept is not associated with improvements in the aesthetic outcome of breast cancer conservative treatment.

Fatores preditivos para um bom resultado estético em cirurgias conservadoras por câncer de mama

INTRODUÇÃO: O câncer de mama é uma doença frequente e a cirurgia segmentar associada à radioterapia é considerada o tratamento de escolha para a maioria das pacientes. O objetivo da cirurgia conservadora é a obtenção de resultado estético satisfatório. O tratamento irradiante é imperativo e a radioterapia intraoperatória é uma promissora técnica de irradiação. O objetivo deste estudo foi avaliar o resultado estético final de pacientes com câncer de mama em estádio inicial submetidas a cirurgia conservadora, fechamento primário da ferida operatória e radioterapia adjuvante (radioterapia convencional ou radiação intraoperatória em dose única no leito tumoral), bem como analisar a influência de outras variáveis no resultado cosmético. MÉTODO: Fechamento primário da ferida operatória após tratamento conservador do câncer de mama foi realizado em 66 pacientes. As pacientes foram avaliadas e fotografadas e seus dados foram coletados dos prontuários médicos. RESULTADOS: Observou-se que 40,4% das pacientes apresentaram algum grau de assimetria; contudo, frequentemente a mama operada se apresentava esteticamente melhor que a mama sadia, em especial em mamas grandes (P = 0,052) e ressecções dos quadrantes superiores, que melhoravam o grau de ptose e ficavam, consequentemente, mais bonitas. (P = 0,002 e P = 0,001, respectivamente). A incisão periareolar (P = 0,008) é fator preditivo de bom resultado estético; em contrapartida, o diabetes e a quimioterapia predizem mau resultado (P = 0,046 e P = 0,073, respectivamente). CONCLUSÕES: Quando não é possível remodelar o tecido mamário, a assimetria é frequente. Incisões periareolares, mamas volumosas e tumor em quadrante superior são considerados fatores preditivos de bom resultado estético, e como valor preditivo negativo, diabetes melito, quimioterapia e tumor em quadrante inferior. A radiação intraoperatória em dose única no leito tumoral proporciona tratamento irradiante mais rápido e menos desgastante para a paciente e demonstrou equivalência no aspecto estético sobre a cicatriz e a mama.

Recommendations for the aesthetic evaluation of breast cancer conservative treatment

During the Turning Subjective Into Objective seminar held in Lisbon in May 2011, experts in the topic gathered to discuss the unsolved problems of aesthetic evaluation of breast-conserving treatment (BCT). The purpose of this study is to review the main methodological issues related to the aesthetic evaluation of BCT, to discuss currently used methods of evaluation and the lack of a gold standard, and to write a set of recommendations that can be used as guidance for the aesthetic evaluation of BCT.