Partial Mastectomy For Breast Cancer Research Articles

Use of a Bioabsorbable Implant-Acellular Dermal Matrix Construct to Facilitate Oncoplastic Breast-conserving Surgery.

Deformity after partial mastectomy for breast cancer is not uncommon. The immediate replacement of breast volume by a bioabsorbable implant has been shown to facilitate tissue ingrowth, maintain breast contour, reduce scarring and fibrosis, and preserve cosmesis. Soft tissue coverage is critical to minimize palpability and to prevent infection and extrusion of this device, especially after radiotherapy. This coverage is often not possible after significant oncological resection or in leaner patients. Here, we describe the use of a bioabsorbable implant-acellular dermal matrix construct in patients with insufficient soft tissue coverage after wide local excision.

The Effect of Waiting Times for Postoperative Radiotherapy on Outcomes for Women Receiving Partial Mastectomy for Breast Cancer: a Systematic Review and Meta-Analysis

AimsTo determine the effect of delay in postoperative radiotherapy on local recurrence and overall survival in women receiving partial mastectomy for breast cancer. Materials and methodsThis was a systematic review and meta-analysis of published literature. Relevant reports were identified from MEDLINE, EMBASE and the Cochrane Register of Controlled Trials in all languages from 1975 to April 2015, in addition to the abstracts from the annual meetings of major radiotherapy conferences from 2000 to 2011. Reference lists were hand searched to find additional relevant reports and OvidSP's ‘Find Citing’ function was used to find studies citing papers identified in the primary search. Studies were included if they met the following criteria: (i) all patients received partial mastectomy and radiotherapy, (ii) a delay from surgery to radiotherapy was reported and (iii) one or more of local control/failure and/or survival were reported. Observational studies and randomised controlled trials were included. Studies including patients with in situ disease were excluded. Studies were classified as high quality if they adequately controlled for factors known to be associated with the outcomes of interest. Study quality was independently assessed by three authors. Initial disagreements about three studies were resolved by consensus. Only high-quality studies were included in the primary analysis. Delay was modelled as a continuous variable and the relative risk of local recurrence and the relative risk of death are reported per month of delay. The study results were combined using a fixed-effects model. ResultsThirty-four relevant publications including 79 616 patients were identified in the systematic review. Ten high-quality publications reported on local recurrence (13 291 patients) and four high-quality studies reported on overall survival (2207 patients). The relative risk of local recurrence per month of delay was 1.08 (95% confidence interval 1.02–1.14). The relative risk of death per month of delay was 0.99 (95% confidence interval 0.94–1.05). ConclusionsDelays in post-lumpectomy radiotherapy are associated with a significant increase in the risk of local recurrence. We recommend that waiting times for radiotherapy should be kept as short as reasonably achievable.

Five-Year Oncologic Outcomes of Volume Displacement Procedures After Partial Mastectomy for Breast Cancer

BackgroundVolume displacement techniques that use remnant breast tissue are useful in reconstructive procedures after partial mastectomy. The authors analyzed the oncologic results of volume displacement surgery after partial mastectomy and their associations with various clinicopathologic factors. Patients and MethodsOne hundred fifty-eight eligible patients with breast cancer who underwent volume displacement procedures after partial mastectomy were included in this prospective study, in which associations between clinicopathologic factors and locoregional recurrence, distant metastasis, and death were analyzed. ResultsDuring a mean follow-up of 60.8 months, locoregional recurrence occurred in 3 cases (1.9%) and distant metastasis in 4 (2.5%). According to multivariate analysis, bilaterality of breast cancer (P = .035) and adjuvant chemotherapy (P = .042) were associated with distant metastasis. ConclusionVolume displacement procedures after partial mastectomy have good oncologic results and are acceptable procedures for patients with breast cancer.

Latissimus Dorsi Mini-Flap as a Volume Replacement Technique after Partial Mastectomy for Breast Cancer in the Upper and Central Breast Quadrants: A Single Center Experience

Background: The latissimus dorsi (LD) muscle flap plays an essential role in breast reconstruction after partial mastectomy for cancer because of its stability and versatility. We evaluated both oncologic and aesthetic outcomes in addition to the related complications of this flap as an adjunct to breast conserving surgery in the management of breast cancer patients. Methods: All patients underwent a one-stage procedure with immediate reconstruction through two-steps operation; wider local excision utilizing oncoplastic principles and mini flap harvest & volume replacement. Results: The study included 34 cases with early breast cancer; 30 patients had partial breast resection and defect refilling by LD mini-flap, three patients underwent mastectomy and one patient underwent extended LDF. The mean defect volume was (212.63 cm3 ± 59.57) cm3, while the mean flap volume was (218.27 cm3 ± 53.64 cm3). Patient self-evaluation of the cosmetic outcome was excellent in 20%, good in 60% and satisfactory in 20% of patients. Panel evaluation according to Harvard scale showed excellent in 36.7%, good in 36.7%, fair in 26.7% of patients. The median hospital stay was 4 days. The postoperative complications included wound gap in 4 patients (13.3%), postoperative donor site seroma in 16 patients (53.3%). No flap loss or necrosis, no affection on arm or shoulder mobility occurred. Lastly, no tumor recurrence till now. Conclusion: Latissimus dorsi mini-flap can achieve adequate cosmetic and oncologic outcomes with a low incidence of complications in patients with early stage (I/II) breast cancer and small to medium sized breasts.

Can routine cavity shave margins (CSM) improve local control in breast cancer? Initial results of the SHAVE trial, a prospective randomized controlled trial of routine CSM vs. standard partial mastectomy (SPM).

1012 Background: Considerable controversy exists regarding the utility of routine CSM in patients undergoing partial mastectomy for breast cancer. We performed a prospective RCT to determine whethe...

SHAVE: A randomized controlled trial of routine shave margins versus standard partial mastectomy.

TPS1145 Background: It is well known that partial mastectomy for breast cancer is associated with a positive margin rate of 20-40% in most series. This has led some surgeons to advocate for routine cavity shave margins as a means of reducing re-excision rates. Others, however, feel that such a practice may be unwarranted and question the volume of tissue removed, cosmetic outcome and increase in operative time. It is unclear which of these two approaches is optimal; therefore, a prospective randomized controlled trial was proposed. Methods: Given the primary endpoint of positive margin rates (defined as a margin of < 1mm), the study was powered to find a difference between 30% in the standard partial mastectomy group and 15% in the routine shave margin group. To reach a power of 80% with alpha of 5%, 122 patients were required in each arm; we therefore set N=250 with a 1:1 randomization scheme. Patients are evaluated preoperatively and all patients undergoing a partial mastectomy for stage 0-III breast cancer are eligible; including those who have completed neoadjuvant chemotherapy. Patients are stratified according to stage and randomized within strata. After informed consent, patients undergo a standard partial mastectomy (including specimen radiography as needed). Surgeons may resect additional tissue at that time according to their standard practice. At the completion of this procedure, the randomization envelope is opened in the operating room and surgeons are instructed to either shave (ie., take additional circumferential margins) or close (no shave). Patients will be followed for five years. Outcome measures include: positive margin/re-excision rate, local recurrence, volume of tissue resected, cosmetic outcome, and intraoperative time. To date, over 130 patients have accrued to this trial. Initial results are expected to be reported in 2014. Clinicaltrials.gov identifier: NCT01452399

Clinical Outcomes of Video‐Assisted Skin‐Sparing Partial Mastectomy for Breast Cancer and Immediate Reconstruction with Latissimus Dorsi Muscle Flap as Breast‐Conserving Therapy

Skin-sparing partial mastectomy (SSPM) has yet to be investigated as a breast-conserving therapy for early-stage breast cancer. We report the clinical outcomes for video-assisted SSPM (VA-SSPM) with immediate breast reconstruction using autogenous tissue. VA-SSPM is indicated for early-stage breast cancer arising in the upper-outer or lower-outer quadrant without skin involvement. An incision is placed along the midaxillary line, and SSPM is performed under endoscopic guidance using subcutaneous tunneling and lifting methods. Through the same incision, a latissimus dorsi muscle flap is harvested for breast reconstruction. From January 2000 to October 2007, 168 patients (Tis, n = 24; T1, n = 37; T2, n = 107) underwent VA-SSPM, and morbidity, curability, and postoperative patient satisfaction were investigated. Postoperative complications included skin necrosis (2.4%, n = 4) and muscle flap necrosis (0.6%, n = 1), but no severe complications were observed. After a mean follow-up of 58.6 months, eight patients (4.8%) experienced local recurrence. Sixty-month distant metastasis-free survival rates for Tis, T1, and T2 were 100%, 97%, and 83.3%, respectively, with an overall rate of 88.4%. Furthermore, overall survival rates for Tis, T1, and T2 were 100%, 94.1%, and 94.4%, respectively, with an overall survival rate of 95% for all patients. A patient satisfaction survey showed that 81.6% of patients evaluated the surgery as "good." VA-SSPM for early-stage breast cancer improves cosmetic results and achieves high patient satisfaction without increasing local or distant organ recurrence. This method offers a useful local therapy for early-stage breast cancer.

Treatment of positive or close (

Treatment of positive or close (<1mm) margins following partial mastectomy for breast cancer

Closure of partial mastectomy

A longstanding controversy surrounds whether to close breast parenchyma at the completion of a partial mastectomy for breast cancer. Modification of a technique described 80 years ago finds the middle ground between various opinions and simultaneously addresses 2 issues: (1) approximation of the deep and superficial surfaces of the parenchyma, without sutures within the parenchyma, minimizes “dents;” and (2) a radial suture line preserves the distance from the nipple to the periphery of the breast which minimizes traction on the nipple.

2–33 Prospective Study of Intraoperative Mammary Ductoscopy in Patients Undergoing Partial Mastectomy for Breast Cancer

2–33 Prospective Study of Intraoperative Mammary Ductoscopy in Patients Undergoing Partial Mastectomy for Breast Cancer

Multifocal intraportal invasion of breast carcinoma diagnosed by laparoscopy-assisted liver biopsy

Hepar lobatum carcinomatosum (HLC) is defined as an acquired hepatic deformity consisting of an irregularly lobulated hepatic contour caused by intravascular infiltration of metastatic carcinoma. To date, only nine cases of HLC have been reported in the literature. We report a case of a 68-year-old woman showing hepatic metastasis of breast carcinoma in radiologically unidentified form. Initially, she received left partial mastectomy for breast cancer but solid hepatic metastases were identified in S(2) and S(6), 9 mo after surgery. Then, they responded to chemotherapy and radiologically disappeared. After radiological disappearance of the liver tumors, the patient's blood chemistry showed abnormal liver function. A CT scan demonstrated heterogeneous enhancement effect in the liver in the late phase, suggesting uneven hepatic blood supply. Hepatic deformity was not obvious. Laparoscopy revealed a slightly deformed liver surface with multiple indentations and shallow linear depressions. Furthermore, a wide scar was observed on the surface of S(2) possibly at the site where the metastatic tumor existed before chemotherapy. Liver biopsy from the wide scar lesion showed intraportal tumor thrombi with desmoplastic change. Because of its similarity to the histology of the original breast cancer, we concluded that the hepatic functional abnormalities and slightly deformed liver surface were derived from the circulatory disturbance caused by microscopic tumor thrombi. Besides, since the wide scar was located at the site of the pre-existing tumor, it is probable that chemotherapy was an important cause of fibrous scarring as a result of tumor regression. These morphologic findings are compatible with those of HLC. Laparoscopy-assisted liver biopsy was useful to make definite diagnosis, even though the hepatic deformity was radiologically undetectable.

Prospective study of intraoperative mammary ductoscopy in patients undergoing partial mastectomy for breast cancer

Background The purpose of this study was to critically evaluate the added benefit of intraoperative mammary ductoscopy on margin assessment and identification of occult intraductal pathology in patients undergoing therapeutic partial mastectomy for in-situ and invasive breast carcinoma. Methods Eligible patients underwent intraoperative mammary ductoscopy before partial mastectomy. In patients where an intraductal abnormality was identified and the mammary ductoscope was not within the partial mastectomy cavity, an additional ductoscopy-directed margin of tissue was analyzed. Results Nineteen of 30 (63%) patients yielded nipple aspirate fluid and were able to undergo mammary ductoscopy; an intraductal abnormality was identified in 15 of 19 (79%) patients. Only 1 patient had an occult infiltrating carcinoma, which was outside of the resection cavity and identified by ductoscopy. Conclusions Although mammary ductoscopy can identify intraductal abnormalities during partial mastectomy in a significant number of patients, many of these findings may be either benign or within the standard field of resection, thus adding no benefit to the patient.

Partial mastectomy for breast cancer.

Partial mastectomy for breast cancer.

Points: Partial mastectomy for breast cancer

<h3>Objectives</h3> To compare costs associated with different models of outpatient parenteral antimicrobial therapy (OPAT) delivery with costs of inpatient (IP) care across key infection groups managed via OPAT in the UK. <h3>Design</h3> A cost-minimisation design was used due to evidence of similarities in patient and treatment outcomes between OPAT and IP care. A bottom-up approach was undertaken for the evaluation of OPAT associated costs. The British Society of Antimicrobial Chemotherapy National Outcomes Registry System was used to determine key infection diagnoses, mean duration of treatment and most frequent antibiotics used. <h3>Setting</h3> Several OPAT delivery settings were considered and compared with IP care. <h3>Interventions</h3> OPAT models considered were OP clinic model, nurse home visits, self (or carer)-administration by a bolus intravenous, self-administration by a commercially prefilled elastomeric device, continuous intravenous infusion of piperacillin with tazobactam or flucloxacillin with elastomeric device as OP once daily and, specifically for bone and joint and diabetic foot infections, complex outpatient oral antibiotic therapies. <h3>Results</h3> Base case and a range of scenario results showed all evaluated OPAT service delivery models to be less costly than IP stay of equivalent duration. The extent of savings varied by OPAT healthcare delivery models. Estimated OPAT costs as a proportion of IP costs were estimated at 0.23–0.53 (skin and soft-tissue infections), 0.34–0.46 (complex urinary tract infections), 0.23–0.51 (orthopaedic infections), 0.24–0.42 (diabetic foot infections) 0.40–0.56 (exacerbations of bronchiectasis) and 0.25–0.42 (intra-abdominal infections). Partial or full complex oral antibiotic therapies in orthopaedic or diabetic foot infections costs were estimated to be 0.13–0.26 of IP costs. Main OPAT costs were associated with staff time and antimicrobial medications. <h3>Conclusions</h3> OPAT is a cost-effective use of National Health Service resources for the treatment of a range of infections in the UK in patients who can be safely managed in a non-IP setting.

Partial mastectomy for breast cancer.

Partial mastectomy for breast cancer.