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Breast (Edinburgh, Scotland) Apr 2021The non-inferiority of combined breast conservation surgery (BCS) and radiotherapy (breast conservation therapy or BCT) compared to mastectomy in sporadic breast cancer... (Meta-Analysis)
Meta-Analysis
BACKGROUND
The non-inferiority of combined breast conservation surgery (BCS) and radiotherapy (breast conservation therapy or BCT) compared to mastectomy in sporadic breast cancer cases is well recognised. Uncertainty remains regarding optimal surgical practice in BRCA mutation carriers.
AIMS
To evaluate the oncological safety of combined BCT versus mastectomy in BRCA mutation carriers following breast cancer diagnosis.
METHODS
A systematic review was performed as per PRISMA and MOOSE guidelines. Observational studies comparing BCS and mastectomy in BRCA carriers were identified. Dichotomous variables were pooled as odds ratios (OR) using the Mantel-Haenszel method. Log hazard ratios (lnHR) for locoregional recurrence (LRR), contralateral breast cancer, disease-free and overall survival and their standard errors were calculated from Kaplan-Meier or cox-regression analyses and pooled using the inverse variance method.
RESULTS
Twenty three studies of 3807 patients met inclusion criteria; 2200 (57.7%) were BRCA1 and 1212 (31.8%) were BRCA2 carriers. Median age at diagnosis was 41 years with 96 months follow up. BCS was performed on 2157 (56.7%) while 1408 (41.5%) underwent mastectomy. An increased risk of LRR was observed in patients treated with BCS (HR:4.54, 95% Confidence Interval: 2.77-7.42, P < 0.001, heterogeneity (I) = 0%). However, the risks of contralateral breast cancer (HR:1.51, 95%CI: 0.44-5.11, P = 0.510, I = 80%), disease recurrence (HR:1.16, 95%CI: 0.78-1.72, P = 0.470, I = 44%), disease-specific recurrence (HR:1.58, 95%CI: 0.79-3.15, P = 0.200, I = 38%) and death (HR:1.10, 95%CI: 0.72-1.69, P = 0.660, I = 38%) were equivalent for combined BCT and mastectomy.
CONCLUSIONS
Survival outcomes following combined BCT is comparable to mastectomy in BRCA carriers. However, the risk of LRR is increased. Patient counselling should be tailored to incorporate these findings.
Topics: Breast Neoplasms; Female; Genes, BRCA2; Humans; Mastectomy; Mastectomy, Segmental; Mutation; Neoplasm Recurrence, Local; Radiotherapy, Adjuvant
PubMed: 33582622
DOI: 10.1016/j.breast.2021.02.001 -
Breast Cancer Research and Treatment Jan 2018Seroma formation is a common complication after mastectomy. This review aims to elucidate which surgical techniques are most effective in reducing the dead space and... (Review)
Review
BACKGROUND
Seroma formation is a common complication after mastectomy. This review aims to elucidate which surgical techniques are most effective in reducing the dead space and therefore seroma formation in patients undergoing mastectomy.
METHODS
A literature search was performed to identify clinical studies comparing any form of flap fixation to conventional closure technique in patients undergoing mastectomy with or without axillary clearance. Studies were eligible for inclusion if outcome was described in terms of seroma formation and/or complications of seroma formation. Studies on animal research or breast reconstruction with tissue expanders or flap harvesting (latissimus dorsi) were excluded.
RESULTS
A total of nine articles were eligible for inclusion. Five were retrospective studies and four were prospective. Retrospective and prospective studies have demonstrated the higher incidence of seroma formation in patients not undergoing mechanical flap fixation. The incidence of seroma-related complications in these studies vary. Four out of the nine studies demonstrate that patients undergoing flap fixation, need significantly fewer seroma aspirations. There are very few studies on the use of tissue glues preventing seroma formation.
CONCLUSION
The scientific body of evidence favoring flap fixation after mastectomy is convincing. Mechanical flap fixation seems to reduce seroma formation and seroma aspiration after mastectomy. There are, however, no well-powered randomized controlled trials evaluating all aspects of seroma formation and its sequelae. Further research should elucidate whether flap fixation using sutures or tissue glue is superior.
Topics: Breast Neoplasms; Female; Humans; Mammaplasty; Mastectomy; Seroma; Superficial Back Muscles; Surgical Flaps
PubMed: 29039118
DOI: 10.1007/s10549-017-4540-x -
European Journal of Surgical Oncology :... Apr 2021Seroma is a common complication after mastectomy. The aim of this review is to elucidate whether closed suction drainage can safely be omitted in patients undergoing...
BACKGROUND
Seroma is a common complication after mastectomy. The aim of this review is to elucidate whether closed suction drainage can safely be omitted in patients undergoing mastectomy when assessing seroma formation and its complications. The second aim is to assess the influence of flap fixation on seroma related complications, as there is existing evidence showing that combining mastectomy with flap fixation may make the use of drainage systems obsolete.
SEARCH & SELECTION
A review of the literature was performed and articles that compared mastectomy with drainage and mastectomy without drainage were selected. Due to the small number of eligible studies, no selection based on whether flap fixation was performed was possible. If outcome was described in terms of seroma formation or seroma related complications, papers were eligible for inclusion. Studies older than 20 years, animal studies, studies not written in English and studies with male patients were excluded.
RESULTS
A total of eight articles were eligible for inclusion. Four prospective studies and four retrospective studies were included. In four studies, flap fixation was performed. Frequency of seroma formation as well as seroma that required intervention was reported. The included studies demonstrated that omitting closed suction drainage does not lead to a higher incidence of seroma formation in patients undergoing mastectomy.
CONCLUSION
Despite substantial heterogeneity, there is evidence that drainage can safely be omitted without exacerbating seroma formation and its complications. A well-powered, randomized controlled trial evaluating the effect of drainage omission on seroma formation, with or without flap fixation, is needed.
Topics: Axilla; Breast Neoplasms; Drainage; Female; Humans; Lymph Node Excision; Mastectomy; Postoperative Complications; Sentinel Lymph Node Biopsy; Seroma; Surgical Flaps; Surgical Wound Infection; Sutures
PubMed: 33051116
DOI: 10.1016/j.ejso.2020.10.010 -
Supportive Care in Cancer : Official... Dec 2022To review and update the incidence and risk factors for breast cancer-related lymphedema based on cohort studies. (Meta-Analysis)
Meta-Analysis Review
PURPOSE
To review and update the incidence and risk factors for breast cancer-related lymphedema based on cohort studies.
METHODS
The study was guided by the Joanna Briggs Institute methodology and the Cochrane handbook for systematic reviews. PubMed, EMBASE, CINAHL, Scopus, Web of Science, The Cochrane Library, CNKI, SinoMed, and Wan Fang Database were searched from inception to November 15, 2021. Cohort studies reported adjusted risk factors were selected. PRISMA guideline was followed. Study quality were evaluated using the Newcastle-Ottawa scale. Random-effects models were adopted. The robustness of pooled estimates was validated by meta-regression and subgroup analysis. Lymphedema incidence and adjusted risk factors in the multivariable analyses with hazard / odds ratios and 95% CIs were recorded.
RESULTS
Eighty-four cohort studies involving 58,358 breast cancer patients were included. The pooled incidence of lymphedema was 21.9% (95% CI, 19.8-24.0%). Fourteen factors were identified including ethnicity (black vs. white), higher body mass index, higher weight increase, hypertension, higher cancer stage (III vs. I-II), larger tumor size, mastectomy (vs. breast conservation surgery), axillary lymph nodes dissection, more lymph nodes dissected, higher level of lymph nodes dissection, chemotherapy, radiotherapy, surgery complications, and higher relative volume increase postoperatively. Additionally, breast reconstruction surgery, and adequate finance were found to play a protective role. However, other variables such as age, number of positive lymph nodes, and exercise were not correlated with risk of lymphedema.
CONCLUSION
Treatment-related factors still leading the development of breast cancer-related lymphedema. Other factors such as postoperative weight increase and finance status also play a part. Our findings suggest the need to shift the focus from treatment-related factors to modifiable psycho-social-behavioral factors.
Topics: Humans; Female; Mastectomy; Breast Neoplasms; Axilla; Unilateral Breast Neoplasms; Breast Cancer Lymphedema; Lymphedema; Lymph Node Excision; Risk Factors; Cohort Studies
PubMed: 36513801
DOI: 10.1007/s00520-022-07508-2 -
Plastic and Reconstructive Surgery Aug 2022Primary cadaveric studies were reviewed to give a contemporary overview of what is known about innervation of the female breast and nipple/nipple-areola complex. (Meta-Analysis)
Meta-Analysis
BACKGROUND
Primary cadaveric studies were reviewed to give a contemporary overview of what is known about innervation of the female breast and nipple/nipple-areola complex.
METHODS
The authors performed a Preferred Reporting Items for Systematic Reviews and Meta-Analyses-compliant systematic review and meta-analysis. The authors searched four electronic databases for studies investigating which nerve branches supply the female breast and nipple/nipple-areola complex or describing the trajectory and other anatomical features of these nerves. Inclusion criteria for meta-analysis were at least five studies of known sample size and with numerical observed values. Pooled prevalence estimates of nerve branches supplying the nipple/nipple-areola complex were calculated using random-effects meta-analyses; the remaining results were structured using qualitative synthesis. Risk of bias within individual studies was assessed with the Anatomical Quality Assurance checklist.
RESULTS
Of 3653 studies identified, 19 were eligible for qualitative synthesis and seven for meta-analysis. The breast skin is innervated by anterior cutaneous branches and lateral cutaneous branches of the second through sixth and the nipple/nipple-areola complex primarily by anterior cutaneous branches and lateral cutaneous branches of the third through fifth intercostal nerves. The anterior cutaneous branch and lateral cutaneous branch of the fourth intercostal nerve supply the largest surface area of the breast skin and nipple/nipple-areola complex. The lateral cutaneous branch of the fourth intercostal nerve is the most consistent contributory nerve to the nipple/nipple-areola complex (pooled prevalence, 89.0 percent; 95 percent CI, 0.80 to 0.94).
CONCLUSIONS
The anterior cutaneous branch and lateral cutaneous branch of the fourth intercostal nerve are the most important nerves to spare or repair during reconstructive and cosmetic breast surgery. Future studies are required to elicit the course of dominant nerves through the breast tissue.
Topics: Biological Phenomena; Breast; Dissection; Female; Humans; Intercostal Nerves; Mammaplasty; Mastectomy; Nipples
PubMed: 35652898
DOI: 10.1097/PRS.0000000000009306 -
Journal of Plastic, Reconstructive &... Nov 2023Animal-derived acellular dermal matrices (ADMs) are increasingly being used in prepectoral direct-to-implant (DTI) breast reconstruction. However, the indications and... (Review)
Review
BACKGROUND
Animal-derived acellular dermal matrices (ADMs) are increasingly being used in prepectoral direct-to-implant (DTI) breast reconstruction. However, the indications and complication profile associated with this type of reconstruction remain unclear. This study aimed to perform a systematic review of the available literature on the use of animal-derived ADM in prepectoral DTI breast reconstruction.
METHODS
Three different literature databases, namely, PubMed, Web of Sciences, and Embase were screened using the following keywords: "immediate" AND "pre-pectoral" OR "prepectoral" AND "ADM breast reconstruction." Animal-derived ADM used (porcine - Braxon® and non-Braxon® - and bovine - Surgimend®) anthropometric information, clinical data, and complications profile were considered.
RESULTS
A total of 340 articles were initially identified, of which only 45 articles (5089 patients and 6598 reconstructed breasts) satisfied our inclusion criteria. The most widely used ADM was Braxon® in the context of conservative mastectomies. In most studies, a subcutaneous layer > 1 cm and lack of previous radiotherapy were considered prerequisites for this type of reconstruction. An increased risk of complications was found in smokers, patients who underwent radiation treatment, patients with high breast volumes, and patients with cancers requiring axillary dissection. Data related to the role of diabetes, high body mass index, and breast implant size on surgical outcomes were instead inconcludent. Age was not directly proportional to the complications.
CONCLUSION
The complications associated with different animal-derived ADMs are generally comparable. The profile of patients required for eligibility for this type of reconstruction appears to have been identified and is in line with current recommendations.
Topics: Humans; Animals; Cattle; Swine; Female; Mastectomy; Acellular Dermis; Breast Neoplasms; Mammaplasty; Breast Implantation; Breast Implants; Retrospective Studies
PubMed: 37716255
DOI: 10.1016/j.bjps.2023.08.020 -
Annals of the Royal College of Surgeons... Jan 2022Oncoplastic breast conserving surgery allows higher volume excision to achieve oncological safety with minimal aesthetic compromise. The primary outcome of this study...
INTRODUCTION
Oncoplastic breast conserving surgery allows higher volume excision to achieve oncological safety with minimal aesthetic compromise. The primary outcome of this study was to assess the oncological safety in the setting of volume replacement oncoplastic breast conserving surgery. The secondary objective was to assess cosmetic outcome.
METHODS
A systematic literature review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines to explore the oncological safety of oncoplastic breast conserving surgery, with particular focus on volume replacement. Resection margin rates, re-excision rates, conversion to mastectomy rates, local and distant disease recurrence, volume replacement techniques, cosmetic outcomes and patient-reported outcome measures were assessed.
FINDINGS
The search criteria identified 155 articles, of which 40 met the inclusion criteria. These studies included 2,497 patients with a mean age of 47.8 years (range 38.4-59.6 years), a body mass index of 24.3kg/m (22.1-28.0kg/m), with a mean follow-up of 37.1 months (6-125 months). A variety of volume replacement techniques were used, most commonly latissimus dorsi and chest wall perforator flaps. Whole mean pathological tumour size was 29.7mm (17-65mm) and mean specimen weight was 123.6g (46.5-220g). Mean re-excision rate was 7.2% and completion mastectomy rate was 2.3%. Locoregional and distant recurrence rate was 2.5% (0-8.1%) and 3.1% (0-14.6%), respectively. There were a variety of patient-reported outcome measures employed, with overall good to excellent outcomes.
CONCLUSIONS
This review demonstrates that volume replacement oncoplastic breast conserving surgery is a safe option in terms of re-excision, completion mastectomy rates, and local and distant recurrence. Available patient-related outcome measures and cosmetic assessment tend towards better outcomes compared with wide local excision and mastectomy. However, data are significantly limited, with a paucity of high-level evidence, and it is therefore necessary to be cautious regarding the strength and interpretation of data in this review. Further prospective studies are required on this subject.
Topics: Breast Neoplasms; Esthetics; Female; Humans; Margins of Excision; Mastectomy; Mastectomy, Segmental; Neoplasm Recurrence, Local; Patient Reported Outcome Measures; Surgical Flaps
PubMed: 34767472
DOI: 10.1308/rcsann.2021.0012 -
Cancer Oct 2022Oncological safety of different types and timings of PMBR after breast cancer remains controversial. Lack of stratified risk assessment in literature makes current... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Oncological safety of different types and timings of PMBR after breast cancer remains controversial. Lack of stratified risk assessment in literature makes current clinical and shared decision-making complex. This is the first systematic review and meta-analysis to evaluate differences in oncological outcomes after immediate versus delayed postmastectomy breast reconstruction (PMBR) for autologous and implant-based PMBR separately.
METHODS
A systematic literature search was performed in MEDLINE, Cochrane Library, and Embase. The Cochrane Collaboration Handbook and Meta-analysis Of Observational Studies in Epidemiology checklist were followed for data abstraction. Variability in point estimates attributable to heterogeneity was assessed using I -statistic. (Loco)regional breast cancer recurrence rates, distant metastasis rates, and overall breast cancer recurrence rates were pooled in generalized linear mixed models using random effects.
RESULTS
Fifty-five studies, evaluating 14,217 patients, were included. When comparing immediate versus delayed autologous PMBR, weighted average proportions were: 0.03 (95% confidence interval [CI], 0.02-0.03) versus 0.02 (95% CI, 0.01-0.04), respectively, for local recurrences, 0.02 (95% CI, 0.01-0.03) versus 0.02 (95% CI, 0.01-0.03) for regional recurrences, and 0.04 (95% CI, 0.03-0.06) versus 0.01 (95% CI, 0.00-0.03) for locoregional recurrences. No statistically significant differences in weighted average proportions for local, regional and locoregional recurrence rates were observed between immediate and delayed autologous PMBR. Data did not allow comparing weighted average proportions of distant metastases and total breast cancer recurrences after autologous PMBR, and of all outcome measures after implant-based PMBR.
CONCLUSIONS
Delayed autologous PMBR leads to similar (loco)regional breast cancer recurrence rates compared to immediate autologous PMBR. This study highlights the paucity of strong evidence on breast cancer recurrence after specific types and timings of PMBR.
LAY SUMMERY
Oncologic safety of different types and timings of postmastectomy breast reconstruction (PMBR) remains controversial. Lack of stratified risk assessment in literature makes clinical and shared decision-making complex. This meta-analysis showed that delayed autologous PMBR leads to similar (loco)regional recurrence rates as immediate autologous PMBR. Data did not allow comparing weighted average proportions of distant metastases and total breast cancer recurrence after autologous PMBR, and of all outcome measures after implant-based PMBR. Based on current evidence, oncological concerns do not seem a valid reason to withhold patients from certain reconstructive timings or techniques, and patients should equally be offered all reconstructive options they technically qualify for.
Topics: Breast Neoplasms; Female; Humans; Mammaplasty; Mastectomy; Neoplasm Recurrence, Local; Transplantation, Autologous
PubMed: 35894936
DOI: 10.1002/cncr.34393 -
Strahlentherapie Und Onkologie : Organ... Jul 2018To review the evidence regarding post-mastectomy radiotherapy (PMRT) and regional nodal irradiation (RNI) after neoadjuvant chemotherapy (NACT) for breast cancer, with... (Review)
Review
Individualization of post-mastectomy radiotherapy and regional nodal irradiation based on treatment response after neoadjuvant chemotherapy for breast cancer : A systematic review.
PURPOSE
To review the evidence regarding post-mastectomy radiotherapy (PMRT) and regional nodal irradiation (RNI) after neoadjuvant chemotherapy (NACT) for breast cancer, with a special focus on individualization of adjuvant radiotherapy based on treatment response.
METHODS
A systematic literature search using the PubMed/Medline database was performed. We included prospective and retrospective reports with a minimum of 10 patients that had been published since 1 January 2000, and provided clinical outcome data analyzed by treatment response and radiotherapy.
RESULTS
Out of 763 articles identified via PubMed/Medline and hand search, 68 full text-articles were assessed for eligibility after screening of title and abstract. 13 studies were included in the systematic review, 9 for PMRT and 5 for RNI. All included studies were retrospective reports.
CONCLUSIONS
There is a considerable lack of evidence regarding the role of adjuvant radiotherapy and its individualization based on treatment response after NACT. Results of prospective randomized trials such as NSABP B‑51/RTOG 1304 and Alliance A11202 are eagerly awaited.
Topics: Breast Neoplasms; Chemotherapy, Adjuvant; Combined Modality Therapy; Female; Humans; Lymphatic Irradiation; Mastectomy; Neoadjuvant Therapy; Precision Medicine; Radiotherapy, Adjuvant
PubMed: 29383405
DOI: 10.1007/s00066-018-1270-x -
Plastic and Reconstructive Surgery Nov 2013Nipple-sparing mastectomy is a controversial option for breast cancer treatment due to locoregional recurrence and distant metastasis. In addition to these oncologic... (Review)
Review
BACKGROUND
Nipple-sparing mastectomy is a controversial option for breast cancer treatment due to locoregional recurrence and distant metastasis. In addition to these oncologic factors, technical factors such as ideal incision type or reconstructive options are also debatable. This systematic review examines current trends with nipple-sparing mastectomy, including selection criteria, locoregional and distant metastasis rates, incision choice, and reconstructive options.
METHODS
Systematic electronic searches were performed in the PubMed and Ovid databases using search terms for studies reporting outcomes following nipple-sparing mastectomy and all forms of reconstruction. Studies between 1970 and 2013 were reviewed. Pooled descriptive statistics with separate analyses for incision type and reconstructive method were performed.
RESULTS
Forty-eight studies met inclusion criteria, yielding 6615 nipple-sparing mastectomies for analysis. The overall pooled complication rate was 22 percent, the nipple necrosis rate was 7 percent, the locoregional recurrence rate was 1.8 percent, and the distant metastasis rate was 2.2 percent. Comparing combined patient cohorts for two-stage expander to implant, one-stage direct to implant, and autologous reconstruction demonstrated overall complication rates of 52.8, 16.7, and 23.7 percent and nipple necrosis rates of 4.5, 4.1, and 17.3 percent, respectively. Incision types were divided into five categories: radial, periareolar/circumareolar, inframammary, mastopexy, and transareolar, with nipple necrosis rates of 8.83, 17.81, 9.09, 4.76, and 81.82 percent, respectively
CONCLUSIONS
Nipple-sparing mastectomy appears to be an oncologically safe option for properly selected patients, with low rates of locoregional and distant metastasis. Overall complication and nipple necrosis rates are affected by incision location and reconstruction method. Randomized controlled trials are warranted to determine best incision and reconstructive methods.
CLINICAL QUESTION/LEVEL OF EVIDENCE
Therapeutic, IV.
Topics: Breast Neoplasms; Female; Humans; Mammaplasty; Mastectomy; Middle Aged; Nipples
PubMed: 23924650
DOI: 10.1097/PRS.0b013e3182a48b8a