The effects of breast size in unilateral postmastectomy breast reconstruction

Effects of breast size on breast reconstruction in BRCA mutation carriers and genetic high-risk patients after bilateral mastectomy

BACKGROUND

Women with genetic susceptibility to breast cancer and indication for bilateral mastectomy are more likely to undergo implant-based breast reconstruction (IBR) than autologous breast reconstruction (ABR), while the impact of breast size in this context is insufficiently studied. Ultimately, comparative data on IBR and different types of ABR beyond abdominal-based flaps in genetic susceptible women remain scarce. This study aimed to evaluate factors associated with ABR and the effects of breast size for bilateral reconstruction in high-risk patients.

METHODS

A 2.5-year retrospective study was conducted at a single institution including all genetic high-risk patients who underwent bilateral mastectomy and breast reconstruction. Patients were stratified into two groups based on the weight of the mastectomy specimen. Small breast sizes were defined by mastectomy weights below 400 g, and medium-to-large breasts by specimen weights above 400 g. Binary logistic regression was performed to assess variables predictive of ABR, followed by an analysis of the breast size-dependent reconstructive algorithm and its complication rates.

RESULTS

We included 71 patients with BRCA1/2 (97.2%), CHEK2 (1.4%), and PALB2 (1.4%) mutations in the study. Among those, 68 IBRs and 74 ABRs were performed. Increasing age, immediate reconstruction, and medium-to-large breast size were predictive of ABR compared to IBR (p < 0.05). In the IBR-group, the majority of preoperative small breasts received subpectoral implant placements (81.0%, p = 0.003), while prepectoral implants (53.9%, p = 0.003) were preferred in medium-to-large breasts. In the ABR-group, the deep inferior epigastric artery (DIEP) flap was the choice in the vast majority of cases with larger breasts (86.4%, p < 0.001), whereas the transverse myocutaneous gracilis (TMG) flap (46.7%, p < 0.001) and superior gluteal artery perforator (SGAP) flap (20.0%, p = 0.002) were only considered in small-breasted patients. No elevated incidence of overall complications with increasing breast size was found. However, patients with larger breasts were more likely to undergo elective revisions after IBR (p < 0.001) as well as ABR (p = 0.013). With regard to two-stage tissue expander reconstructions, high-risk patients with larger breast size revealed increased explantations (p = 0.043) and expander-related revisions requiring additional surgery (p = 0.003). The latter was significantly reduced by reduction mammoplasty prior to expander placement (p = 0.036).

CONCLUSIONS

The preoperative breast size of gene mutation carriers influences the postmastectomy reconstructive choice. TMG and SGAP flaps are suitable options for bilateral reconstruction of genetic susceptible patients with small breasts, while DIEP flaps are preferred in larger breast sizes. With increasing breast size an elevated risk for elective revisions after either IBR or ABR need to be considered. Women with medium-to-large breasts exhibit increased morbidity related to expansion and genetic high-risk patients may benefit from prior reduction mammoplasty.

Prepectoral Versus Subpectoral Implant-Based Reconstruction: How Do We Choose?

Aspects of a patient's lifestyle, their state of health, breast size, and mastectomy skin flap quality are factors that influence the suggested plane of dissection in implant-based breast reconstruction. This article aims to review developments in prosthetic breast reconstruction and provide recommendations to help providers choose whether prepectoral or subpectoral reconstruction in the best approach for each of their patients.

Single axillary incision reverse-order endoscopic nipple/skin-sparing mastectomy followed by subpectoral implant-based breast reconstruction: Technique, clinical outcomes, and aesthetic results from 88 preliminary procedures

BACKGROUND

Single axillary incision reverse-order endoscopic nipple-sparing mastectomy overcomes the limitations of conventional endoscopic nipple-sparing mastectomy application. We introduce this technique and report the preliminary results of this study.

METHODS

Patients who received single axillary incision reverse-order endoscopic nipple-/skin-sparing mastectomy from May 2020 to May 2022 were enrolled from a single institution. Data were analyzed to evaluate the safety and effectiveness of this technique. Patient-reported and surgeon-reported cosmetic outcomes were collected.

RESULTS

In total, 68 patients who underwent 88 single axillary incision reverse-order endoscopic nipple-/skin-sparing mastectomy combined with subpectoral implant-based breast reconstruction were enrolled in the current study. The overall complication rate was 10.3%. In total, 2.9% of patients suffered from major complications, and 5 (7.4%) experienced minor complications. Only 1 patient experienced partial nipple-areola complex necrosis. During a median follow-up time of 24 months, the locoregional recurrence and distant metastasis rate was both 1.6%. In the surgeon-reported cosmetic results, 92.1% of patients achieved good or excellent results. The mean SCAR-Q scores were 82.07 ± 8.86, and 85.3% evaluated their breasts as good or excellent. The mean overall cost was 5,670.4 ± 1,351.3 USD. The total mean operation time and maturity-stage mean operation time were 234.3 ± 80.4 and 172.55 ± 41.29 min, respectively. According to cumulative sum plot analysis, approximately 18 cases were needed for surgeons to decrease their operation time significantly and complication rate.

CONCLUSION

Single axillary incision reverse-order endoscopic nipple-sparing mastectomy is a safe, less expensive, and efficient surgical technique with reliable intermediate-term oncologic safety. For suitable candidates, the technique with subpectoral implant-based breast reconstruction can provide a good cosmetic outcome.

Smooth versus textured tissue expanders in breast reconstruction - A retrospective review of post-operative surgical site infections

BACKGROUND

Textured tissue expanders (TTEs) were introduced to limit migration and reduce capsular contracture, which were inherent to smooth tissue expanders (STEs). Previous reports suggest that textured devices have increased rates of bacterial contamination and biofilm formation in comparison with smooth devices. Recently, the relative increased association of anaplastic large cell lymphoma (ALCL) with textured versus smooth devices has led to increased adoption of smooth devices. The aim of our study is to evaluate the post-operative surgical site infection (SSI) rates of STEs versus TTEs.

METHODS

A retrospective case series was conducted at a single academic teaching hospital from April 2016 to December 2019. The primary outcome variable was the development of a post-operative SSI.

RESULTS

One hundred seventy-seven breasts underwent reconstruction with TTEs and 109 breasts underwent reconstruction with STE. In total, 54 SSIs were recorded (n = 34 TTE; n = 20 STE), with the majority of infections occurring within the first 30 post-operative days (TTE 65%, STE 70%). There was no statistically significant difference in overall post-operative infection rates between TTE and STE groups when broken down into the following time points: <30 day, 30-60 days, and >90 days (p = 0.924). There was no statistically significant difference between infection type (superficial vs. deep, p = 0.932), infection management (medical, surgical, or both, p = 0.409) or salvage results (p = 0.078) seen in STE versus TTE cohort. On multivariate analysis, seroma history was associated with SSI development (OR 3.18, p = 0.041).

CONCLUSION

There was no significant difference in the rate of post-operative SSI following breast reconstruction with STE relative to TTE.

Evaluation of the Number of Follow-up Surgical Procedures and Time Required for Delayed Breast Reconstruction by Clinical Risk Factors, Type of Oncological Therapy, and Reconstruction Approach

BACKGROUND

Breast reconstructive surgery is often a multistage process. The aim was to understand which factors might increase the number of follow-up surgeries and the length of time required to complete the reconstruction process.

METHODS

A cross-sectional analysis was performed. Clinical data of 110 patients who underwent delayed postmastectomy breast reconstruction with a 5-year examination period were reviewed retrospectively. Impact of clinical risk factors, oncological therapy, and reconstruction approach on the number of surgeries and the length of required time was analyzed. Mann-Whitney U test and Kruskal-Wallis rank sum test were used.

RESULTS

In patients undergoing perioperative hormone therapy, an average of 2.9 surgeries and length of 20.2 months were required compared to 2.3 surgeries and 14.0 months in patients without hormone therapy (P = 0.003; P = 0.005). Previous abdominal surgery was associated with an increased number of breast reconstruction stages of 3.1 per patient (P = 0.056) and a longer reconstruction time of 23.0 months (P = 0.050). Patients undergoing nipple reconstruction or implant revision required an increased number of surgeries (P < 0.001; P = 0.012) and a longer reconstruction time (P = 0.002; P < 0.001). Contralateral breast surgery and flap revision were associated only with an increased number of surgeries (P < 0.001; P < 0.001).

CONCLUSION

Perioperative hormone therapy was associated with a significantly higher number of surgeries and duration of time required to complete the reconstruction process. The highest increase in the number of surgeries was in patients with flap revision including anastomosis revision and necrectomy.

LEVEL OF EVIDENCE IV

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Analysis of factors that affect drainage volume after expander-based breast reconstruction

Background

Closed-suction drains are widely used in expander-based breast reconstruction. These drains are typically removed using a volume-based criterion. The drainage volume affects the hospital stay length and the recovery time. However, few studies have analyzed the factors that influence drainage volume after expander-based breast reconstruction.

Methods

We retrospectively analyzed data regarding daily drainage from patients who underwent expander-based breast reconstruction between April 2014 and January 2018 (159 patients, 176 expanders). Patient and operative factors were analyzed regarding their influence on total drainage volume and drain placement duration using univariate and multivariate analyses and analysis of variance.

Results

The mean total drainage volume was 1,210.77±611.44 mL. Univariate analysis showed correlations between total drainage volume and age (B=19.825, P<0.001), body weight (B=17.758, P<0.001), body mass index (B=51.817, P<0.001), and specimen weight (B=1.590, P<0.001). Diabetes history (P<0.001), expander type (P<0.001), and the surgical instrument used (P<0.001) also strongly influenced total drainage. The acellular dermal matrix type used did not affect total drainage (P=0.626). In the multivariate analysis, age (B=11.907, P=0.004), specimen weight (B=0.927, P<0.001), and expander type (B=593.728, P<0.001) were significant predictors of total drainage.

Conclusions

Our findings suggest that the total drainage and the duration of drain placement needed after expander-based breast reconstruction can be predicted using preoperative and intraoperative data. Patient age, specimen weight, and expander type are important predictors of drainage volume. Older patients, heavier specimens, and use of the Mentor rather than the Allergan expander corresponded to a greater total drainage volume and a longer duration of drain placement.

Risk Factors for Complications in Expander-Based Breast Reconstruction: Multivariate Analysis in Asian Patients

Background:

There have been many studies examining risk factors for complications in expander-based breast reconstruction after mastectomy, and some patient factors have been identified as risk factors. However, most of the previous studies were based on Caucasian patients.

Methods:

Asian patients who had a tissue expander placed for immediate breast reconstruction between January 2006 and December 2015 (363 patients and 371 expanders) were analyzed retrospectively. Univariate and multivariate analyses were performed to elucidate risk factors for complications.

Results:

The rate of skin necrosis was significantly higher in nipple-sparing mastectomy than in other types of mastectomies (12 patients among 107 patients, P = 0.001). The weight of the resected specimen was significantly higher in the group with complications than in the group without complications (444 g compared with 363 g, P = 0.027). Other factors (age, body mass index, smoking, expander type, preoperative chemotherapy, axillary dissection) had no significant effect on complications. Multivariate analysis with a logistic regression showed that a large breast (over 500 g) was the only significant risk factor for complications, with an odds ratio of 3.20 and a 95% confidence interval of 1.33–7.54 (P = 0.010).

Conclusion:

In this series of Asian patients, breast size, rather than body mass index, is the most important predictor for complications in expander-based breast reconstruction.

Preoperative breast size affects reconstruction status following mastectomy

Much research has been devoted to why women choose not to be reconstructed following mastectomy. The effect of breast size has not been well explored. The authors aimed to assess the relationship between breast size and reconstructive choices. A single-center retrospective review of women undergoing mastectomy between 2011 and 2014 was performed. Demographics, surgical variables, and reconstruction decisions were analyzed using t tests, Mann-Whitney U tests, and chi-squared tests. Significant (P < .05) variables were included in a multivariable logistic regression model. About 610 patients were analyzed. The median mastectomy specimen weight was 572 g (62-5230 g), which did not correlate with BMI (P = .44). Women who underwent reconstruction had lighter mastectomy specimens, averaging 643 vs 848 g (P < .0001). A regression controlling for ethnicity, insurance status, number of comorbidities, age at mastectomy, cancer stage, BMI, specimen weight, and mastectomy laterality was constructed. Lower specimen weight (P = .005), lower cancer stage (P = .008), bilateral mastectomy (P = .042), and younger age at mastectomy (P < .0001) were significantly associated with reconstruction. Women with larger breasts were less likely to be reconstructed regardless of their BMI and comorbidities. Larger breasted women may be considered worse prosthetic reconstruction candidates due to increased complications and suboptimal aesthetic outcomes but may find the increased invasiveness and recovery of autologous reconstruction an unattractive alternative. Furthermore, it is possible that surgeons may be less supportive of breast reconstruction for larger breasted women if there are concerns about safety or the aesthetic quality of the result. In the future, qualitative research must be done to determine why more larger breasted women choose not to be reconstructed as well as develop better ways to increase their reconstructive options.

Combined TRAM flap with latissimus dorsi myocutaneous flap for reconstruction of a large breast post-radiation induced necrosis

Radiation therapy is a critical component of breast cancer management following breast-conserving surgery. Post-radiation sequelae are greater in women with larger breasts, given the need for higher doses and dosing heterogeneity. The goal of breast reconstruction post-mastectomy is to improve the quality of life and add no more health risk. The optimal reconstruction should make the patient feel as natural as possible. Reconstruction of a large-sized breast with aesthetically satisfactory outcome poses a challenge to the breast surgeon. The breast of most Egyptian women is of a large volume with variable degrees of ptosis, thus it is difficult to reconstruct such a large-ptotic breast using an implant. We describe the successful reconstruction of a large-sized breast after radiation-induced necrosis using a combined transverse myocutaneous rectus abdominis flap and latissimus dorsi myocutaneous flap reconstruction. The combined use of both flaps offered a more natural breast reconstruction and avoided the use of any implants.

Patient Satisfaction with Implant Based Breast Reconstruction Associated with Implant Volume and Mastectomy Specimen Weight Ratio

Purpose

Breast volume assessment is one of the most important steps during implant-based breast reconstruction because it is critical in selecting implant size. According to previous studies, there is a close relationship between the mastectomy specimen weight and resected breast volume. The aim of this study was to evaluate long-term patient satisfaction with implant-based breast reconstruction guided by the ratio of implant volume to mastectomy specimen weight. In doing so, we describe the ideal ratio for patient satisfaction.

Methods

A total of 84 patients who underwent implant-based breast reconstruction for breast cancer were included in this study. The patients were grouped by the ratio of implant size to mastectomy specimen weight (group 1, <65%; group 2, 65%–75%; and group 3, >75%). Outcome analysis was performed using a questionnaire of patient satisfaction and the desired implant size.

Results

Patient satisfaction scores concerning the postoperative body image, size, and position of the reconstructed breast were significantly higher in group 2. The average ratio of the ideal implant volume to mastectomy specimen weight for each group was 71.9% (range, 54.5%–96.7%), with the differences across the three groups being not significant (p=0.244).

Conclusion

Since there is an increase in breast reconstruction, selecting the appropriate breast implant is undoubtedly important. Our novel technique using the ratio of implant volume to mastectomy specimen weight provides physicians a firm guide to intraoperative selection of the proper implant in reconstructive breast surgery.

Breast Reconstruction Following Cancer Treatment

BACKGROUND

About 8000 breast reconstructions after mastectomy are per - formed in Germany each year. It has become more difficult to advise patients because of the wide variety of heterologous and autologous techniques that are now available and because of changes in the recommendations about radiotherapy.

METHODS

This article is based on a review of pertinent articles (2005-2014) that were retrieved by a selective search employing the search terms "mastectomy" and "breast reconstruction."

RESULTS

The goal of reconstruction is to achieve an oncologically safe and aestically satisfactory result for the patient over the long term. Heterologous, i.e., implant-based, breast reconstruction (IBR) and autologous breast reconstruction (ABR) are complementary techniques. Immediate reconstruction preserves the skin of the breast and its natural form and prevents the psychological trauma associated with mastectomy. If post-mastectomy radiotherapy (PMRT) is not indicated, implant-based reconstruction with or without a net/acellular dermal matrix (ADM) is a common option. Complications such as seroma formation, infection, and explantation are significantly more common when an ADM is used (15.3% vs. 5.4% ). If PMRT is performed, then the complication rate of implant-based breast reconstruction is 1 to 48% ; in particular, Baker grade III/IV capsular fibrosis occurs in 7 to 22% of patients, and the prosthesis must be explanted in 9 to 41% . Primary or, preferably, secondary autologous reconstruction is an alternative. The results of ABR are more stable over the long term, but the operation is markedly more complex. Autologous breast reconstruction after PMRT does not increase the risk of serious complications (20.5% vs. 17.9% without radiotherapy).

CONCLUSION

No randomized controlled trials have yet been conducted to compare the reconstructive techniques with each other. If radiotherapy will not be performed, immediate reconstruction with an implant is recommended. On the other hand, if post-mastectomy radiotherapy is indicated, then secondary autologous breast reconstruction is the procedure of choice. Future studies should address patients' quality of life and the long-term aesthetic results after breast reconstruction.

Predictive Factors for Drainage Volume after Expander-based Breast Reconstruction

BACKGROUND

Closed suction drains are widely used in breast reconstruction, and the drains are removed based on a volume criterion. However, to the best of our knowledge, there has been no study analyzing predictive factors for drainage volume after breast reconstruction.

METHODS

Data of daily drainage in cases with expander-based breast reconstruction between February 2013 and March 2015 (131 patients and 134 expanders) were retrospectively analyzed. Patient factors and operative factors were examined for their influences on total drainage using univariate and multivariate analyses.

RESULTS

The total drainage was 557.3 ± 359.7 mL. A strong correlation was observed between total drainage and duration of drains (correlation coefficient, 0.908). Operative factors, such as mastectomy type, expander type, operative time, and blood loss, did not affect the total drainage. Patients with axillary lymph node dissection showed a higher total volume of drainage (P < 0.001). The weight of the resected specimen, body weight, and breast volume calculated preoperatively showed a strong correlation with total drainage (correlation coefficients, 0.454, 0.388, and 0.345, respectively). In multiple regression analysis with preoperative data, age (P = 0.008), body weight (P = 0.018), and scheduled axillary dissection (P < 0.001) were significant predictive factors for total drainage. Among postoperative data, age (P = 0.003), axillary dissection (P = 0.032), and weight of resected specimen (P = 0.013) were significant predictors.

CONCLUSIONS

Based on preoperative and/or postoperative information, plastic surgeons can predict the total drainage and duration of drains after expander-based breast reconstruction. Age, breast mass, and axillary lymph node dissection are important factors for this prediction.

Mastectomy Weight and Tissue Expander Volume Predict Necrosis and Increased Costs Associated with Breast Reconstruction

Introduction:

Impaired vascular perfusion in tissue expander (TE) breast reconstruction leads to mastectomy skin necrosis. We investigated factors and costs associated with skin necrosis in postmastectomy breast reconstruction.

Methods:

Retrospective review of 169 women with immediate TE placement following mastectomy between May 1, 2009 and May 31, 2013 was performed. Patient demographics, comorbidities, intraoperative, and postoperative outcomes were collected. Logistic regression analysis on individual variables was performed to determine the effects of tissue expander fill volume and mastectomy specimen weight on skin necrosis. Billing data was obtained to determine the financial burden associated with necrosis.

Results:

This study included 253 breast reconstructions with immediate TE placement from 169 women. Skin necrosis occurred in 20 flaps for 15 patients (8.9%). Patients with hypertension had 8 times higher odds of skin necrosis [odd ratio (OR), 8.10, P < 0.001]. Patients with TE intraoperative fill volumes >300 cm³ had 10 times higher odds of skin necrosis (OR, 10.66, P =0.010). Volumes >400 cm³ had 15 times higher odds of skin necrosis (OR, 15.56, P = 0.002). Mastectomy specimen weight was correlated with skin necrosis. Specimens >500 g had 10 times higher odds of necrosis and specimens >1000 g had 18 times higher odds of necrosis (OR, 10.03 and OR, 18.43; P =0.003 and P <0.001, respectively). Mastectomy skin necrosis was associated with a 50% increased inpatient charge.

Conclusion:

Mastectomy flap necrosis is associated with HTN, larger TE volumes and mastectomy specimen weights, resulting in increased inpatient charges. Conservative TE volumes should be considered for patients with hypertension and larger mastectomy specimens.