Microscopic anatomy within the nipple: implications for nipple-sparing mastectomy

How Protective are Nipple-Sparing Prophylactic Mastectomies in BRCA1 and BRCA2 Mutation Carriers?

BACKGROUND

Nipple-sparing mastectomy (NSM) is now routinely offered to BRCA mutation carriers for risk reduction. We assessed the rates of ipsilateral cancer events after prophylactic and therapeutic NSM in BRCA1 and BRCA2 mutation carriers.

METHODS

BRCA1 and BRCA2 mutation carriers undergoing NSM from October 2007 to June 2019 were identified in a single-institution prospective database, with variants of unknown significance being excluded. Patient, tumor, and outcomes data were collected. Follow-up analysis was by cumulative breast-years (total years of follow-up of each breast) and woman-years (total years of follow-up of each woman).

RESULTS

Overall, 307 BRCA1 and BRCA2 mutation carriers (160 BRCA1, mean age 41.4 years [range 21-65]; and 147 BRCA2, mean age 43.8 years [range 23-65]) underwent 607 NSMs, with a median follow-up of 42 months (range 1-143). 388 bilateral prophylactic NSMs had 744 cumulative woman-years of follow-up, with no new cancers seen (< 0.0013 new cancers per woman-years); 251 BRCA1 prophylactic NSMs had 1034 cumulative breast-years of follow-up, with no new ipsilateral cancers seen (< 0.0010 per breast-year); 66 BRCA1 therapeutic NSMs had 328 cumulative breast-years of follow-up, with one ipsilateral cancer recurrence not directly involving the nipple or areola (0.0030 per breast-year); 237 BRCA2 prophylactic NSMs had 926 cumulative breast-years of follow-up, with no new ipsilateral cancers seen (< 0.0011 per breast-year); and 53 BRCA2 therapeutic NSMs had 239 cumulative breast-years of follow-up, with two ipsilateral recurrent cancers, neither of which directly involved the nipple or areola (0.0084 per breast-year).

CONCLUSIONS

The risk of new ipsilateral breast cancers is extremely low after NSM in BRCA1 and BRCA2 mutation carriers. NSM is an effective risk-reducing strategy for BRCA gene mutations.

Ischemic Complications After Bilateral Nipple-sparing Mastectomy and Implant-based Reconstruction: A Critical Analysis

PURPOSE

Nipple-sparing mastectomy (NSM) has a higher incidence of mastectomy skin flap necrosis (MSFN) than skin-sparing mastectomy. The purpose of this study is to analyze predisposing factors for nipple and skin necrosis after bilateral NSM with immediate implant reconstruction.

METHODS

Sixty-two consecutive patients (124 breasts) from a single breast/plastic surgeon underwent bilateral NSM with immediate implant-based breast reconstruction were included. Factors influencing MSFN were analyzed.

RESULTS

The mean age was 45.7 years, and mean body mass index was 22.9. Reconstructive methods were as follows: tissue expander (TE), 76 (61.3%); and direct to implant, 48 (38.7%). Mastectomy skin flap necrosis occurred in 39 (31.5%) breasts, nipple necrosis 38 and skin flap necrosis 19. Thirty-seven breasts healed uneventfully, and 2 (1.6%) required reoperation. Cancer pathology, mastectomy weight greater than 279 g, TE reconstruction, and nipple-notch (N-N) distance greater than 23 cm were predictive of nipple necrosis on univariate analysis. The mean mastectomy weight (380.1 g vs 220.7 g, P < 0.0001), N-N distance greater than 23 cm (30 vs 0, P < 0.0001), and mean implant size (490 cm3 vs 373 cm3, P < 0.0001) were greater in the TE group. On logistic regression model controlling for all significant variables, predictors of MSFN were as follows: diagnosis of cancer (odds ratio [OR], 3.37; 95% confidence interval [CI], 1.41-8.03; P = 0.006), TE reconstruction (OR, 2.87; 95% CI, 1.03-8.03; P = 0.04), and N-N distance (OR, 1.31; 95% CI, 1.03-1.66; P = 0.03).

CONCLUSIONS

Mastectomy skin flap necrosis after NSM and implant reconstruction is common. In this series, only 2 (1.6%) cases required surgical intervention with no implant loss. Treatment of breast cancer, TE reconstruction, and increasing N-N notch distance were positive predictors of MSFN.

Breast Reconstruction and Nipple-Sparing Mastectomy: Technical Modifications and Their Outcomes Over Time at an Academic Breast Center

BACKGROUND

Superior aesthetic outcomes can be achieved with mastectomy techniques that maximize breast envelope preservation and maintain the nipple-areolar complex. This is the impetus for the popularization of the nipple-sparing mastectomy (NSM). Nipple-sparing mastectomy is a challenging procedure due to potential ischemia of the mastectomy flap (which includes the nipple-areolar complex) and the risk of incomplete oncologic resection. We review our experience with NSM, identify technique modifications used over time, and evaluate reconstructive outcomes of NSM and its modifications.

METHODS

A retrospective review of consecutive patients with NSM and breast reconstruction over an 8-year period was completed.

RESULTS

Fifty-five patients underwent 95 NSMs. Indications included invasive and in situ cancer, atypical ductal hyperplasia, and risk reduction. In the first 4 years of experience, the most frequently used NSM incision was radial (lateral) whereas use of a variety of incision patterns was noted in the second 4 years. Overall NSM and breast reconstruction complication rate for the entire study period was 50.9% and included a full-thickness mastectomy skin flap necrosis/nipple necrosis rate of 8.4%. In situ cancer of the nipple was identified in 3.2% of the patients, and 1 patient had locoregional recurrence. Overall complication rate was lower in the second 4 years of experience with NSM and reconstruction. One third of the patients underwent intraoperative fluorescent angiography (FA) to assess mastectomy skin perfusion before reconstruction start. Of the patients who had FA due to perfusion concerns, more than 70% of studies demonstrated poor perfusion and 83.3% of these patients had reconstruction delayed based on these results. Immediate, implant-based reconstruction was performed most commonly. An average of 2.66 procedures were required to achieve reconstruction completion, and 92.4% of the patients who sought reconstruction achieved completion.

CONCLUSIONS

At our institution, NSM use is increasing, NSM incision pattern types used are expanding, and complication rates are decreasing. Immediate, implant-based reconstruction is most commonly used in combination with NSM at our institution. Fluorescent angiography is used to assess mastectomy skin perfusion and likely limits mastectomy complication effects on reconstruction. Despite the occurrence of complications, most patients will complete the breast reconstruction process.

Oncoplastic breast surgery: A guide to good practice

Oncoplastic Breast Surgery has become standard of care in the management of Breast Cancer patients. These guidelines written by an Expert Advisory Group; convened by the Association of Breast Surgery (ABS) and the British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS), are designed to provide all members of the breast cancer multidisciplinary team (MDT) with guidance on the best breast surgical oncoplastic and reconstructive practice at each stage of a patient's journey, based on current evidence. It is hoped they will also be of benefit to the wide range of professionals and service commissioners who are involved in this area of clinical practice.

Breast reconstruction after complications following breast augmentation with massive filler injections

INTRODUCTION

Breast filler injections are less commonly used due to their associated complications, such as pain and foreign body reactions. Yet, these fillers are often administered illegally, resulting in aesthetic or life-threatening complications. These are treated by removing the foreign material, and the breasts are reconstructed using silicone implants or autologous tissue/fat injection.

PATIENT CONCERNS

Case 1. A 45-year-old woman with polyacrylamide gel injections in both breasts visited our clinic for breast pain and tenderness. Grade I ptosis was observed in each breast, without skin necrosis and discoloration. Case 2. A 51-year-old woman, with unknown breast filler injections, visited our clinic for painful masses. Intraoperatively, massive amounts of foreign material had severely infiltrated the nearby tissues; thus, an immediate breast reconstruction could not be performed. Three months later, severe deformities including shrinkage and irregular breast skin surfaces were observed.

DIAGNOSIS

Case 1. Multiple cystic lesions, fluid collection in the retromammary spaces, and diffuse infiltration were observed on mammography, computed tomography, and ultrasonography. Case 2. Multiple cystic lesions, calcified areas, and diffuse infiltrations in the axillae and retromammary spaces were observed on mammography, computed tomography, and ultrasonography.

INTERVENTIONS

Case 1. The foreign material was removed and the breasts were reconstructed using silicone implants into subpectoral pocket with acellular dermal matrices (Alloderm, Lipocell Corporation). Case 2. A delayed reconstruction was undertaken using silicone implants covered by latissimus dorsi muscle flaps, 3 months after the foreign material removal.

OUTCOMES

Case 1. The foreign material was removed and there were no complications such as foreign body reaction, capsular contracture. Ptosis was corrected and both breasts were symmetric with proper projection. Case 2. Residual foreign material was removed and there were no complications such capsular contracture, implant malposition.

CONCLUSION

Massive injections of foreign materials into the breast can cause severe infiltration and associated foreign body reactions. By a near-complete removal of the foreign materials and breast reconstruction using silicone implants, we achieved satisfactory results, without complications such as wound disruption, capsular contracture, and implant malposition.

Nipple-sparing mastectomy for early breast cancer: the importance of intraoperative evaluation of retroareolar margins and intra-nipple duct removal

Background

Nipple-sparing mastectomy (NSM) is increasingly performed for breast cancer (BC) treatment. To ensure local control with this procedure, it is important to obtain clear surgical margins. Here, we aimed to estimate the confidence in intraoperative evaluation of the retroareolar margin (IERM) and the necessity of removing the intra-nipple ducts.

Methods

In this retrospective cohort study, we evaluated 224 BC (infiltrating carcinoma 178, ductal carcinoma in situ 46) patients, who underwent NSM. IERM was determined via cytology and frozen sections. Following gland removal, the intra-nipple ducts were excised and embedded in paraffin for analysis. The retroareolar tissue was also paraffin-embedded and reanalyzed for definitive evaluation of retroareolar margins (DERM). The IERM predictive capacity in relation to DERM and the frequency of intra-nipple duct involvement were estimated.

Results

IERM classified the sub-nipple areolar complex area as cancer-free in 219 cases (97.8%). The condition of clear retroareolar margin was confirmed by DERM in 216 cases (98.6%). The IERM accuracy was estimated as 98.6%. Ductal carcinoma in situ was detected in intra-nipple ducts using paraffin sections in 1.8% of the cases, despite clear IERM (4/219).

Conclusions

In conclusion, IERM affords high accuracy and its results are suitable to manage the nipple-areolar complex. Nevertheless, some patients may retain residual disease in the intra-nipple ducts; thus, these ducts should ideally be removed during NSM.

Nipple-Sparing Mastectomy Long-Term Outcomes: Early and Late Complications

Background and Objectives: The surgical choice treatment of the breast cancer mostly depends on the stage of the disease. In the last years, breast cancer surgery has moved from being destructive to being more respectful of the anatomical and physiological integrity of the gland. The aim of the breast surgery should be finalized to obtain the best aesthetic and functional results, respecting the principles of oncologic radicality. The present study is a retrospective analysis aimed to evaluate the long-term outcomes of a conservative technique like the nipple-sparing mastectomy. Materials and Methods: We observed 894 patients with a median age of 47.5 years old, underwent nipple-sparing mastectomy between 2002–2017. The data acquired include population and tumor characteristics, patient reconstructive outcomes, including locoregional, regional, and distant metastases; other variables, among nipple–areola complex necrosis and infection were collected. Results: The complications detected were considered as “early” within 1 month later the nipple-sparing mastectomy or “late” after this time. The overall complications rate (early and late) and the overall survival and the relapses detected by this study were comparable with those reported in the literature. In order to identify factors that correlate with complications, either early or later, it has been processed an evaluation of the univariate analysis showing adjuvant chemotherapy as the only predictive factor for late complications, while we encountered no predictors for early complications. Conclusions: The present study adds to the data already present in literature, demonstrating that the nipple-sparing mastectomy is a safe procedure, providing good oncological and aesthetic results in patients carefully selected.

Collaboration between breast and reconstructive surgery in optimizing outcomes for women with breast cancer

Performing successful breast reconstruction after mastectomy requires communication and collaboration between the breast and reconstruction surgery teams. This allows for oncologic safety while providing esthetic and functional reconstruction. In this article, we discuss the numerous techniques we have adopted successfully into our breast reconstructive practice that were possible due to this collaboration including prophylactic lymphaticovenous bypass (LVB), tumor ultrasound-guided incision (TUGI), esthetic closure in patients not eligible or desiring reconstruction, nerve identification at time of mastectomy to allow for sensate reconstruction, and the prevention of chronic pain and strategic oncoplasty.

Nipple-Sparing Mastectomy and Prepectoral Implant/Acellular Dermal Matrix Wrap Reconstruction in Large Ptotic Breasts

Nipple-sparing mastectomy (NSM) with simultaneous prepectoral direct to implant reconstruction and acellular dermal matrix (ADM) is increasingly offered to patients opting for prophylactic or therapeutic mastectomies. The recent introduction of prepectoral implant/ADM in the armamentarium of breast reconstruction has proven to reduce pain and animation deformity. Despite this promising method, patients with macromastia and ptotic breasts remain a challenging group to treat. More often they would require secondary corrective procedures and can experience high failure rate and unsatisfactory outcomes. The authors present their experience in utilizing a bipedicled nipple-areola complex dermal flap through Wise pattern to achieve a successful NSM with prepectoral implant/ADM (Braxon) wrap (IBW) as a single stage in patients with large ptotic breasts. Patients seeking NSM with large ptotic breasts were included in the study in the period between 2016 and 2018. They were offered a single-stage Wise pattern NSM and immediate prepectoral IBW breast reconstruction. The technique and outcomes were recorded. Sixteen reconstructions were performed in 8 women with a median age of 32 years (range, 27-50 years) and a median body mass index of 32 kg/m² (range, 29-39 kg/m²). The resected breasts weight ranged from 750 to 1,600 g (median, 890 g). All procedures were completed successfully with no nipple-areola complex necrosis or failure experienced during the follow-up period (range, 3-24 months) with all patients reported excellent satisfaction. The authors' results demonstrate that this technique could be safely planned for NSM in large ptotic breasts with excellent durable outcomes.

[Effectiveness of endoscopic nipple-sparing mastectomy combined with immediate breast reconstruction via axillary incision]

Objective

To introduce an surgical technique of endoscopic nipple-sparing mastectomy (NSM) combined with immediate breast reconstruction through simple single-port access that placed in axillary incision.

Methods

Between January 2017 and February 2018, 15 female patients with breast cancer (stageⅠ in 5 cases and stage Ⅱ in 10 cases) were treated with endoscopic NSM combined with immediate breast reconstruction through simple single-port access that placed in axillary incision. They were 27-45 years old (mean, 37.5 years). The disease duration ranged from 1 to 24 months (mean, 8 months). The tumor located at the left breast in 8 cases and at the right breast in 7 cases. The diameter of tumor ranged from 1.5 to 3.0 cm (mean, 2.6 cm). The distance between tumor and nipple was 1.8-4.0 cm (mean, 2.3 cm).

Results

After operation, the nipple epidermal necrosis occurred in 1 case, and subcutaneous effusion in 1 case. No subcutaneous emphysema or skin flap necrosis occurred. Postoperative pathological examination showed that 1 case was nipple involvement and was treated with nipple resection. All patients were followed up 7-17 months (mean, 11 months). According to the Harris assessment criteria for appearance of reconstructed breast, there were 4 cases of excellent, 10 cases of good, and 1 case of poor. No tumor recurrence or metastasis occurred during follow-up.

Conclusion

It is a safe and feasible method of endoscopic NSM combined with immediate breast reconstruction through simple single-port access that placed in axillary incision, and can obtain good cosmetic results. It is a new option to breast reconstruction.

Oncoplastic breast surgery techniques - a new look at surgical treatment of breast cancer

Breast cancer is the most common cancer among Polish women [1], thus, the problem of surgical treatment of breasts, especially with regard to conserving and/or reconstruction surgery, is extensively discussed. Currently, in Poland, efforts are made to increase the number of oncologic and reconstructive breast centers which offer specialized treatment of this cancer, the so-called ‘Breast Units’ [1]. This paper analyzes methods of reconstructions, discusses the techniques used in particular types of surgeries and additionally informs the reader of the oncological aspects of the procedures. Based on literature, statistical data of breast reconstructions from Poland and the world are presented. Moreover, complications and psychological aspects of mammary gland surgery are dealt with, and the aesthetic effects of breast reconstructions are discussed. To support of our findings, we also present selected clinical cases from the oncological and reconstructive point of view.

Nipple-Sparing Mastectomy with Primary Implant Reconstruction: Surgical and Oncological Outcome of 435 Breast Cancer Patients

Background

This study aimed to examine the incidence of surgical complications associated with nipple-sparing mastectomy (NSM) with primary implant reconstruction, analyze risk factors for early and late surgical complications of NSM, and determine the incidence of local recurrences and the safety of sparing the nipple-areola complex (NAC).

Methods

This retrospective cohort study included 435 patients with 441 NSM procedures over a period of 9 years (2004-2012). All surgical complications and the oncological outcome were recorded during follow-up.

Results

The most common early surgical complication was skin flap ischemia/necrosis (26 patients, 5.9%). Prosthesis explantation due to complications was carried out in 11 (2.5%) cases. Neoadjuvant chemotherapy, implant size >500 ml, diabetes mellitus, body mass index > 25 kg/m², and incisions other than lateral were risk factors for early complications (p < 0.001). The NAC excision rate was 5.4% (24 cases) due to confirmed presence of cancer cells in the subareolar tissue. Capsular contracture as a late complication occurred in 33 (7.48%) cases. Local relapse occurred in 32 (7.3%) patients. Distant metastases were diagnosed in 68 (15.6%) patients, and 53 (12.2%) patients died during the follow-up period.

Conclusions

NSM with immediate implant reconstruction has an acceptable morbidity rate and is an oncologically and surgically appropriate treatment for most women requiring mastectomy.

Nipple sparing mastectomy techniques: a literature review and an inframammary technique

Nipple sparing mastectomy (NSM) has quickly become an accepted technique for patients with selected cancers and for risk reducing surgery. Much of its surgical acceptance over the last decade has been based on the low risk of nipple areolar complex (NAC) occurrence in breast cancer patients. Improved patient satisfaction due to improved cosmetic outcomes with reconstruction have also driven its popularity. We reviewed current English journals to determine the NSM techniques which achieve the lowest complications, best outcomes, and best patient satisfaction. We researched studies showing reductions in complications with improved surgical techniques and patient selection which have been implicated in improved results. In the studies reviewed, incision placement, away from the nipple, resulted in the lowest rates of ischemic nipple complications and the best cosmetic outcomes. The effect of other factors such as surgeon experience and thickness of skin flap development were more difficult to prove. Leaving a 2-3 mm rim of tissue around the nipple bundle was shown to help preserve the nipple vascularity. Lower complication rates with improved outcomes and patient satisfaction were reported in the literature in patients with B or smaller cup sizes, non-smokers, and patients with lower body mass index (BMI). Incision placement, away from the nipple, with preservation of a 2-3 mm rim of tissue around the nipple bundle along with careful patient selection were the most significant variables reviewed which helped to lower complications rates of NSM. Coordinated surgical planning with the breast and plastic surgeons to determine the best surgical approach for each individual patient is necessary to obtain the best results. Although short-term oncologic follow-up seems to be acceptable, longer follow-up will still be needed to define the best breast cancer surgical candidates for the nipple sparing approach.

Nipple sparing mastectomy and direct to implant breast reconstruction, validation of the safe procedure through the use of laser assisted indocyanine green fluorescent angiography

Background

Nipple sparing mastectomy (NSM) is a psychologically effective and oncological safe procedure followed by immediate breast reconstruction.

Methods

Between January 2015 and September 2015 the authors conducted a retrospective review of 40 patients divided into two groups depending on breast volume and weight of mastectomy: group A, 20 patients with small breast; group B, 20 patients with medium breast for nipple sparing mastectomy and direct to implant (DTI) breast reconstruction using strict patient selection and a standardized surgical technique. The nipple areola complex/flap viability were analysed intraoperatively through the use of laser assisted indocyanine green (ICG) fluorescent angiography.

Results

A total of 44 procedures were followed-up for 24 months. Nineteen patients were assisted in DTI breast reconstruction by acellular dermal matrix (ADM) for inferior/lateral part of the implant coverage. Encouraging results are presented with a unique case of implant failure.

Conclusions

We report our retrospective experience corroborated by intraoperative laser assisted ICG fluorescent angiography to demonstrate the safety and reliability of the oncoplastic procedure proposed. We also advocate the central role of oncoplastic surgeon as "one man band" to manage breast cancer from the oncological procedure to the breast reconstruction.

Overview of indications for nipple sparing mastectomy

The introduction of more targeted systemic therapies, better screening modalities with earlier diagnosis and dramatically improved reconstructive techniques has allowed more minimally invasive approaches to breast surgery. The recent introduction of nipple sparing mastectomy (NSM) has dramatically improved the cosmetic outcomes and quality of life (QoL) for patients undergoing mastectomy. This technique involves preservation of both the skin envelope including the nipple areolar complex commonly through a barely visible inframammary skin incision followed by immediate breast reconstruction. An ideal candidate includes women with small breasts, absence of ptosis, low BMI and not actively smoking. High risk patients include those with radiation treatment, active smokers, macromastia, high BMI >30 kg/m², grade 2 or 3 ptosis and active smokers. There are several new techniques to approach complex high risk patients which have expanded the candidates for NSM.

Evidence based outcomes of the American Society of Breast Surgeons Nipple Sparing Mastectomy Registry

Background

The American Society of Breast Surgeons (ASBrS) Nipple Sparing Mastectomy Registry (NSMR) is a prospective, non-randomized, IRB approved, multi-institutional registry. The purpose of this Registry is to provide a large, prospective, non-randomized database of patient characteristics, tumor characteristics, surgical technique, and outcome (both aesthetic and oncologic) of the nipple sparing mastectomy (NSM).

Methods

Data is entered into the ASBrS NSMR, housed within the Mastery of Surgery Program, after patients consent to participation. Each investigator routinely offers NSM in their practice has obtained IRB approval and completed forms of agreement to participate in the ASBrS NSMR.

Results

This data set represents a total of 1,935 NSMs performed on 1,170 patients by 98 investigators from 70 institutions/sites. Of the 1,935 NSMs: 833 were performed for an indication of cancer [594 invasive carcinoma and 239 for ductal carcinoma in situ (DCIS)] and 1,102 were prophylactic. Of the 1,170 total patients, 352 underwent a unilateral and 818 underwent a bilateral NSM. Recurrence at a mean follow-up of 31 months/median follow-up of 27 months, with a range of 9.7 to 58.3 months since surgery was 1.4% with no recurrences at the nipple or nipple areola complex (NAC). Cancer occurrence (0.3%) also did not involve the nipple/NAC. Overall patient satisfaction of excellent/good: 94.9% and overall cosmesis (surgeon rated) of excellent/good was 96.4%. Overall infection rates included flap infection of 4.4%, NAC complication rate of 4.5% (defined as necrosis/other or ischemia/epidermolysis requiring surgery), and a 10% rate of NAC epidermolysis with full recovery.

Conclusions

NSMs were performed on breasts with a variety of sizes and degrees of ptosis, via multiple incisions, dissection and reconstruction techniques with low complication rates and high patient satisfaction and surgeon rated cosmesis.

Outcome Evaluation after 2023 Nipple-Sparing Mastectomies: Our Experience

BACKGROUND

Although quadrantectomy and lumpectomy help diminish the psychological and physical devastation inflicted, mastectomy is still elected in 20 to 30 percent of breast cancers. Although initially inciting controversy over heightened risk of local recurrences, recent studies maintain that nipple-sparing mastectomy can be used in any patient qualifying for total mastectomy and also improves aesthetic and psychologic outcomes. The manner in which mastectomy influences reconstructive implant outcomes has been documented by several groups. This report details the authors' experience performing nipple-sparing mastectomy with immediate implant-based breast reconstruction, focusing attention on patient characteristics and aspects of surgical mastectomy that influence reconstruction outcomes. The aim of the study was to examine various issues, such as surgical access, mode of tissue dissection, and flap thickness, clearly linked to development of complications and poor results.

METHODS

A retrospective study was conducted, analyzing patients with breast cancer. An external three-surgeon panel served to generate average scores for predefined parameters. Based on total scores, outcomes were designated excellent, good, moderate, or poor.

RESULTS

The authors' cohort included 1647 patients. Overall, 2023 nipple-sparing mastectomies were performed, including bilateral procedures in 376 patients. After a minimum follow-up period of 12 months, the authors' cohort was stratified by scored outcomes. Significant impact of body mass index, skin incision, flap thickness, and grade of ptosis has been demonstrated.

CONCLUSIONS

The authors' data suggest that proper patient selection and well-executed operations are mandatory to limit complications. They also indicate that aesthetic outcome is clearly dependent on surgical proficiency and some patient characteristics.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

A Study of the Growth Patterns of Breast Carcinoma Using 3D Reconstruction: A Pilot Study

Lumpectomy with microscopically clear margins is a safe and effective approach for surgical management of breast carcinoma. Margins are positive for tumor in 18-50% of lumpectomies, as it is not possible to accurately determine the shape or microscopic borders of a tumor preoperatively or intraoperatively. We examined the 3D microanatomy and growth patterns of common breast carcinoma subtypes to provide guidance for lumpectomy surgery. Prospective consent was obtained for the use of excess tissue from patients undergoing lumpectomy or mastectomy for breast carcinoma. Tissue blocks from nine breast carcinomas were serially sectioned. Hematoxylin and eosin-stained slides at 100 μm intervals were scanned using a Nanozoomer (Hamamatsu, Japan) microscopic-resolution scanner. Three-dimensional reconstructions of tumors were created from scanned images using Reconstruct, open-access software. Breast carcinoma subtypes demonstrated characteristic growth patterns within breast tissue, which may have implications for lumpectomy surgery. Invasive ductal carcinomas showed a spherical shape, with a spiculated surface representing tumor cells infiltrating into surrounding parenchyma. Ductal carcinoma in situ appeared to spread along the duct system, creating dilated, tortuous, tumor-filled ducts. The invasive lobular carcinomas examined had a haphazard, linear, infiltrative growth pattern, different from the shape seen in ductal carcinomas. Our preliminary work suggests that invasive ductal and invasive lobular carcinomas appear to have distinct growth patterns in three dimensions and ductal carcinoma in situ appears to grow in a linear fashion along the duct network. The microanatomy studies described have the potential to guide refinements in breast lumpectomy technique.

Surgical decision making in conservative mastectomies

We present some clinical advice to drive the decision process in performing conservative mastectomies. Several factors are taken into consideration to indicate these techniques. First of all, we need to identify patients who need a mastectomy due to the extension of the disease. In this case we suggest assessing patients anthropometric characteristics (breast volume-ptosis), and personal preferences regarding the extension of surgical treatment. Small, medium size, without ptosis or with moderate ptosis can be better served by standard nipple-sparing mastectomy. Large and ptotic breast can be removed and reconstructed performing a skin-reducing mastectomy. Mastectomies cannot replace breast conservation and should be discouraged whenever breast-conserving surgery can be performed with good results. However, in some selected cases, and especially in patients with small breast, conservative mastectomies with contralateral reshape can yield favourable results.

Anatomy relevant to conservative mastectomy

Knowledge of the anatomy of the nipple and breast skin is fundamental to any surgeon practicing conservative mastectomies. In this paper, the relevant clinical anatomy will be described, mainly focusing on the anatomy of the "oncoplastic plane", the ducts and the vasculature. We will also cover more briefly the nerve supply and the arrangement of smooth muscle of the nipple. Finally the lymphatic drainage of the nipple and areola will be described. An appreciation of the relevant anatomy, together with meticulous surgical technique may minimise local recurrence and ischaemic complications.

Nipple areola complex sparing mastectomy

Breast conservative therapy (BCT) is established as a safe option for most women with early breast cancer (BC). The best conservative mastectomy that can be performed, when mastectomy is unavoidable, is nipple-areola-complex sparing mastectomy (NSM), which allows the complete glandular dissection preserving the skin envelope and the nipple areola complex. In the treatment of BC, the cosmetic outcomes have become fundamental goals, as well as oncologic control. NSM is nowadays considered an alternative technique to improve the overall quality of life for women allowing excellent cosmetic results because it provides a natural appearing breast. The breast surgeon must pay attention to details and skin incision must be planned to minimize vascular impairment to the skin and the nipple. Preservation of the blood supply to the nipple is one of the most important concern during NSM because nipple or areolar necrosis is a well-described complication of this surgery. Another issue associated with the nipple preservation and the surgical technique is oncological safety related to nipple-areola-complex (NAC) involvement in patients with invasive BC. The authors present their experience on 252 NSM performed in the Breast Surgery Unit in Forlì. Careful selection of patients for this surgical procedure is imperative and many patients are not ideal candidates for this procedure because of concerns about nipple-areolar viability as women with significant large/ptotic breast, pre-existing breast scars and history of active cigarette smoking. To extend the benefits of nipple preservation to patients who are perceived to be at higher risk for nipple necrosis the authors describe technical modifications of NSM to allow nipple preservation and obtain good cosmetic outcomes.

Using intraoperative laser angiography to safeguard nipple perfusion in nipple-sparing mastectomies

The superior aesthetic outcomes of nipple-sparing mastectomies (NSM) explain their increased use and rising popularity. Fortunately, cancer recurrences involving the nipple-areolar complex (NAC) have been reassuringly low in the range of 1%. Technical considerations and challenges of this procedure are centered on nipple ischemia and necrosis. Patient selection, reconstructive strategies and incision placement have lowered ischemic complications. In this context, rates of full NAC necrosis are 3% or less. The emergence of noninvasive tissue angiography provides surgeons with a practical tool to assess real-time breast skin and NAC perfusion. Herein, we review our classification system of NAC perfusion patterns defined as V1 (from subjacent breast), V2 (surrounding skin), and V3 (combination of V1 + V2). Additionally, we describe the benefits of a first stage operation to devascularize the NAC as a means of improving blood flow to the NAC in preparation for NSM, helping extend the use of NSM to more women. Intraoperative evaluation of skin perfusion allows surgeons to detect ischemia and modify the operative approach to optimize outcomes.

Predictors of nipple ischemia after nipple sparing mastectomy

Nipple sparing mastectomy (NSM) has become an accepted approach in selected cases of breast cancer and prophylactic mastectomy. Various surgical techniques have been described and nipple ischemia has been a common complication. Potential risk factors for nipple ischemia after NSM are examined. To examine predisposing factors for nipple ischemia after NSM. Prospective evaluation of 71 consecutive NSM in 45 patients from 2009 to 2011 was performed. There were 40 mastectomies for cancer (56.3%), and 31 (43.7%) prophylactic mastectomies. In cases of cancer, the ducts were excised from the undersurface of the nipple. Reconstructive methods included: expander 58, latissimus flap/expander 2, implant 10, and free TRAM flap 1. Various patient and technical factors were examined for impact on nipple ischemia. Partial nipple necrosis occurred in 20 cases (28.2%). Nineteen cases healed uneventfully and one required secondary nipple reconstruction. Operations for cancer (OR 10.54, CI 1.88-59.04, p = 0.007) and periareolar incisions (OR 9.69, CI 1.57-59.77, p = 0.014) predisposed to nipple ischemia. Periareolar incisions and dissection of the nipple ducts for cancer have a higher risk of nipple necrosis after NSM.

Prophylactic and therapeutic mastectomy in BRCA mutation carriers: can the nipple be preserved?

BACKGROUND

Use of nipple-sparing mastectomy (NSM) is increasing. We sought to look at the role of NSM in BRCA mutation carriers.

METHODS

Tissue from women with a BRCA1 or BRCA2 mutation who underwent mastectomy between March 1987 and June 2009 at a single institution was reviewed. The entire nipple-areolar complex (NAC) was excised and histologically evaluated. The presence of terminal duct lobular units (TDLUs) and premalignant or malignant lesions in the NAC was noted.

RESULTS

Sixty-two NACs from 33 women (25 BRCA1, 8 BRCA2) were studied. TDLUs were present in 15 (24%) NAC specimens. No evidence of atypical hyperplasia, carcinoma in situ, or invasive carcinoma was found in any of the 33 prophylactic mastectomy specimens. Among the 29 breasts with cancer and available tissue, 2 (7%) had malignant findings and 1 (3%) had atypia in the NAC. One woman who underwent bilateral mastectomy for bilateral invasive carcinoma had one nipple with tumor within lymphatics, and her contralateral nipple had atypical lobular hyperplasia. A second woman had ductal carcinoma in situ involving a single major lactiferous duct.

CONCLUSIONS

The probability of nipple involvement by premalignant or malignant lesions in the NAC of BRCA mutation carriers is low at time of prophylactic mastectomy, but higher (10%) in women undergoing therapeutic mastectomy. NSM may be appropriate and oncologically safe for selected women with BRCA mutations. However, 24% of NACs contained TDLUs, with only 8% found in the nipple papilla; the significance of this for long-term risk is unknown.

Role of nipple sparing mastectomy in modern breast surgery

Recently an increasing number of reports of clinical experience have been published on nipple-sparing mastectomy. By the preservation of uninvolved skin and the nipple areola complex, this surgical technique greatly facilitates immediate reconstruction and optimal aesthetic outcome. However, the procedure raises serious oncologic concerns regarding the risk of an occult or a newly formed primary tumor due to parenchyma left behind in the nipple and the retroareola. Despite the ever increasing popularity of the method, there is still no evidence based confirmation to it. According to data from scientific literature on nipple-sparing mastectomy, there is no straightforward consequence to be drawn on oncologic safety; therefore the procedure is not generally considered to be alternative to standard mastectomy. In the indication of risk reduction, justification of the intervention seems to be well supported, and is expected to foster a greater rate of acceptance of surgical prophylaxis in patients with higher risk diseases. The procedure should be carried out possibly in the framework of clinical trials, in well selected patients with suitable preoperative and postoperative examinations, applying precise techniques and adequate patient education, according to international guidelines. Further long-term results are needed to form a substantive expert opinion. Authors give a detailed description of the surgical techniques, and provide a wide review of the literature, for the first time in Hungarian language. Orv. Hetil., 2011, 152, 1233–1249.

[Nipple sparing mastectomy: an update]

In order to decrease the psychological impact and the mutilating feeling of surgical treatments of the breast cancer when the mastectomy is indicated, authors described and propose the nipple sparing mastectomy (NSM). The only opposable criticism would be the increase of recurrence rate. The study of the recent literature allows us to make a inventory of fixtures concerning this evolution of the surgical practices whether on a technical, oncological, plastic or psychological plan. This technique is not validated in France and adjuvent therapies as the radiotherapy of the nipple are not validated yet. It seems that the NSM is a safe practice from the carcinologic point of view, while having a positive psychological impact in terms of disease and treatment acceptance. The technique seems possible after an information and selection of the patients and with a respect for technical rules (frozen section, peroperative evaluation of the nipple vitality).

Early Complications after Nipple-Sparing Mastectomy and Immediate Breast Reconstruction with Silicone Prosthesis: Results of 214 Procedures

Background and Aims:

Breast reconstruction with silicone prosthesis following nipple-sparing mastectomy has become widely accepted as a reconstruction option in women requiring mastectomy for cancer. The purpose of this study was to evaluate the incidence and some factors influencing early local complications in patients undergoing NSM with immediate implant reconstruction.

Material and Methods:

Prospective study was performed on a consecutive series of 214 breast reconstructions in 205 patients. All complications during the six weeks after surgery were recorded. 42 prostheses were implanted after neoadjuvant chemotherapy, 27 patients previously had radiotherapy due to breast conserving surgery and in all other cases surgery was the primary treatment for cancer.

Results:

The overall six-week complication rate was 16% (35) and included: major skin flap necrosis (4%, 9 procedures), minor skin necrosis (3%, 7), major infection (2%, 5), minor infection (3%, 7), prolonged seroma formation (3%, 6), haematoma (1%, 2) and epidermolysis (1%, 2). In 6% (12) reconstruction procedures explantation of prosthesis was done. Neoadjuvant chemotherapy and radiotherapy were not associated with higher rate of complications.

Conclusion:

Nipple-sparing mastectomy with immediate implant reconstruction has acceptable morbidity rate in the hand of experienced oncoplastic surgeon and therefore should be considered as treatment option to women requiring mastectomy.

["Scarless" surgery in the treatment of breast cancer]

So-called "scarless" surgery in the treatment of breast cancer consists of a group of procedures with a double aim: local control of the oncological process and maintaining the body image of the woman by making incisions that will not be visible. This article describes four approach routes for scarless surgery (periareolar, axillary, submammary, lateral chest) in different contexts of the oncological breast disease. The application of these incisions in the conservative treatment of breast cancer requires making a wide subcutaneous dissection over the tumour location, and a local reconstruction with adjacent breast tissue, so as not to deform the breast contour, as well as moving the nipple with its areola, thus avoiding the surgical modification of the other breast to maintain symmetry between both. We describe the use of hidden incisions to perform mastectomies that try to conserve as much skin as possible, together with the nipple, as well the dissection, with the aid of an endoscope of the latissimus dorsi muscle, in the immediate breast reconstruction.

Nipple-sparing mastectomy: critical assessment of 51 procedures and implications for selection criteria

BACKGROUND

Retrospective studies have shown that occult nipple-areolar complex (NAC) involvement in breast cancer is low, occurring in 6-10% of women undergoing skin-sparing mastectomy (SSM). The cosmetic result and high patient satisfaction of nipple-sparing mastectomy (NSM) has prompted further evaluation of the oncologic safety of this procedure.

METHODS

We conducted a retrospective chart review of 36 self-selected patients who underwent 51 NSM procedures between 2002 and 2007. Criterion for patient selection was no clinical evidence of nipple-areolar tumor involvement. All patients had the base of the NAC evaluated for occult tumor by permanent histologic section assessment. We also evaluated tumor size, location, axillary node status, recurrence rate, and cosmetic result.

RESULTS

Malignant NAC involvement was found in 2 of 34 NSM (5.9%) completed for cancer which prompted subsequent removal of the NAC. Of the 51 NSM, 17 were for prophylaxis, 10 for ductal carcinoma in situ (DCIS), and 24 for invasive cancer. The average tumor size was 2.8 cm for invasive cancer and 2.5 cm for DCIS. Nine patients had positive axillary nodes. Overall, 94% of the tumors were located peripherally in the breast. After mean follow-up of 18 months, only two patients (5.9%) had local recurrence.

CONCLUSION

Using careful patient selection and careful pathological evaluation of the subareolar breast tissue at surgery, NSM can be an oncologically safe procedure in patients where this is important to their quality of life. A prospective study based on focused selection criteria and long-term follow-up is currently in progress.

Nipple-sparing mastectomy: where are we now?

Surgical treatment of breast cancer has evolved from radical mastectomy with routine removal of the nipple-areolar complex (NAC) to breast conservative therapy with preservation of the breast and NAC. When breast conservation is not appropriate or the patient desires mastectomy for risk reduction, conventional therapy still consists of mastectomy with removal of the NAC, followed by reconstruction. Rising interest in improved cosmesis has led to the introduction of the skin-sparing and nipple-sparing mastectomy (NSM) as potential alternatives to mastectomy. There has been much controversy regarding the oncologic safety of these procedures, and the NSM has also introduced a set of complications, such as nipple and areolar necrosis, that are not a concern with total mastectomy. From our review of the literature, we feel that NSM may be a viable option in the appropriate setting, and that its risks and complications are acceptable when compared to the traditional surgical treatment of breast cancer.