Same day discharge following mastectomy and immediate tissue expander reconstruction: The effect of patient expectations.

BACKGROUND AND PURPOSE: Within, we compare the short-term outcomes of patients receiving same day mastectomy and tissue expander reconstruction for those discharged on postoperative day one versus those discharged immediately following surgery to explore the safety, efficacy, and potential impact on hospital processes. METHODS: This was a retrospective review of patients undergoing mastectomy with immediate TE reconstruction from March 2019 to March 2021. Patients were stratified into two cohorts; observation overnight (OBS), and discharge on same day of surgery (DC). RESULTS: In total, 153 patients underwent 256 mastectomies with immediate TE reconstruction. All patients were female and the mean age was 48 years old. The DC cohort contained 71 patients (125 mastectomies) and there were 82 patients (131 mastectomies) within the OBS cohort. On average the DC cohort had a lower BMI than the OBS group (mean ± SD; DC 26.8 kg/m2 ± 5.3 kg/m2, OBS 28.7 kg/m2 ± 6.1 kg/m2, p = 0.05), the DC cohort had higher rates of adjuvant chemotherapy (DC 40.1%, OBS 23.2%, p = 0.02), and were more likely to undergo bilateral TE reconstruction (DC 76%, OBS 60%, p = 0.03) than the OBS group. No differences were observed between cohorts in complication rates regarding primary or secondary outcomes. CONCLUSION: These findings indicate that it is safe and effective within the immediate 7-day post-operative period to immediately discharge patients undergoing mastectomy with immediate TE reconstruction. Additionally, alteration of patient management practices can have a profound impact on the operational flow within hospitals.

Use of the modified meek technique for the coverage of extensive burn wounds.

INTRODUCTION: Autologous split thickness skin grafting using meshing technique remains the preferred option for the management of deep dermal and full thickness burns. The limited donor site availability seen in patients with extensive burns, however, restricts use of the mesh grafting technique for skin expansion. Meek micrografting was developed to allow for greater expansion, and, therefore, more reliable treatment of extensive burns. This study aimed to present our outcomes using the Meek micrografting technique and identify risk factors for graft failure. METHODS: A retrospective review of patients admitted to our large academic hospital who were treated with the Meek micrografting technique from 2013 to 2022 was conducted. Patient demographics, surgical characteristics and outcomes were reported. Regression analyses were performed to identify factors that influence graft take and reoperation rate. RESULTS: A total of 73 patients with a mean age of 45.7 ± 19.9 years and mean burn size of 60.0 ± 17.8%TBSA, with 45.3 ± 14.9% TBSA being third degree burns, received Meek transplantation. The mean graft take after removal of the pre-folded polyamide gauze at the tenth post-operative day was 75.8 ± 14.7%. Pre-treatment with use of an allograft, longer waiting time between admission and Meek grafting and transplantation over a dermal matrix were identified as positive predictors for graft take, while age was established as a negative predictor. CONCLUSION: By examining the outcomes of the Meek micrografting technique in extensive burn wounds we identified that preconditioning of the wound bed, through allograft or negative pressure wound therapy application, positively correlates with improved outcomes, including higher graft take. At the same time, older age was seen to negatively correlate with graft take. Overall, Meek transplantation displays a favorable safety profile with promising outcomes. Future prospective studies and clinical trials can optimize the procedure and help establish it as the golden standard for extensive and complex burns.

Scalp Closure in Midline Cutis Aplasia-An Absolute Indication for Preoperative Imaging.

The ideal evaluation and treatment of aplasia cutis congenita remains disputed. We present a case of midline scalp cutis aplasia that healed by secondary intention, leaving an area of residual alopecia. There were no clinical indicators of an underlying calvarial defect. Tissue expansion of the scalp was done in preparation for scalp closure. However, on the removal of the expanders and scalp advancement, an unrecognized midline calvarial defect in which a scar tract of herniated dura was found. This resulted in a dural tear, repaired with minimal hemorrhage. However, manipulation of the sagittal sinus resulted in a right subdural hemorrhage followed by cerebral ischemia and a stroke. On the basis of this clinical scenario, we recommend that all cases of midline scalp cutis aplasia undergo preoperative imaging with thin slices of the calvaria before performing scalp advancement-even if the only clinical indication for surgery is scalp alopecia without a palpable skull defect.

Machine learning analysis of online patient questions regarding breast reconstruction.

BACKGROUND: Social media has become a dominant educational resource for breast reconstruction patients. Rather than passively consuming information, patients interact directly with other users and healthcare professionals. While online information for breast reconstruction has been analyzed previously, a robust analysis of patient questions on online forums has not been conducted. In this study, the authors used a machine learning approach to analyze and categorize online patient questions regarding breast reconstruction. METHODS: Realself.com was accessed and questions pertaining to breast reconstruction were extracted. Data collected included the date of question, poster's location, question header, question text, and available tags. Questions were analyzed and categorized by two independent reviewers. RESULTS: 522 preoperative questions were analyzed. Geographic analysis is displayed in Figure 1. Questions were often asked in the pre-mastectomy period (38.3%); however, patients with tissue expanders currently in place made up 28.5%. Questions were often related to reconstructive methods (23.2%), implant selection (19.5%), and tissue expander concerns (16.7%). Questions asked in the post-lumpectomy period were significantly more likely to be related to insurance/cost and reconstructive candidacy (p < 0.01). The "Top 6″ patient questions were determined by machine learning analysis, and the most common of which was "Can I get good results going direct to implant after mastectomy?" CONCLUSIONS: Analysis of online questions provides valuable insights and may help inform our educational approach toward our breast reconstruction patients. Our findings suggest that questions are common throughout the reconstructive process and do not end after the initial consultation. Patients most often want more information on the reconstructive options, implant selection, and the tissue expansion process.

Post-mastectomy Breast Reconstruction With Gas vs Saline Tissue Expanders: Does the Fill Type Matter?

The most common reconstruction technique following mastectomy is a 2-stage technique that involves tissue expansion followed by definitive implant-based reconstruction (IBR). Tissue expanders (TEs) have classically used saline for initial fill; however, TEs with an initial gas fill (GTE)-including the CO2-based AeroForm (AirXpanders, San Francisco, CA) TE and TEs initially filled with atmospheric air-have been increasingly used in the past decade. We aimed to compare the outcomes in breast reconstruction for tissue expanders initially filled with saline vs gas. PubMed was queried for studies comparing gas- and saline-filled tissue expanders (STEs) used in IBR. A meta-analysis was performed on major postoperative outcomes and the required expansion and definitive reconstruction time. Eleven studies were selected and included in the analysis. No significant differences existed between tissue expansion with GTEs vs STEs for 11 of the 13 postoperative outcomes investigated. Out of the complications investigated, only the risk of infection/cellulitis/abscess formation was significantly lower in the GTE cohort (odds ratio 0.62; 95% CI, 0.47 to 0.82; P = .0009). The time to definitive reconstruction was also significantly lower in the GTE cohort (mean difference [MD], 45.85 days; 95% CI, -57.80 to -33.90; P < .00001). The total time to full expansion approached significance in the GTE cohort (MD, -20.33 days; 95% CI, -41.71 to 1.04; P = .06). A cost analysis considering TE cost and infection risk determined that GTE use saved a predicted $2055.34 in overall healthcare costs. Surgical outcomes for both fill types were predominantly similar; however, GTEs were associated with a significantly decreased risk of postoperative infection compared to saline-filled TEs. GTEs could also reduce healthcare expenditures and require less time until definitive reconstruction after placement.

Resurfacing of Sleeve-Like Circumferential Giant Congenital Melanocytic Nevi on the Upper Extremity With Pre-Expanded Pedicled Flap.

As the relative shortage of healthy tissue obviates the option of local soft tissue coverage, reconstruction of circumferential giant congenital melanocytic nevi (GCMN) on the upper extremity remains particularly challenging. Here the authors report a 3-stage procedure involving pre-expanded pedicled flap from the torso for the reconstruction of upper extremity after circumferential GCMN excision in pediatric patients. The giant nevus was completely removed and the size of the excised nevus was 31 × 14.5 cm. The donor site was primarily closed. No major complication was encountered. Reconstruction with expanded pedicled flap achieved satisfactory results, both functionally and cosmetically.

Lower Extremity Pediatric Tissue Expansion: A Single Surgeon's 16-Year Experience.

BACKGROUND: Tissue expansion is a well-established approach to soft tissue reconstruction in the pediatric population for lower extremity pathologies. Unfortunately, complication rates range from 19% to 40% in literature, including infection and implant extrusion, leading to delays in reconstruction. These challenges have prompted investigation toward categorizing risk factors for lower extremity tissue expander placement. METHODS: A retrospective study of pediatric patients who underwent lower extremity tissue expander placement by the senior author (R.J.R.) was performed over a 16-year period. Patient charts were reviewed to categorize baseline and operative characteristics. Primary outcome variables were surgical-site infection, expander extrusion, and expander deflation. Univariate and multivariate logistic regressions were performed ( α < 0.05). RESULTS: There were 59 tissue expanders in our cohort. The overall complication rate was 27.1% with a 77.2% successful reconstruction rate. Greater number of expanders placed during 1 operation is associated with 2.5 increased odds of having any complication and is associated with 0.4 decreased odds of having a successful reconstruction. Incisions made in scar tissue for expander placement appear to be associated with a greater than 7 times increased odds of readmission. CONCLUSIONS: Reconstruction of soft tissue pathologies using lower extremity tissue expanders in the pediatric population is an effective yet challenging technique. This study identified that the number of expanders inserted during 1 operation, incisions made over scar tissue, and expanders placed in the anterior thigh were correlated with having a negative impact on reconstructive outcomes. Extra care should be taken with patients who require multiple expanders during 1 operation and with choosing the location and incision of expander placement.

Tracing the Change and Contribution of Subcutaneous Adipose to Skin Expansion Using a Luciferase-Transgenic Fat Transplantation Model.

BACKGROUND: During skin expansion, subcutaneous adipose tissue undergoes the greatest change. The adipose layer appears to gradually thin or even disappear in long-term expansion. The response and contribution of adipose tissue to skin expansion remain to be elucidated. METHODS: The authors established a novel expansion model by transplanting luciferase-transgenic adipose tissue into the rat dorsum, followed by integrated expansion, to trace the dynamic changes in subcutaneous adipose tissue during expansion and the migration of adipose tissue-derived cells. In vivo luminescent imaging was performed to continuously track the adipose tissue changes. Histologic analysis and immunohistochemical staining evaluated the regeneration and vascularization of the expanded skin. Growth factor expression in expanded skin with or without adipose tissue was determined to evaluate the paracrine effect of adipose tissue. Adipose tissue-derived cells were traced in vitro by anti-luciferase staining, and their fate was determined by costaining for PDGFRα, DLK1, and CD31. RESULTS: In vivo bioimaging showed that cells in adipose tissue were alive during expansion. After expansion, the adipose tissue exhibited fibrotic-like structures, with more DLK1 + preadipocytes. Skin expanded with adipose tissue was significantly thicker than that without adipose tissue, with more blood vessels and cell proliferation. Vascular endothelial growth factor, epidermal growth factor, and basic fibroblast growth factor expression was higher in adipose tissue than in skin, indicating paracrine support from adipose tissue. Luciferase-positive adipose tissue-derived cells were observed in expanded skin, indicating direct participation in skin regeneration. CONCLUSION: Adipose tissue transplantation can effectively promote long-term skin expansion by contributing to vascularization and cell proliferation by means of various mechanisms. CLINICAL RELEVANCE STATEMENT: The authors' findings suggest that it would be better if the expander pocket is dissected over the superficial fascia to preserve a layer of adipose tissue with skin. In addition, their findings support the treatment of fat grafting when expanded skin presents with thinning.

Acellular Dermal Matrix Cover Improves Skin Growth during Tissue Expansion by Affecting Distribution of Mechanical Forces.

BACKGROUND: Biological cover over tissue expander prostheses has been introduced to provide soft-tissue support for tissue expanders during breast reconstruction. However, its impact on mechanically induced skin growth remains unknown. This study investigates the hypothesis that covering the tissue expander with acellular dermal matrix (ADM) affects mechanotransduction without compromising the efficacy of tissue expansion. METHODS: Tissue expansion, with and without use of ADM, was performed on a porcine model. The tissue expanders were inflated twice with 45 mL of saline, and the full-thickness skin biopsy specimens were harvested from expanded and control unexpanded skin 1 week and 8 weeks after the final inflation. Histologic evaluation, immunohistochemistry staining, and gene expression analysis were performed. Skin growth and total deformation were evaluated using isogeometric analysis. RESULTS: The authors' results demonstrate that use of ADM as a biological cover during tissue expansion does not impede mechanotransduction that leads to skin growth and blood vessel formation. Isogeometric analysis revealed similar total deformation and growth of expanded skin with and without a biological cover, confirming that its use does not inhibit mechanically induced skin growth. In addition, the authors found that use of an ADM cover results in more uniform distribution of mechanical forces applied by the tissue expander. CONCLUSIONS: These results suggest that ADM improves mechanically induced skin growth during tissue expansion by facilitating a more uniform distribution of mechanical forces applied by the tissue expander. Therefore, the use of a biological cover has potential to improve outcomes in tissue expansion-based reconstruction.

Outcomes after tissue expander exchange to implant in two-stage prepectoral breast reconstruction with and without acellular dermal matrix: A retrospective cohort study.

As prepectoral implant placement becomes widely adopted, recent studies investigating the use of acellular dermal matrix (ADM) during tissue expander placement have demonstrated no major benefit with regard to postoperative outcomes. We sought to evaluate second-stage outcomes 1 year after tissue expander exchange to implant with and without ADM. Consecutive patients who underwent prepectoral tissue expander-based breast reconstruction with and without ADM were identified. Patients were followed up for 1 year after tissue expander exchange to implant. Second-stage outcomes of interest including implant rippling, capsular contracture, implant explantation, additional revision surgeries, and patient-reported outcomes were collected and compared. Sixty-eight breasts in the ADM cohort and sixty-one breasts in the no ADM cohort underwent tissue expander exchange to implant. Second-stage outcomes of interest were similar between the ADM and no ADM cohorts with no statistically significant differences identified regarding incidences of implant rippling (24.6% vs. 12.1%, p = 0.08), capsular contracture (4.5% vs. 3.3%, p = 1.00), and explantation (6.6% vs. 1.7%, p = 0.67) between the two cohorts. BREAST-Q scores were similar between the two cohorts with the exception of physical wellbeing and satisfaction in terms of implant rippling, as can be seen, which improved in the no ADM cohort (p = 0.04). Our study reports no major benefit for the inclusion of ADM with respect to implant rippling, capsular contracture, explantation, need for additional revision surgeries, and patient-reported satisfaction in prepectoral second-stage implant-based breast reconstruction.

Platelet-rich gel versus external tissue expansion technique in treating scalp defects: A retrospective study.

Reconstruction of scalp defects is a complicated and challenging procedure for reconstructive surgeons. This retrospective observational study assessed the effectiveness of using platelet-rich gel (PRG) versus the external tissue expansion technique (TET) in reconstructing scalp defects. The clinical data of 24 patients with scalp defects treated with PRG or external TET were collected from September 2018 to March 2022. Data on the wound characteristics, wound healing time, cost of treatment, visual analog scale, and observed wound healing status were collected. The mean wound healing times in the PRG and TET groups were 25.00 ± 5.77 and 13.58 ± 9.68 days, respectively (P < .05). The PRG group was significantly more cost-effective than the TET group (P < .05). TET treatment significantly increased patients' postoperative pain, which decreased over time (P < .05), while PRG treatment caused no significant change in pain (P > .05). The 2 groups showed no tissue depression or color change after wound healing at follow-up, but the hair growth in the TET group was significantly better than that in the PRG group (P < .05). Compared with TET treatment of scalp defects, PRG is not only simple and painless but also has a low treatment cost and, more importantly, does not involve the risk of surgery and anesthesia. However, using TET to treat scalp defects requires the careful selection of appropriate cases.

Surgical delay increases the survival of expanded random-pattern flap in pediatric patients.

Despite the aid of tissue expansion, the ideal design of random pattern flap is not always available in patients with extensive skin lesions. We investigated the effectiveness of surgical delay on expanded flaps in pediatric patients. Retrospective cohort study was performed on patients who underwent tissue expansion surgery for extensive skin lesions at Seoul National University Children's Hospital. The surgical delay technique was employed for patients with unfavorable flap conditions related to location or transposition angles. The dimensions of skin lesions and flaps were measured based on medical photographs. Fifty patients underwent a total of 66 tissue expansion procedures (49 conventional procedures among 41 patients, 17 surgical delay procedures among 15 patients) from January 2016 to September 2019. Although flaps in the surgical delay group were more narrow-based (p < 0.001), the partial flap loss rate and excised area-to-inflation amount ratio was comparable between the two groups (p = 0.093 and p = 0.194, respectively). Viable flaps, excluding postoperative necrosis, in the surgical delay group were significantly more narrow-based in terms of the length-to-base width ratio and the area-to-base width ratio compared to conventional group (p < 0.01, p < 0.01). Surgical delay can result in outcomes comparable to well-designed random flaps, even in disadvantageous conditions. Patients with large skin lesions but limited areas for expansion may benefit from surgical delay.

Hydrogel based soft tissue expanders for orodental reconstruction.

Tension-free flap closure to prevent soft tissue dehiscence is a prerequisite for successful bone augmentation in orodental reconstructive surgery. Since soft tissue contour follows the underlying jaw bony architecture, resorption of alveolar (jaw) bone limits the availability of soft tissue for wound closure following major bone reconstruction, required to facilitate oral rehabilitation with endosseous dental implants following tooth loss. Although there are several clinical procedures to increase soft tissue volume, these techniques are complicated and technically demanding. Soft tissue expansion, an established technique in reconstructive surgery, is an ideal alternative to generate surplus soft tissue prior to bone augmentation and dental implant placement. Increase in tissue volume can be achieved by using soft tissue expanders (STEs). Contemporary STEs have evolved from silicone balloons to osmotically inflating hydrogel-based systems. Here, we provide an overview of STEs in clinical oral surgery, outline the current research in STEs, and an update on recent clinical trials as well as the associated complications. Also, the mechanism governing soft tissue expansion and the critical factors that control the expansion process are covered. Design considerations for STEs for intraoral applications are given particular attention. Finally, we present our perspectives on utilization of minimally invasive methods to administer STEs for orodental applications. STATEMENT OF SIGNIFICANCE: Soft tissue expansion is required for a range of reconstructive applications and more notably in regenerative dentistry for vertical bone augmentation. This review describes the commercially available soft tissue expanders along with the latest systems being currently developed. This review insightfully discusses the biological and physical mechanisms leading to soft tissue expansion and critically assesses the design criteria of soft tissue expanders. A particular focus is given on the development of a new generation of hydrogel-based soft tissue expanders; their chemistry and required physical properties for tissue expansion is described and the obstacles towards clinical translations are identified. Finally, the review elaborates on promising minimally invasive injectable hydrogel-based tissue expanders and highlights the beneficial features of these systems.

Customization of Soft Tissue Expanders: Improving Safety, Accuracy, and Efficiency for Treatment of Large and Complicated Skin Lesions.

BACKGROUND: Soft tissue expansion is a common technique for restoring large skin defects. Fixed-type expanders may be inappropriate for the following reasons: (1) the shapes and sizes of the defects vary in different patients; and (2) the bulged base of the fixed-type expander does not fit the curve of the human body, which may induce complications such as concave deformities or nerve palsy from continuous mechanical compression. The customized expander adjusts better to the shape and the topography of the expansion site compared with the fixed-type expander. It improves expansion efficiency and reduces complications caused by compression. METHODS: Between 2016 and 2022, customized soft tissue expansion was performed in 38 patients with skin lesions, including giant congenital melanocytic nevi and postburn scars. This series of patients included patients with a specific donor site shape that is unsuitable for fixed-type expanders. An expander was customized according to the shape of the donor site and then implanted in the subcutaneous pocket. After the expander reached a sufficient volume, the expander was removed, and the extra expanded skin flap was transferred to resurface the skin lesion. In the follow-up, the outcome and the complications were recorded. RESULTS: All the customized expanders fit not only the dimension but also the topography of the donor site. During expansion, 2 patients experienced leakage of the expander, and 3 patients suffered a skin rupture. In the remaining 33 patients, the expansion was successfully completed, and the expanded flaps restored the skin lesions as designed. The color and texture of the skin flaps remained satisfactory after long-term follow-up. CONCLUSIONS: Unlike fixed-type expanders, our customized expanders make it possible for "accurate" expansion, irrespective of the dimension and topography of the donor area. Customization of the expander helps increase efficiency and reduce complications caused by undue compression.

Benefits of Using Magnetic Resonance Imaging During Breast Tissue Expansion: Literature Review and Case Series.

Breast cancer results in up to 1.6 million new candidates for yearly breast reconstruction (BR) surgery. Two-stage breast reconstruction surgery with the use of a tissue expander (TE) is a common approach to reconstructing the breast after mastectomy. However, a common disadvantage encountered with the traditional breast TE is the magnetic injection port, which has been reported to cause injuries in patients undergoing magnetic resonance (MR) imaging. Therefore this type of breast TE is labeled "MR unsafe." Recent technological advances have incorporated radio-frequency identification (RFID) technology in the TE to allow for the location of the injection port without magnetic components, resulting in an MR-conditional TE. This paper aims to review the information regarding the safety profile of TEs with magnetic ports and to gather distinct clinical scenarios in which an MR-conditional TE benefits the patient during the BR process. A literature review ranging from 2018 to 2022 was performed with the search terms: "tissue expander" OR "breast tissue expander" AND "magnetic resonance imaging" OR "MRI." Additionally, a case series was collected from each of the authors' practices. The literature search yielded 13 recent peer-reviewed papers, and 6 distinct clinical scenarios were compiled and discussed. Most clinicians find MRI examinations to be the state-of-art diagnostic imaging modality. However, due to the preexisting risks associated with TEs with magnetic ports, the MRI labeling classification should be considered when deciding which TE is the most appropriate for the patient requiring MRI examinations.

Reconstruction of High-Tension Scalp Defects by the Twizzler Technique: A Retrospective Case Series.

BACKGROUND: Scalp wounds are difficult to close primarily because of the inelasticity of the galea, often requiring adjacent tissue transfer or grafting. It is still debated whether intraoperative tissue expansion can occur on the scalp. OBJECTIVE: We report our experience with the Twizzler technique, a form of intraoperative tissue expansion and load cycling, to achieve primary closure of high-tension scalp wounds. MATERIALS AND METHODS: In this case series, scalp defects repaired by the Twizzler were identified and those with minimum 3 month follow-up underwent assessment by physicians and patients. RESULTS: All 50 scalp defects that could not be otherwise closed primarily were repaired successfully with the Twizzler. The average defect width was 2.0 cm (range 0.9-3.9 cm), the average physician aesthetic rating was 3.71 on a 5-point scale (very good; n = 25), and most patients rated the scars as "near normal skin" on the Patient and Observer Scar Assessment Scale 3.0 ( n = 32). CONCLUSION: Based on the findings of this case series, the Twizzler can be used to repair small and medium high-tension scalp defects after Mohs micrographic surgery. Intraoperative tissue expansion and creep deformation on the scalp is limited, but seemingly possible.

Seroma After Breast Reconstruction With Tissue Expanders: Outcomes and Management.

BACKGROUND: Seroma is a relatively common complication after breast reconstruction with tissue expanders. The main risk in the presence of seroma is development of periprosthetic infection, which can lead to implant loss. Our goals were to identify risk factors for seroma, and to describe our protocol for managing fluid accumulation. PATIENTS AND METHODS: An IRB approved breast reconstruction database was reviewed to identify patients who underwent tissue expander reconstruction. Patient characteristics, details of surgery, outcomes and treatment were recorded. RESULTS: Two hundred nineteen tissue expander reconstructions were performed in 138 patients. Twenty-eight reconstructions developed seroma (12.8%), and 75 were identified to have prolonged drains (34.2%). Seroma was more common in patients with lymph node surgery ( P = 0.043), delayed reconstruction ( P = 0.049), and prepectoral reconstruction ( P = 0.002). Seroma and/or prolonged drains were more commonly noted in patients with higher body mass index ( P = 0.044) and larger breast size ( P = 0.001). Aspiration was the most common intervention (85.7%), which was performed in the clinic utilizing the expander port site. There was no difference in infection or explantation rate between seroma and no-seroma patients ( P = 0.546 and 0.167), whereas patients with any fluid concern (seroma and/or prolonged drains) were more prone to developing infection and undergoing explantation ( P = 0.041 and P < 0.005). CONCLUSION: We recommend that prolonged drain placement longer than 3 weeks should be avoided, and patients should be screened for fluid accumulation after drain removal. Serial aspiration via expander port site and continuation of expansion provide a safe and effective method to manage seromas to avoid infection and expander loss.

A modified tissue expander method for ear reconstruction in patients with excessively insufficient postauricular skin.

OBJECTIVE: For microtia patients with excessively insufficient postauricular skin, it is difficult to obtain a satisfied outcome with existing strategies. In this study, we developed a modified tissue expander method for auricular reconstruction. METHODS: The modified tissue expander method divided into 4 stages. In the first stage, a 30 ml or 50 ml kidney-shaped tissue expander was implanted in the mastoid region. A short time expansion (average 33.5 days) was conducted subsequently. In the second stage, the expander was removed and a modified cartilage framework without tragus was inserted through the same incision. A crescent-shaped cartilage pad was inserted into the incision of cartilage-harvest site at the same time. In the third stage, the reconstructed ear was elevated. Lobule rotation and remanent modification were performed in the fourth stage. The patients were followed up between half a year and 10 years. The outcomes of the reconstructed ears were scored with evaluation criteria. RESULTS: From January 2010 to December 2019, a total of 45 microtia patients with excessively insufficient postauricular skin were performed the modified tissue expander method. Fourty-two patients showed satisfied outcomes. Complications such as hyperpigmentation in the skin graft area (3, 6.7%), scar hyperplasia (3, 6.7%) and folliculitis (1, 2.2%) were found. There were no complications related to the tissue expander. CONCLUSION: The modified tissue expander method is an effective and safe technique for auricular reconstruction in patients having excessively insufficient postauricular skin, with satisfying medium-term results.

Wise Pattern versus Transverse Pattern Mastectomy in Two-Stage Implant-Based Breast Reconstruction: A Propensity Score-Matched Analysis.

BACKGROUND: The Wise pattern adapted to mastectomy incisions has become a valuable asset for breast reconstruction in patients with large and ptotic breasts. The authors compared the time for exchange, time to initiate postmastectomy radiotherapy, and complication rates between Wise pattern and transverse incision pattern reconstructions. METHODS: Records of patients who underwent immediate, two-stage, implant-based breast reconstruction (IBBR) between January of 2011 and December of 2020 were retrospectively reviewed. Two cohorts were compared according to the incision pattern: Wise pattern versus transverse incision pattern. Complications were compared after propensity score matching. RESULTS: The authors initially analyzed 393 two-stage immediate IBBRs in 239 patients [91 IBBRs (23.2%) in the Wise pattern group and 302 (76.8%) in the transverse pattern group]. Expansion time (53 days versus 50 days, P = 0.9), time for tissue expander-to-implant exchange (154 versus 175 days, P = 0.547), and time to initiate postmastectomy radiotherapy (144 days versus 126 days, P = 0.616) were not different between groups. Before propensity score matching, the 30-day rate of wound-related complications (32% versus 10%, P < 0.001) and the 30-day rate of wound complications requiring excision/débridement and closure procedures (20% versus 7%, P < 0.001) were significantly higher in the Wise pattern group. After propensity score matching, the 30-day rate of wound complications was persistently higher (25% versus 10%, P = 0.03) in the Wise pattern group. CONCLUSIONS: The Wise pattern mastectomy independently increases the incidence of wound-related complications versus only transverse patterns during two-stage IBBR, even after propensity score matching. Delayed tissue expander placement may improve the safety profile of this procedure. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.