Angelica Hernandez Alvarez

Background: Nerve conduits are used to bridge peripheral nerve defects caused by trauma, iatrogenic injury, or oncologic disruption. Three-dimensional (3D) biomimetic scaffolds for peripheral nerve regeneration have advanced significantly in recent years, driven by improvements in printing technology and neuronal seeding techniques. We report on published designer conduits that can recreate the epineurium, a critical yet challenging-to-manufacture feature of nerve tissue. Methods: A medical librarian conducted a literature search for our systematic review on EMBASE, Web of Science, and PUBMED, following PRISMA guidelines, for articles from January 2010 to January 2026 for the systematic review. Descriptive statistical analysis was performed using Microsoft 365 Suite software. The literature review was conducted using keywords and search terms describing the history and development of 3DP nerve guidance conduits published prior to January 2026. Results: Our search yielded 273 titles, of which 8 were included after full-text review; these studies used 3D printing to generate nerve conduits for preclinical models. Manual data extraction identified studies reporting successful epineurial recreation. The included scaffold materials were polycaprolactone, poly(l-lactide-co-ε-caprolactone), poly(lactic-co-glycolic acid), acrylate resin, and gelatin methacryloyl. In animal model studies, various terms were used to describe the epineurium outer sheath. Despite this variability in nomenclature, many of these reports indicated successful sciatic functional index (SFI) recovery, favorable g-ratios, good durability, high cell viability, and significant neurite elongation at the time of sacrifice. Conclusions: 3DP nerve conduits targeting the epineurium are promising approaches for treating peripheral nerve defects. The constructs promote oriented growth and myelination. Future research on incorporating the epineurium into nerve scaffolds may consider encapsulating NGF to promote more efficient nerve regeneration, standardizing the definition of epineurial recreation, designing mechanical and permeability reporting benchmarks, and evaluating cell strategies using comparable functional and histologic endpoints.

Abdominal masses in solid organ transplant recipients present a diagnostic challenge, as immunosuppression increases the risk of malignancies such as post‐transplant lymphoproliferative disorder (PTLD) and gastrointestinal stromal tumors (GISTs). These entities frequently involve the bowel and may manifest with nonspecific or vague abdominal symptoms, making differentiation between benign and malignant small bowel obstruction (SBO) critical for appropriate management and prognosis. We present the case of a kidney transplant recipient on chronic immunosuppression who developed intermittent abdominal pain and nausea, ultimately diagnosed with partial SBO. Cross‐sectional imaging revealed a jejunal mass concerning for lymphoma. However, surgical exploration demonstrated jejunal erosion by a previously placed surgical mesh with an associated fecalith, mimicking neoplastic disease. The patient underwent segmental bowel resection with mesh removal, leading to complete resolution of symptoms. This case highlights the importance of maintaining a broad differential diagnosis when evaluating intra‐abdominal masses in transplant recipients, particularly in those with a history of prior surgery and mesh placement. Awareness of this potential mimic is essential to avoid misdiagnosis and ensure timely surgical management.

Background: Most deaths after outpatient plastic surgery are because of thromboembolic events, particularly pulmonary embolism (PE). The effectiveness of QUAD A deep vein thrombosis (DVT) safety measures after recent policy changes remains undocumented. Objectives: The aim of the authors of the study is to assess how adherence to DVT prophylaxis guidelines affects complications and mortality in QUAD A facilities. Methods: Using the Patient Safety Data Reporting database, we retrospectively assessed DVT, PE, and mortality rates in adult patients at QUAD A facilities from 2019 to 2023, with subgroup analysis of plastic surgery centers. The authors analyzed demographics and complications relative to facility protocol compliance using descriptive statistics and regression analyses. Results: The authors identified 3,338,519 surgeries and 247 DVT/PE events. Facility-level deficiencies in DVT/PE prophylaxis ranged from 7.4% to 14.17%; peak deficiencies coincided with the highest complications and mortality. Among DVT/PE patients, 67 underwent plastic surgery (mean age 47.7 years, standard deviation [SD: 11.8]; mean BMI 29.2 kg/m2, [SD: 7.7]); 94% were women. The mean operative time was 220.4 min (SD: 115.9), with 98.5% of procedures under general anesthesia and nearly half of patients (49.3%) hospitalized postoperatively. Liposuction was most commonly associated with complications (38.8%), followed by multiple procedures (23.9%). Within plastic surgery, cosmetic procedures accounted for 73.1% of complications. Statistical analysis showed an association between liposuction and DVT/PE occurrence, with more favorable outcomes for cosmetic procedures (P = .038). Conclusions: Following a QUAD A policy change, DVT/PE rates peaked alongside DVT/PE prophylaxis deficiencies. Based on the findings of this study, the authors suggest considering a standardized prophylaxis and preoperative evaluation to reduce morbidity and mortality. Liposuction patients may be at higher risk for these complications. Level of Evidence: 3 (Therapeutic):

This literature review provides a novel exploration of zinc’s multifaceted roles in dermatology, with a particular focus on its potential integration into botulinum toxin formulations—an area that remains relatively underexplored in clinical practice. Zinc is widely recognized for its critical functions in skin health, including morphogenesis, regeneration, and protection, and its use in aesthetic medicine offers a unique opportunity for innovation. Specifically, incorporating zinc into botulinum toxin formulations could enhance the efficacy and stability of these treatments. Although zinc has historically been used in topical dermatological products and systemic health interventions, its potential in cosmetic preparations, such as anti-aging therapies or non-invasive aesthetic treatments, remains under-researched. Emerging patents suggest promising formulations combining zinc with botulinum toxin that may improve product stability and extend therapeutic effects. While current studies on oral zinc supplementation present mixed results concerning its ability to prolong botulinum toxin effects, this underscores the need for more rigorous investigation in the realm of aesthetic medicine. Zinc’s well-established role in stabilizing dermatological products, such as sunscreens, and its applications in wound healing and skin regeneration, further highlights its potential for broader therapeutic uses beyond cosmetic applications. This review identifies a critical gap in the literature and calls for future research to optimize zinc concentrations and delivery methods specifically for aesthetic medical procedures, offering new insights into improving dermatological treatments beyond the scope of traditional cosmetic preparations.

Background Postoperative free tissue transfer reexploration procedures are relatively infrequent but associated with increased overall failure rates. This study examines the differences between flaps requiring takeback versus no takeback, as well as trends in reexploration techniques that may increase the odds of successful salvage. Methods A retrospective review was conducted on all free tissue transfers performed at our institution from 2011 to 2022. Patients who underwent flap reexploration within 30 days of the original procedure were compared with a randomly selected control group who underwent free flap procedures without reexploration (1:2 cases to controls). Univariate and multivariate logistic regression analyses were performed. Results From 1,213 free tissue transfers performed in the study period, 187 patients were included in the analysis. Of the total flaps performed, 62 (0.05%) required takeback, and 125 were randomly selected as a control group. Free flap indication, flap type, reconstruction location, and number of venous anastomoses differed significantly between the two groups. Among the reexplored flaps, 8 (4.3% of the total) had a subsequent failure while 54 (87.10%) were salvaged, with significant differences in cause of initial flap failure, affected vessel type, and salvage technique. Conclusion Free tissue transfers least prone to reexploration involved breast reconstruction in patients without predisposition to hypercoagulability or reconstruction history. When takeback operations were required, salvage was more likely in those without microvascular compromise or with an isolated venous injury who required a single exploratory operation.