Escandón, Joseph M.

ABSTRACT Background There is limited data regarding the surgical outcomes of urosymphyseal fistula (USF) repair with primary repair or autologous tissue transfer. We performed a study to compare outcomes of USF repair with primary repair, VRAM flap, and omental flap. Methods We retrospectively identified patients with a diagnosis of USF who underwent fistula decompression and urinary tract reconstruction. The minimal follow‐up was 3 months. Patients with distal urethral obstruction, radiation cystitis, or a non‐viable sphincter underwent anterior exenteration and flap transfer. Results Fifty‐six patients were included. Eleven patients underwent surgical management for USF using primary repair (19.6%), 34 had omental flap‐based reconstruction (60.8%), and a VRAM flap was used in 11 patients (19.6%). The 90‐day rate of sepsis was lower with omentum flap transposition (3%) compared with VRAM flap (27%) or primary repair (18%, p = 0.041). The rate of fistula recurrence was lower in the omentum flap group compared with USF primary repair (30%) or VRAM flap repair group (27.3%, p = 0.04). On multivariable analysis, USF repair with the omentum flap decreased the odds of fistula recurrence 90 days after surgery compared with primary repair (OR 0.012, p = 0.011) but not when compared with VRAM. Conclusion The omentum flap may offer a better safety profile in terms of decreasing the rate of early sepsis and rate of fistula recurrence for USF repair in comparison to primary repair. There is limited evidence regarding the superiority of the omentum flap to decrease the rate of late fistula recurrence when compared with the VRAM flap.

Neoadjuvant immune checkpoint inhibition (Neo-ICI) in melanoma is an emerging therapeutic strategy that induces pathologic responses with significant prognostic implications for survival. Tumor burden in nonresectable melanoma has a major impact on immunotherapy efficacy, yet little is known on its impact in the Neo-ICI setting. We evaluated the association between tumor burden, measured by the sum of diameters (SoD), and pathological response in melanoma patients treated with Neo-ICI. A meta-analysis of published trials in resectable stage III/IV melanoma was conducted, extracting data on patient characteristics, treatment regimens, pathological response, and survival outcomes. A total of 451 patients were included in the meta-analysis. The pooled pathological complete response (pCR) rate was 47% (95% confidence interval: 35–58%; P < 0.001). Meta-regression demonstrated a significant association between SoD and pCR (moderator = −0.36; P = 0.032), with greater tumor burden associated with lower pCR rates. No significant association was observed between SoD and recurrence-free survival (RFS). This study identifies higher tumor burden as a potential risk factor for lower pathologic response rates to neoadjuvant therapy, underscoring the need to incorporate tumor burden into future clinical research and potentially clinical decision-making.

ABSTRACT Purpose There is limited evidence regarding the optimal timing of urosymphyseal fistula (USF) repair. Our aim was to conduct a comparative analysis evaluating the postoperative complications and surgical outcomes among patients undergoing surgery for USF, comparing those treated in an early versus delayed fashion. Methods Fifty‐eight patients with diagnosis of USF and who underwent fistula decompression, pubic bone resection, and urinary tract reconstruction were included. Patients who underwent USF repair within 100 days of diagnosis were classified as having early repair, while those treated after 100 days were considered to have delayed repair. Results Thirty‐one underwent delayed USF repair (53.4%), while 27 underwent early repair (46.6%). Most patients were male (96.8%). The median age (72 years vs . 69 years, p = 0.13) and mean BMI (28.7 vs . 28.6, p = 0.97) were comparable between groups. The rate of overall 90‐day complications following USF repair was comparable between groups (77.4% vs . 63%, p = 0.228). We did not find a difference between the rates early complications among groups. The rates of long‐term recurrent pain (46.7% vs . 11.1%, p = 0.004), recurrent osteomyelitis (20% vs . 0%, p = 0.014), and fistula (23.3% vs . 3.7%, p = 0.033) were higher in the delayed USF repair group compared to the early USF repair group. The follow up time was similar between groups too (25.43‐months vs . 32.8‐months, p = 0.257). Conclusion While early USF repair might not affect the incidence of early complications within 90 days post‐surgery, it is associated with reduced rates of long‐term recurrent pain, recurrent osteomyelitis, and fistula recurrence compared to delayed USF repair.

Background/Objectives: In the search for optimal meshes and matrices in breast surgery, poly-4-hydroxybutyrate (P4HB) has emerged as a promising alternative. This review evaluates the clinical application of P4HB scaffolds, focusing on complication rates and surgical outcomes. Methods: A systematic search was conducted using PubMed and ScienceDirect. Clinical studies assessing perioperative outcomes and complications associated with P4HB scaffolds in breast surgery were included. Results were stratified into aesthetic and reconstructive surgery categories. Meta-analysis was implemented to assess the rate of complications and satisfaction. Results: This systematic review included 13 studies evaluating the use of P4HB scaffold in breast reconstruction (636 cases) and aesthetic breast surgery (462 patients). Breast reconstruction studies were all retrospective, mainly reporting two-stage, prepectoral, immediate reconstructions. Aesthetic studies included both prospective and retrospective designs, with varied implant planes and incision patterns. P4HB use was associated with high satisfaction (95.5%) and favorable outcomes, including lower odds of wound complications (log-OR = −1.135, p = 0.003). Complication rates were low across both surgical categories. P4HB scaffold showed promise in supporting implant-based procedures and maintaining breast shape over time, with minimal increase in surgical time and stable anthropometric measurements. Conclusions: The use of P4HB scaffold in breast reconstruction and aesthetic surgery shows promising results, notably in reducing wound-related complications. Breast reconstruction studies report low complication rates and favorable patient-reported outcomes. In aesthetic procedures, P4HB contributes to improved long-term breast shape and high satisfaction. Despite encouraging findings, further research is necessary to validate long-term efficacy and refine surgical approaches.

ABSTRACTBackgroundTactile sensory recovery in autologous breast reconstruction (ABR) has been shown to prevent injuries and improve quality of life. However, the studies comparing neurotized versus non‐neurotized outcomes are still controversial due to methodological heterogeneity. This review uses consistent and objective outcomes to evaluate the current evidence's qualitative characteristics and quantitative tactile sensory recovery.MethodsWe conducted a systematic electronic literature search from database inception through 10 February 2024, of the following databases: PubMed, Ovid MEDLINE, Embase, SCOPUS, and CINAHL to identify all studies reporting outcomes of tactile sensory recovery using the Semmes‐Weinstein Measuring scale in free‐flap ABR comparing neurotization versus non‐neurotization. The SWM scale score, demographic characteristics, and surgical features were extracted from each study. Due to the data heterogeneity within the studies, we transformed the data into means and pooled the qualitative information.ResultsWe identified 264 articles. After thorough screening, 12 fulfilled the inclusion criteria and were included in the qualitative synthesis. Finally, 7 were quantitatively analyzed with a total of 251 breasts that underwent ABR with free flap neurotization and 244 breasts without neurotization. This revealed a mean SWM score difference of −0.67 and a significant p‐value < 0.05. A subgroup DIEP flap analysis performed for 177 neurotized compared to 175 non‐eurotized flaps yielded a significant mean difference of −0.86 p < 0.05. There were no significant differences between groups in age (48.8 vs. 49.8, p = 0.5), history of chemotherapy (72 vs. 74, p = 0.91), radiotherapy (61 vs. 56, p = 0.84), or follow‐up time (21.85 vs. 25.09 months, p = < 0.05) that could have influenced tactile sensory recovery.ConclusionNeurotization in free‐flap ABR could allow better tactile sensory recovery than the spontaneous sensation gained without it. The additional surgical time required for coaptation is short, and no studies have reported associated complications, making it a safe procedure that can potentially improve patients´ quality of life. Nonetheless, higher‐quality studies, such as randomized control trials with standardized sensation testing and more rigorous methodologies, are needed before making final clinical recommendations.

Abstract The vasa vasorum of the superficial collecting lymph vessel (VCL) has been reported to show morphological changes in lymphedematous limbs. This study aimed to develop a pathophysiological severity staging of the superficial collecting lymph vessels (SCLs) based on VCL morphology. A retrospective review was conducted using the medical charts of lower extremity lymphedema patients who underwent video‐capillaroscopy (VC) during lymphaticovenular anastomosis (LVA). Intraoperative SCLs were evaluated using VC at 175× and 620× magnifications. The VCL stage was determined based on VCL morphology observed under VC. D2‐40 (podoplanin) staining was assessed with a score of 0 for negative, 1 for mildly positive, and 2 for strongly positive. Red blood cell (RBC) movement was scored as 1 for movement and 0 for no movement. A total of 32 patients with 104 SCLs were evaluated. The distribution of VCL stages was as follows: Stage 0 in 4 SCLs (3.8%), Stage 1 in 16 SCLs (15.4%), Stage 2 in 18 SCLs (17.3%), Stage 3 in 36 SCLs (34.6%), Stage 4 in 20 SCLs (19.2%), and Stage 5 in 10 SCLs (9.6%). A significant difference was observed in the prevalence of lymphosclerosis grade according to the VCL stage ( p = 0.002). Among the VCL stages (Stage 1 vs. 2 vs. 3 vs. 4 vs. 5), a higher VCL stage was significantly associated with lower positivity to D2‐40 staining of the SCL ( p < 0.001), as well as with lower positivity to RBC movement in both the main VCL ( p < 0.001) and the branch VCL ( p < 0.001). These findings indicate that the progression of the VCL stage is associated with pathologic changes in the SCLs and physiological deterioration of the VCLs, highlighting the significance of the VCLs in the progression of lymphedema.

Background: Primary lymphedema is a chronic condition caused by a developmental abnormality of the lymphatic system, leading to its malfunction. Various surgical options, including physiologic and excisional procedures, have been proposed. The aim of this study was to present a comprehensive algorithm for the treatment of primary lower extremity lymphedema: the Primary LYmphedema Multidisciplinary Approach (P-LYMA). Methods: Nineteen patients were treated following the P-LYMA protocol. Patients underwent pre- and postoperative complex decongestive therapy (CDT). A variety of physiologic and excisional procedures were performed, either independently or in combination. The primary outcome was to assess the circumferential reduction rate (CRR). The Lymphedema Quality of Life Score (LeQOLiS), reduction in the number of cellulitis episodes, and complications were recorded. Results: The mean CRR was 73 ± 20% at twelve months postoperatively. The frequency of cellulitis episodes per year decreased from a mean of 1.9 ± 0.8 preoperatively to 0.4 ± 0.6 during follow-up. Two patients experienced minor complications. The mean hospitalization time was 5 days. Patients’ quality of life, as measured by the LeQOLiS, significantly improved from 70.4 ± 12 preoperatively to 24 ± 14 at twelve months postoperatively. Conclusions: The P-LYMA algorithm maximizes surgical outcomes and improves the quality of life in patients with primary lymphedema. CDT is essential for optimizing results.

Background: There is an increasing demand for body contouring and gender-affirming surgeries, and so is the need to compare outcomes between techniques. Gender dysphoria is a discrepancy between gender identity and the sex assigned at birth. One way to address this is to perform procedures to enable patients to look according to their desired gender identity. Gaps in knowledge regarding the best approaches and which surgical techniques yield the most patient satisfaction remain. This article summarizes up-to-date studies, including upper and lower body contouring procedures. Methods: A systematic review was performed using terms related to body contouring in gender-affirming surgery for transgender patients. All articles included surgical and patient-reported outcomes following either chest or lower body contouring procedures. Results: 15 studies, including trans male chest wall contouring, trans female breast augmentation, and lower body contouring, with 1811 patients, fulfilled the inclusion criteria. The double incision (DI) techniques consistently resected more tissue and had better BODY Q scores than non-overweight patients. Bleeding was increased in periareolar, semicircular, and obese patients with DI techniques. Nipple depigmentation and sensation loss were more common with double-incision-free nipple graft techniques (DIFNG). Lower body contouring patients had average implant sizes bigger than 200 mL and reported 2 gluteal implant displacements, 1 exposure, and one rupture. Eight percent of patients who underwent large-volume fat grafting reported dissatisfaction due to fat reabsorption. Conclusions: The debate between the double incision and periareolar techniques continues. Variations of the DIFNG technique continue to be the most common approach; however, nipple depigmentation and loss of sensation are also more common with it. Regarding increased bleeding with periareolar techniques, there is still no evidence that hormonal therapy may be playing a role in it. For lower-body trans female contouring, implants could help with the longevity of contouring results in patients needing large-volume fat grafting. There is an increasing evaluation of gender-affirming body contouring patient-reported outcomes; however, there is still a need for a validated way to report satisfaction scores in lower body contouring. Validated surveys could help identify surgical candidates based on satisfaction patterns, specifically for transgender and non-binary patients.

Abstract Background Posttraumatic lymphedema develops more frequently than expected and reports on its management are scarce in the literature. We aimed to report the clinical outcomes of a case series of posttraumatic lymphedema patients treated with different vascularized lymph node transfers (VLNTs). Patients and Methods Five patients with secondary posttraumatic lower limb lymphedema treated with VLNT were included in this report. The groin-VLNT (n = 1), supraclavicular-VLNT (n = 2), and gastroepiploic-VLNT (n = 2) were implemented. The average flap area was 69.8 cm2. Patients underwent postoperative complex decompressive therapy for an average of 10.0 months. Results The average mean circumference reduction rate was 24.4% (range, 10.2–37.6%). Postsurgical reduction in the number of infection episodes per year was observed in all patients. The mean follow-up was 34.2 months. Conclusions VLNT is a promising surgical treatment for posttraumatic lymphedema patients. In our report, VLNT has demonstrated to reduce the volume and number of infections per year in posttraumatic lymphedema.

AbstractBackground Abdominal wall vascularized composite allotransplantation (AW-VCA) is a novel reconstructive technique used for large abdominal wall defects in combination with intestinal transplantation (ITx) or multivisceral abdominal transplantation (MVTx). Since the introduction of this procedure, several studies have been published reporting their experience. This study aims to present a scoping review looking at all available evidence-based medicine information to understand the most current surgical techniques and clinical outcomes.Methods This scoping review followed the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) extension for scoping reviews checklist. A comprehensive research strategy of several databases was conducted.Results A total of 31 studies were included in this review, which comprised animal, cadaveric, and human studies. In human studies, four surgical techniques with high flap survival rates and low complication rates were found. In cadaveric studies, it was shown that the use of iliofemoral cuff-based flaps provided adequate tissue perfusion to the abdominal wall graft. Also, the use of thoracolumbar nerves have been described to provide functionality to the AW-VCA and prevent long-term muscle atrophy.Conclusion AW-VCA is a safe and efficient alternative for patients with large and complex abdominal wall defects. The future holds a promising evolution of a functional AW-VCA, though surgeons must face and overcome the challenge of distorted anatomy frequently present in this population. Forthcoming studies with a better level of evidence are required to evaluate functionality and differences between surgical techniques.