Risk Factors for Wound Complications After Soft Tissue Sarcoma Resection

Optimizing Morbidity in Unplanned Soft Tissue Sarcoma Excisions: Should We Skip the Reconstructive Ladder?

INTRODUCTION

Soft tissue sarcomas (STSs) are rare and diverse primary malignant tumors that comprise approximately 1% of all malignancies. Misdiagnoses and unplanned excisions of STSs are common due to the tumor's rarity, leading to secondary tumor bed excisions (TBEs). Reconstructive outcomes for TBEs remain poorly understood, prompting this study to address the knowledge gap and inform preoperative discussions.

METHODS

This was a retrospective cohort study of patients who underwent STS excisions at a quaternary cancer center. Patients were categorized into mass excision (ME) and TBE groups. Reconstructive approaches were divided into simple (primary closure, complex repair, skin grafts, local flaps) and advanced (pedicled or free flaps). The groups were compared for postoperative outcomes, including complications, recurrence, and death.

RESULTS

When simple reconstructive techniques were used, TBEs exhibited higher rates of overall and major complications, whereas MEs had higher rates of overall and minor complications. Intergroup analysis revealed that with simple reconstruction, rates of overall and major complications were higher in TBEs than in MEs, and rates of minor complications were higher in MEs than in TBEs. Regression analyses revealed that simple reconstruction of TBEs had 90% and 180% higher odds of major complications and reoperation compared to simple reconstruction of MEs ( P < 0.05).

CONCLUSION

TBEs, despite their smaller size, exhibited a heightened susceptibility to overall and major complications, challenging the notion that simpler techniques suffice in these cases. Our findings encourage the consideration of advanced reconstructive techniques for TBEs that may seem amenable to simple reconstructive techniques.

Sarcoma Size and Limb Dimensions Predict Complications, Recurrence, and Death in Patients with Soft Tissue Sarcoma in the Thigh: A Multidimensional Analysis

BACKGROUND

Limb-sparing resections of thigh soft tissue sarcomas (STSs) can result in adverse outcomes. Identifying preoperative predictors for wound healing complications, tumor recurrence, and mortality is crucial for informed reconstructive decision-making. We hypothesized that preoperative measurements of thigh and tumor dimensions could serve as reliable indicators for postoperative complications, recurrence, and death.

PATIENTS AND METHODS

In this retrospective cohort study conducted from March 2016 to December 2021, we analyzed patients undergoing thigh STS excisions followed by reconstruction. Preoperative magnetic resonance imaging or computed tomography scans provided necessary thigh and tumor dimensions. Univariate and multivariate regression assessed relationships between these dimensions and postoperative outcomes, including complications, recurrence, and death.

RESULTS

Upon the analysis of 123 thighs, we found thigh width to be highly predictive of postoperative complications, even surpassing body mass index (BMI) and retaining significance in multivariate regression [odds ratio (OR) 1.19; 95% CI 1.03-1.39; p = 0.03]. Sarcoma-to-thigh width and thickness ratios predicted STS recurrence, with the thickness ratio retaining significance in multivariate regression (OR 1.03; 95% CI 1.001-1.05; p = 0.041). Notably, greater thigh thickness was independently protective against mortality in multivariate analysis (OR 0.80; 95% CI 0.65-0.98; p = 0.030).

CONCLUSIONS

Thigh width outperformed BMI in association with postoperative complications. This may create an opportunity for intervention, where weight loss can play a role during the neoadjuvant therapy period to potentially reduce complications. Sarcoma-to-thigh width and thickness ratios, particularly the latter, hold substantial predictive value in terms of STS recurrence. Moreover, thigh thickness is an independent predictor of survival.

Wound healing after surgery for soft tissue sarcomas, and the effect of primary plastic reconstruction - A retrospective cohort study

BACKGROUND

Immediate vascularized reconstruction after sarcoma resection may reduce wound complications common in primary closure, but previous research is conflicting. The present study analysed wound complication rates and compared wound-related outcomes among immediate vascularized reconstruction with primary closure.

MATERIALS AND METHODS

Patient- and tumour characteristics were collected from patients who received primary surgery with curative intent between 2010 and 2020 at the Stockholm Sarcoma Centre. Clinical outcomes were sought in free text in medical records. The primary outcome measures were early (<30 days) wound complications. Secondary outcome measures included late (30-day to 2-year) wound complications, time to wound healing, 30-day postoperative complications according to Clavien Dindo, and health care consumption.

RESULTS

A total of 482 patients were included, of whom 69 had immediate vascularized reconstruction. Comparison of early complications for reconstructive surgery with primary closure revealed a significantly higher complication rate for the first group (59.4 % vs 29.8 %, p < 0.01). The groups had comparable health care consumption the first and second postoperative years. In-depth analyses identified BMI >25, smoking and high-grade lesions as factors with adverse effects on wound healing.

CONCLUSIONS

Sarcoma patients experience high rates of wound complications and consume considerable health care resources. Reconstructed individuals were more susceptible to such complications than were subjects with primary closure.

When to ditch the ladder and take the elevator: The Anderson SArcoma Risk of Complications (A-SARC) score to guide reconstructive decision-making in extremity soft tissue sarcoma patients

BACKGROUND

The reconstructive ladder relies mostly on defect size and depth to determine reconstructive technique, however, in actuality, many more variables ultimately inform reconstructive decision making, especially regarding extremity soft tissue sarcoma (eSTS) defects. The purpose of this study was to describe eSTS patients who will most optimally benefit from an advanced method of reconstruction (defined as a pedicled regional flap or free flap) and to create a simple risk assessment scale that can be employed in clinical practice.

STUDY DESIGN

A single-institution retrospective cohort study examined patients undergoing resection of soft tissue sarcoma affecting the upper or lower extremities between 2016 and 2021. We categorized patients who required a pedicled or free flap as having had advanced reconstruction, and all other techniques were considered simple reconstruction. A regression was used to create a risk scale to guide reconstructive decision-making.

RESULTS

The following variables were identified as independent predictors of complications and used to create our risk scale: lower extremity tumor location, preoperative radiotherapy, tumor bed excision, male sex, hypertension, and tumor volume. Intermediate and high-risk patients reconstructed using simple techniques had significantly greater overall complication rates compared to those reconstructed with advanced techniques. Major complications were significantly greater in low-risk patients reconstructed with advanced techniques.

CONCLUSIONS

To minimize postoperative wound complications, low-risk patients should receive simple methods of reconstruction, whereas high-risk patients should be reconstructed using advanced techniques.

A Systematic Review of the Orthoplastic Approach in Adult Lower Extremity Soft Tissue Sarcoma Flap Reconstruction

BACKGROUND

The orthoplastic approach to patient care has changed the way patients with a wide variety of lower extremity pathology are treated. Through a systematic review, we aim to analyze outcomes in adult patients with lower extremity soft tissue sarcomas who undergo an orthoplastic flap management approach to their care.

METHODS

A systematic review of adult lower extremity soft tissue sarcoma excision with plastic surgery flap reconstruction was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines searching the Pubmed, Embase, and Web of Science databases from inception to April 2023.

RESULTS

After removal of duplicates, title and abstract screening, and full-text review, 26 articles were accepted for inclusion. The total mean follow-up duration was 32.0 ± 24.3 months. Reconstruction used microvascular free flaps in 65.5% (487/743), while 34.5% (256/743) were local flaps. 85.8% (307/358) of patients ambulated postoperatively. Revision surgery was required in 21% of patients during their respective follow-up periods. The limb salvage rate was 93.4% (958/1,026). Among pooled surgical outcomes, 22.2% (225/1,012) of patients experienced a perioperative complication.

DISCUSSION

Our study demonstrates that although complication rates in lower extremity soft tissue sarcoma reconstruction may be further optimized, a multidisciplinary flap reconstructive approach provides high rates of limb salvage and functional postoperative ambulation.

Complications after limb salvage surgeries for musculoskeletal malignancies: 10-year experience of the main sarcoma center in Bulgaria

INTRODUCTION

Limb salvage surgery is currently the most frequently used treatment option in Bulgaria for individuals with musculoskeletal malignancies. Clinical data about complications from these procedures is limited in the country, with only a few studies currently available.

Immediate Plastic Surgery Intervention after Soft Tissue Sarcoma Resection: Examining Wound Healing, Readmission, and Reoperation

Many orthopedic and surgical oncologists use a multidisciplinary approach to soft tissue sarcoma (STS) resection. This study assesses the role of immediate plastic surgeon involvement during index soft tissue sarcoma resection.

Methods

Adult patients who underwent index STS resection between 2005 and 2018 were queried from an institutional database. Main outcomes analyzed were 90-day same-site reoperation, any-cause readmission, and wound healing complications. Univariate and multivariate logistic regression were used to identify risk factors. Additional evaluation was then performed for the following two cohorts: patients with and without plastic surgeon involvement.

Results

In total, 228 cases were analyzed. Multivariate regression demonstrated the following predictors for 90-day wound-healing complications: plastic surgery intervention [OR = 0.321 (0.141-0.728), P = 0.007], operative time [OR = 1.003 (1.000-1.006), P = 0.039], and hospital length of stay [OR = 1.195 (1.004-1.367), P = 0.010]. For 90-day readmission, operative time [OR = 1.004 (1.001-1.007), P = 0.023] and tumor stage [OR = 1.966 (1.140-3.389), P = 0.015] emerged as multivariate predictors. Patients whose resection included a plastic surgeon experienced similar primary outcomes despite these patients having expectedly longer operative times (220 ± 182 versus 108 ± 67 minutes, P < 0.001) and hospital length of stay (3.99 ± 3.69 versus 1.36 ± 1.97 days, P < 0.001).

Conclusions

Plastic surgeon involvement emerged as a significant protector against 90-day wound healing complications. Cases that included plastic surgeons achieved similar complication rates in all categories relative to cases without plastic surgery intervention, despite greater operative time, hospital length of stay, and medical complications.

Re-excision After Unplanned Excision of Soft Tissue Sarcoma is Associated with High Morbidity and Limited Pathologic Identification of Residual Disease

BACKGROUND

Patients with unplanned excision (UPE) of trunk and extremity soft tissue sarcoma (STS) present a significant management challenge for sarcoma specialists. Oncologic re-resection has been considered standard practice after UPE with positive or uncertain margins. A strategy of active surveillance or "watch and wait" has been suggested as a safe alternative to routine re-excision. In this context, the current study sought to evaluate short-term outcomes and morbidity after re-resection to better understand the risks and benefits of this treatment strategy.

METHODS

A retrospective, single-institution study reviewed patients undergoing oncologic re-resection after UPE of an STS during a 5-year period (2015-2020), excluding those with evidence of gross residual disease. Short-term clinical outcomes were evaluated together with final pathologic findings.

RESULTS

The review identified 67 patients undergoing re-resection after UPE of an STS. Of these 67 patients, 45 (67%) were treated with a combination of external beam radiation therapy (EBRT) and surgery. Plastic surgery was involved for reconstruction in 49 cases (73%). The rate of wound complications after re-resection was 45 % (n = 30), with 15 % (n = 10) of the patients experiencing a major wound complication. Radiation therapy and plastic surgery involvement were independently associated with wound complications. Notably, 45 patients (67%) had no evidence of residual disease in the re-resection specimen, whereas 13 patients (19 %) had microscopic disease, and 9 patients (13%) had indeterminate pathology.

CONCLUSION

Given the morbidity of re-resection and limited identification of residual disease, treatment plans and discussions with patients should outline the expected pathologic findings and morbidity of surgery.

Value of Drains in Soft-Tissue Tumour Surgery: A Specialist Regional Centre Experience

Background The mainstay of therapy in most soft-tissue tumours (STTs) is excision. However, this often results in blood/extracellular fluid collection within large dead spaces necessitating the use of surgical drains. Whether meticulous attention to haemostasis, careful closure of dead space, and use of compression bandage obviates the need for drains was investigated. This study aimed to compare postoperative outcomes in patients undergoing surgery for STTs with and without the use of drains. Methodology A retrospective analysis of patients undergoing STT surgery over five years was undertaken using a regional STT specialist service database. Patients were stratified into the following two groups: compression bandage alone (CB) versus compression bandage with drain (CBD). The chi-square test was used to examine associations with infection, seroma, and haematoma, while the unpaired t-test was used for associations with hospital stay and time to wound healing. The unpaired t-test with Bonferroni correction was used to account for tumour dimensions across both groups. Results A total of 81 CB and 25 CBD patients were included. The mean hospital stay was significantly lower in CB compared to CBD (4.9 days, SD = 8.574 vs. 9.8 days, SD = 7.647, p = 0.0125). None of the other variables was significantly different between the two groups, including infection (21.3% vs. 24.0%, p = 0.7804), seroma (25.0% vs. 36.0%, p = 0.2865), haematoma (0.026% vs. 2.0%, p = 0.2325), and time to wound healing (55.8 days, SD = 63.59 vs. 42.3 days, SD = 58.88, p = 0.3648). Conclusions Our findings suggest that the use of drains in patients undergoing STT tumour surgery lengthens hospital stay without reducing the incidence of postoperative complications/time to wound healing. A larger, prospective trial is needed.

Practical Strategies in Reconstruction of Soft-Tissue Sarcoma

LEARNING OBJECTIVES

After studying this article, the participant should be able to: 1. Discuss the natural history and pathophysiology of sarcoma. 2. Summarize the most up-to-date multidisciplinary management of soft-tissue sarcoma. 3. Provide a synopsis of reconstructive modalities based on anatomical location. 4. Highlight some novel strategies for treatment of lymphedema and phantom limb pain that are common sequelae following treatment and resection of soft-tissue sarcomas.

SUMMARY

The management of soft-tissue sarcoma presents unique challenges to the reconstructive surgeon. The optimal management mandates a multidisciplinary approach; however, reconstruction must take into account the extent of the resection and exposed vital structures, but often occurs in the setting of adjuvant treatments including chemotherapy and radiation therapy. Reconstruction is based on the extent of the defect and the location of the primary tumor. As such, an evidence-based, algorithmic approach following the reconstructive ladder is warranted to minimize the risks of complications and maximize success, which varies from head and neck to torso to breast to extremity sarcomas. Aside from reconstruction of the defect, advances in the surgical treatment of lymphedema and neuropathic pain resulting from treatment and extirpation of soft-tissue sarcoma are critical to maintain function and patients' quality of life.

Nutritional Predictors of Wound Infection in Patients with Lower Extremity Soft Tissue Sarcoma

BACKGROUND

Soft tissue sarcoma (STS) frequently requires high-risk surgery that predisposes patients to complex wounds. Past studies have identified a variety of tumor characteristics as risk factors for wound infection (WI); however, physiologic characteristics have not yet been studied in this population. Thus, the objective of this study is to identify any nutritional indicators and physiologic characteristics associated with the development of WI.

PATIENTS AND METHODS

633 patients from a large tertiary care center institution were identified with lower extremity STS removed from 1992 to 2017. The primary outcomes of interest were WI at patient's surgical site within 90 days of surgery and additional procedure due to wound infection. Patients' laboratory values, comorbidities, and other characteristics were assessed using multivariable analysis to determine risk factors for WI. Receiver operator characteristic (ROC) curves were used for analysis of plasma glucose and albumin levels to determine a useful risk threshold. Significance was determined to be p < 0.05.

RESULTS

Postoperative plasma glucose levels were significantly higher among patients with WI compared with those without (p < 0.001) and showed predictivity in ROC analysis (AUC 0.77, 95% CI 0.72-0.82). Preoperative albumin (p < 0.001) and prognostic nutritional index score (p = 0.002) were significantly lower among patients with WI. Partial thromboplastin time (PTT), international normalized ratio (INR), white blood cell count (WBC), and platelet count values had no effect on WI. Smoking elevated risk for WI (OR 1.64, p < 0.01). Significant risk factors were the same when assessed for those with WI undergoing additional procedures.

CONCLUSIONS

Postoperative plasma glucose levels, preoperative albumin levels, and smoking status are useful nutritional variables in predicting WI in STS excisional procedures.