Correlation between patency and clinical improvement after lymphaticovenous anastomosis (LVA) in breast cancer-related lymphedema: 12-month follow-up

Lymphovenous anastomosis and complex decongestive therapy for severe deformed lymphedema with recurrent infection: A case report

BACKGROUND

Lower extremity lymphedema is a common complication following treatment for gynecological malignancies. Its incidence rate can reach up to 70%, affecting ~20 million people worldwide. However, specialized treatment centers are scarce, and there is a lack of consensus on treatment approaches. Furthermore, there are even fewer reports on the systematic and effective treatment of severe lymphedema with malformations. Effective management of this condition remains a significant challenge for clinicians.

CASE SUMMARY

A 40-year-old woman developed bilateral leg swelling 6 years after receiving treatment for endometrial cancer. Since August 2018, she experienced > 30 episodes of lymphangitis. Upon presentation, she exhibited bilateral leg swelling and deformation, with four large swellings in the posterior thigh that impeded movement, and pain in the limbs. Skin manifestations included lichenoid lesions and features of deep sclerosis. Radionuclide lymphoscintigraphy confirmed the diagnosis of lower limb lymphedema. After 6 mo of complex decongestive therapy (CDT) and three lymphaticovenous anastomosis (LVA) treatments, the patient lost 49 kg in weight. She also experienced a maximum circumference reduction of 35.2 cm in the left lower limb and 37.5 cm in the right lower limb. The leg pain disappeared, her swelling significantly decreased, and she regained the ability to walk, cycle, and run normally.

CONCLUSION

The combined application of CDT and LVA therapy demonstrates significant positive effects in the treatment of severe, deformed stage III lymphedema.

Identification of Potential Factors Associated with Cellulitis Following Lymphovenous Bypass Surgery in Breast Cancer Survivors

BACKGROUND

 Breast cancer is one of the most common types of cancer, with around 2.3 million cases diagnosed in 2020. One in five cancer patients develops chronic lymphedema caused by multifactorial triggers and treatment-related factors. This can lead to swelling, skin infections, and limb dysfunction, negatively affecting the patient's quality of life. This retrospective cohort study aimed to determine the associations between demographic and breast cancer characteristics and postoperative cellulitis in breast cancer survivors who underwent lymphovenous bypass surgery (LVB) at Mayo Clinic, Florida.

METHODS

 We performed a retrospective chart review. Data were collected retrospectively from 2016 to 2022. Sixty adult breast cancer survivors who underwent LVB were included in the final analysis based on specific inclusion and exclusion criteria. Patients were excluded if they did not meet the inclusion criteria or had incomplete follow-up data. Demographic and surgical data were extracted, including body mass index (BMI), type of anastomosis, number of anastomoses, and preoperative cellulitis status. Lymphedema measurements were performed using tape measurements. Fisher's exact test was used to determine statistically significant associations between variables and postoperative cellulitis.

RESULTS

 Postoperative cellulitis was more common in patients aged 60 to 69 years (43.2%), whites (75.0%), overweight or obese (90.9%), with one to four anastomoses (81.8%), and nonsmokers (79.5%). The mean International Society of Lymphology (ISL) criteria for both postoperative cellulitis and no postoperative cellulitis was 1.93. Statistically significant associations with postoperative cellulitis were found for the number of anastomoses (p = 0.021), smoking status (p = 0.049), preoperative cellulitis (p = 0.04), and the length of years with lymphedema diagnosis variable (p = 0.004).

CONCLUSION

 Our results suggest that a greater number of anastomoses, smoking, preoperative cellulitis, and years with lymphedema are significantly associated with an increased risk of postoperative cellulitis. Awareness of these risk factors is crucial for monitoring and early treatment of infections following surgery.

Surgical treatment algorithm for breast cancer lymphedema-a systematic review

Background

Various surgical treatments are increasingly adopted and gaining popularity for lymphedema treatment. However, challenges persist in selecting appropriate treatment modalities targeted for individual patients and achieving consensus on choice of treatment as well as outcomes. The systematic review aimed to create a treatment algorithm incorporating the latest scientific knowledge, to provide healthcare professionals and patients with a tool for informed decision-making, when selecting between treatments or combining them in a relevant manner. This systematic review evaluated and synthesized the evidence on the effectiveness of three surgical treatments for breast cancer-related lymphedema (BCRL): lymphovenous anastomosis (LVA), vascularized lymph node transfer (VLNT), and liposuction.

Methods

We conducted a systematic search of electronic databases on 18 June 2023, including Medline, Embase, Cochrane Library, Google Scholar, and ClinicalTrials.org. Eligible studies were randomized controlled trials, non-randomized comparative studies, and observational studies that assessed the outcomes of LVA, VLNT, or liposuction in managing BCRL. The primary results of interest were changes in arm volume, lymphatic flow, and quality of life. Two independent reviewers performed the study selection and data extraction. Following this, we systematically reviewed and conducted a risk of bias assessment. Results were qualitatively presented, and a treatment algorithm was developed based on the available data.

Results

We identified 16,593 papers, after removal of duplicates. Following assessment of studies, 73 articles met the inclusion criteria, including 2,373 patients. We were not able to conduct a meta-analysis due to considerable heterogeneity in the methodologies and outcome measures across the studies. Liposuction appears effective for patients presenting with non-pitting lymphedema. LVA indicates variable success rate, with some evidence indicating a reduction in limb volume and symptomatic relief amongst early stages of lymphedema. VLNT showed promising results for limb volume reduction and symptom improvement in patients presenting with mild and moderate lymphedema.

Conclusions

Liposuction, LVA, and VLNT seem to be effective treatments for BCRL, when targeted for the appropriate patient. Well-conducted high evidence clinical studies in the field are still lacking to uncover the efficacy of surgical treatment for BCRL.

Robot-assisted lymphovenous anastomosis surgery for lymphocele in the groin

We present the first-in-human robot-assisted microsurgery on a lymphocele in the groin involving a man in his late 60s who had been coping with the condition for 12 months. Despite numerous efforts at conservative treatment and surgical intervention, the lymphocele persisted, leading to a referral to our clinic.Diagnostic techniques, including indocyanine green lymphography and ultrasound, identified one lymphatic vessel draining into the lymphocele. The surgical intervention, conducted with the assistance of a robot and facilitated by the Symani Surgical System (Medical Microinstruments, Calci, Italy), involved a lymphovenous anastomosis and excision of the lymphocele. An end-to-end anastomosis was performed between the lymphatic and venous vessels measuring 1 mm in diameter, using an Ethilon 10-0 suture.The surgery was successful, with no postoperative complications and a prompt recovery. The patient was discharged 3 days postoperatively and exhibited complete recovery at the 14-day follow-up. This case marks the first use of robot-assisted microsurgical lymphovenous anastomosis to address a groin lymphocele, highlighting the benefit of advanced robotic technology in complex lymphatic surgeries.

Surgical Treatment of Lymphedema in the Upper Extremity

The advent of supermicrosurgery has led to an increasing interest in the surgical management of lymphedema through the reconstruction of the lymphatic network, that is, the physiologic approach. Broadly, this can be divided into 2 main techniques: lymphaticovenous anastomosis and lymph node transfer. In the United Kingdom, the British Lymphology Society does not provide any recommendations on surgical management. Moreover, surgical treatment of lymphedema is not widely practiced within the National Health Service due to low-certainty evidence. Herein, we discuss our experience in physiologic reconstruction for lymphedema.

Improving quality of life after breast cancer: a comparison of two microsurgical treatment options for breast cancer-related lymphedema (BCRL)

PURPOSE

Vascularized lymph node transfer (VLNT) entails the autologous relocation of lymph nodes to a lymphedematous region of the body, whereas lymphaticovenous anastomosis (LVA) creates a direct bypass between the lymphatic and venous system. Both techniques are meant to lastingly bolster the local lymphatic drainage capacity. This study compared safety and effectiveness of VLNT and LVA in patients with chronic breast cancer related lymphedema (BCRL).

METHODS

A retrospective cohort study was conducted using data from our encrypted database composed of patients with chronic BCRL who were treated with either VLNT or LVA and had a minimum follow-up of two years. Patient-specific variables analyzed included pre- and postoperative arm circumferences, lymphedema stages and postoperative complications.

RESULTS

A total of 105 patients met the inclusion criteria, of which 96 patients demonstrated a complete follow-up period of two years. The VLNT group displayed larger preoperative circumferential measurements, evident in both in the isolated examination of the affected arm, as well as when adjusted for the contralateral unaffected arm. Significant reduction in arm volume was achieved by both groups. However, VLNT demonstrated superior relative reduction rates than LVA, neutralizing any significant arm size disparities after 24 months. Surgery duration was slightly longer for VLNT than LVA. Postoperative complications, predominantly minor, were exclusively observed in the VLNT group.

CONCLUSIONS

Both VLNT and LVA offer significant improvement for patients suffering from chronic BCRL. VLNT shows an even greater potential for improvement in more severe cases of BCRL, but involves a higher risk for (mostly minor) complications.

The 6 month interim analysis of a randomized controlled trial assessing the quality of life in patients with breast cancer related lymphedema undergoing lymphaticovenous anastomosis vs. conservative therapy

Breast cancer related lymphedema (BCRL) is a chronic condition with a detrimental impact on psychosocial and physical well-being. Lymphaticovenous anastomosis has shown promising results in alleviating physical symptoms and increasing quality of life in patients with BCRL. The aim of the study is to evaluate the effect on health related quality of life (HrQol) after LVA surgery versus conservative treatment in patients with BCRL. The study is a prospective, multicenter randomized controlled trial. Adult women with unilateral BCRL, with early stage lymphedema and viable lymphatic vessels were included. The primary outcome measure was HrQol measured by the lymphedema functioning disability and health (Lymph-ICF) questionnaire. The secondary outcomes were volume difference measured by the water displacement method; the Upper Extremity Lymphedema (UEL) index; and daily use of the compression garments after 3 and 6 months. For this interim analysis 46 patients per group were included. There was a significant improvement in the domains in physical and mental function in the Lymph-ICF questionnaire in the LVA group after 6 months, (- 16.46 ± 18.5, p < 0.05, - 10.12 ± 29.5, p < 0.05 respectively). However, there was no statistical difference in the total score of the Lymph-ICF after 6 months in both groups (LVA-group; - 8.57 ± 22.6, p > 0.05, CDT-group; - 2.65 ± 18.2, p < 0.05). Furthermore, there was no significant volume reduction in both groups (LVA-group: 20.04 ± 196.40, p = 0.497, CDT: 33.98 ± 189.87, p = 0.236). In the LVA group, 41% partially of completely stopped wearing the compression garments after six months whereas in the CDT group 0% discontinued to use of compression garments. LVA resulted in improvement of the domains physical and mental function of the Lymph-ICF. Limb volume did not significantly improve after 6 months. However, around 42% could completely or partially stopped with the use of compression garments in the LVA group. The current results are promising, however longer follow up is required to assess long term effect of LVA for secondary lymphedema. Clinical Trial Registration: NCT02790021 registered on 03/06/2016.

Combined perforator flaps and lymphatic procedures in reconstructions after sarcoma resection

BACKGROUND

Soft tissue sarcomas are a subtle category of tumors that often require an extensive surgical resection for definitive treatment. This kind of intervention inevitably leads to large tissue damage and, when regions with rich lymphatic network are involved, postoperative complications such as lymphocele or lymphedema are quite common. In this report we present our experience with the combination of lymphatic procedures with perforator flaps for defects reconstruction and lymphatic complications preventions after sarcoma resection throughout the body.

METHODS

Between 2019 and 2021, 15 patients underwent a surgical resection of soft tissue sarcoma, also including bone tissue in 2 cases, requiring soft tissue reconstruction. A perforator flap reconstruction surgery was performed in all cases. The median age was 59.8 years old (ranging 23-84), 8 patients were females and 7 were males. The lymphovenous anastomosis (LVA) surgery concept was applied to all cases, while other additional lymphatic procedures were chosen individually for every patient.

RESULTS

All patients were successfully treated without any perioperative complications. In 3 cases infected seroma was encountered in the acceptor site and then successfully treated by means of debridement and vacuum assisted closure (VAC) therapy. 2 patients experienced postoperative lymphedema in the acceptor site which was managed by secondary procedures. Good functional and aesthetic outcomes were achieved in all cases. The mean follow-up was 19.6 months (range 10-33 months).

CONCLUSIONS

Different combinations of modern lymphatic procedures can be created to find the best solution and tailor the treatment to the patient's needs. Preventative measures regarding lymphatic complications can be highly effective and should be taken into consideration in every reconstructive approach following large soft tissue defects with impairment of the lymphatic network.

Efficacy of Lymphaticovenular Anastomosis for Secondary Upper Extremity Lymphedema: Treatment Strategies with Effects of Compression Therapy Discontinuation and Site-Specific Evaluation of the Upper Extremity

Background: Lymphaticovenular anastomosis (LVA) has recently become a mainstream surgical treatment for lymphedema and is a useful treatment option in addition to conservative therapies such as compression therapy, exercise therapy, and lymphatic drainage. We performed LVA with the goal of stopping compression therapy and report the effect of LVA on secondary lymphedema of the upper extremities. Methods and Results: The participants were 20 patients with secondary lymphedema of the upper extremities categorized as stage 2 or 3 according to the International Society of Lymphology classification. We measured and compared the upper limb circumference at six locations before and 6 months after LVA. Significant decreases in circumference after surgery were observed at 8 cm proximal to the elbow, the elbow joint, 5 cm distal to the elbow, and the wrist joints, but not at 2 cm distal to the axilla or the dorsum of the hand. At more than 6 months postoperatively, eight patients who had been wearing compression gloves were no longer required to wear them, and three patients who had been wearing both sleeves and gloves were no longer required to wear them. Conclusions: LVA is effective in the treatment of secondary lymphedema of the upper extremities, particularly in improving elbow circumference, and is one of the treatments that contributes significantly to the improvement of quality of life. For severe cases with limited range of motion of the elbow joint, LVA should be performed first. Based on these results, we present an algorithm for upper extremity lymphedema treatment.

Impact and outcomes after lymphaticovenous anastomosis for 150 cases of lymphoedema followed up over 24 months

BACKGROUND

Lymphoedema is a chronic condition affecting daily activities of life, causing significant alterations and adjustments. Since 2015, lymphaticovenous anastomosis (LVA) has been available on the National Health Service for people with lymphoedema in Wales, United Kingdom. This study aimed to explore the impact and outcomes after LVA over a 24-month follow-up.

METHODS

Data were prospectively captured before and after LVA surgery on 150 patients with unilateral upper or lower limb lymphoedema. The same team (three lymphoedema specialists and two plastic surgeons) assessed/operated on all patients. Data captured included a quality of life tool (EQ5D5L), circumferential measurements (tape measure/perometer), compression garment usage, occurrence of cellulitis and a range of patient-reported outcome measures.

RESULTS

People who underwent LVA surgery had predominantly cancer-related lymphoedema (n = 118). Reviewing baseline data and 24-months after LVA, quality of life statistically improved (p = <0.005), as well as pain, heaviness, anxiety, impact on hobbies, work, purchasing clothes and intimacy/desirability. Mean perometer and circumferential measurements did not reduce over the 24 months. Number of days per week and hours that the patient wore compression garments did lessen and was statistically significant (p = <0.001). The quantity of cellulitis episodes captured from two years before and two years after LVA decreased from 4.22 to 0.10 (p = <0.001). Significant results (p = <0.001) were also found in a reduction in patients taking days off work due to cellulitis (5.81 to 0.16).

CONCLUSION

LVA resulted in significant improvements in patient-reported outcome measures, cellulitis episodes and reduced need for compression garments. Limb circumference via tape measure/perometer did not alter, yet the patient's quality of life considerably improved.

Utilization of Noncontrast Magnetic Resonance Lymphangiography for Selection of Effective Surgical Method in Breast Cancer-Related Lymphedema

Background and Objectives: When considering surgery for patients with breast cancer-related lymphedema (BCRL), it is crucial to determine which surgery will be most effective for the patient and establish the indications for each surgery. Our study retrospectively compared the results of preoperative noncontrast MR lymphangiography (NMRL) performed on the lymphedematous limb of patients before surgery, with the aim of analyzing whether preoperative NMRL can be used as a criterion for determining the type of surgery. Materials and Methods: From January 2020 to June 2022, a total of 138 patients with lymphedema underwent surgery at Seoul National University Bundang Hospital. All patients underwent preoperative NMRL imaging and were classified into stages 1-3 based on the MRI severity index using the authors' previous reference. Three types of surgery, LVA, LVA + liposuction, and LVA + VLNT, were conducted on all patients. The effectiveness of the surgery was evaluated one year postoperatively using the interlimb volume difference before and after surgery, the fluid volume of the edematous limb measured by bioimpedance spectroscopy, and the subjective satisfaction of the patients through the Lymph Q questionnaire. Results: In this study, out of a total of 138 patients, 26 (19%) were MRI stage 1, 62 (45%) were stage 2, and 50 (36%) were stage 3. Of the 83 patients who underwent LVA surgery, the greatest decrease in interlimb volume difference was observed in stage 2 patients, and subjective satisfaction was also the most effective in stage 2. In the case of LVA + liposuction patients, a significant volume decrease and a high satisfaction were observed in stage 3 patients. In the case of LVA + VLNT patients, there was no difference in volume decrease according to the stage, but a greater decrease in body fluid volume was observed as the MRI severity index score increased through BIA. Conclusions: In conclusion, this study demonstrates that NMRL imaging is a useful modality for determining the most effective surgical method and predicting the surgical outcome in patients with lymphedema. This highlights the importance of using NMRL in the treatment planning of lymphedema patients.

Pre- and Post-Microsurgical Rehabilitation Interventions and Outcomes on Breast Cancer-Related Lymphedema: a Systematic Review

PURPOSE OF REVIEW

Breast cancer-related lymphedema (BCRL) is a debilitating progressive disease resulting in various impairments and dysfunctions. Complete decongestive therapy embodies conservative rehabilitation treatments for BCRL. Surgical procedures performed by plastic and reconstructive microsurgeons are available when conservative treatment fails. The purpose of this systematic review was to investigate which rehabilitation interventions contribute to the highest level of pre- and post-microsurgical outcomes.

RECENT FINDINGS

Studies published between 2002 and 2022 were grouped for analysis. This review was registered with PROSPERO (CRD42022341650) and followed the PRISMA guidelines. Levels of evidence were based upon study design and quality. The initial literature search yielded 296 results, of which, 13 studies met all inclusion criteria. Lymphovenous bypass anastomoses (LVB/A) and vascularized lymph node transplant (VLNT) emerged as dominant surgical procedures. Peri-operative outcome measures varied greatly and were used inconsistently. There is a dearth of high quality literature leading to a gap in knowledge as to how BCRL microsurgical and conservative interventions complement each other. Peri-operative guidelines are needed to bridge the knowledge and care gap between lymphedema surgeons and therapists. A core set of outcome measures for BCRL is vital to unify terminological differences in the multidisciplinary care of BCRL. Complete decongestive therapy embodies conservative rehabilitation treatments for breast cancer-related lymphedema (BCRL). Surgical procedures performed by microsurgeons are available when conservative treatment fails. This systematic review investigated which rehabilitation interventions contribute to the highest level of pre- and post-microsurgical outcomes. Thirteen studies met all inclusion criteria and revealed that there is a dearth of high quality literature leading to a gap in knowledge as to how BCRL microsurgical and conservative interventions complement each other. Furthermore, peri-operative outcome measures were inconsistent. Peri-operative guidelines are needed to bridge the knowledge and care gap between lymphedema surgeons and therapists.

Lymphatic flow velocity is a predictor of functional lymphatic vessels for lymphaticovenous anastomosis

BACKGROUND

Indocyanine green (ICG) lymphography is widely used to localize functional lymphatic vessels for lymphaticovenous anastomosis (LVA); however, flow velocity is rarely assessed. We aimed to evaluate the correlation between lymphatic flow velocity and the presence of functional lymphatic vessels.

METHODS

Data of a total of 924 lymphatic vessels from 273 lymphedema patients who underwent LVA between July 2018 and December 2020 were retrospectively reviewed. Lymph flow velocity was defined by considering the most proximal anatomic location enhanced by ICG at 30 min after injection and categorized into four groups; grade 1 (foot or hand), grade 2 (below knee or elbow), grade 3 (at/above knee or eblow), or grade 4 (axilla or groin). The presence of functional lymphatic vessels, which showed lymphatic fluid flow when the vessels were cut for anastomosis, was compared between the four groups.

RESULTS

A higher rate of functional lymphatic vessels was observed among lymphatic vessels with grade 3 or 4 flow velocity compared with those with grade 1 or 2 flow velocity (67.5% vs. 44.5%; p < 0.001). These findings were consistent with the observations for lymphatic vessels with a non-linear pattern in ICG lymphography (59.4% vs. 26.5%; p < 0.001). The rate of completion of LVA at surgical sites in extremities with grade 3 or 4 flow velocity was 88.1% compared with 65.8% in extremities with grade 1 or 2 velocity (p < 0.001).

CONCLUSIONS

Lymph flow velocity grading can be a simple and easy adjunctive method to determine indication for LVA in extremities with lymphedema.

Outcomes after microsurgical treatment of lymphedema: a systematic review and meta-analysis

BACKGROUND

Microsurgical treatment options for lymphedema consist mainly of lymphovenous anastomosis (LVA) and vascularized lymph node transfers (VLNTs). There are no standard measurements of the effectiveness of these interventions and reported outcomes vary among studies.

METHODS

A systematic review and meta-analysis were performed based on a structured search in Embase, Medline, PubMed, Cinahl, Cochrane, and ProQuest in October 2020, with an update in February 2022. Firstly, a qualitative summary of the main reported outcomes was performed, followed by a pooled meta-analysis of the three most frequently reported outcomes using a random effects model. Randomized controlled trials, prospective cohorts, retrospective cohorts, and cross-sectional and case-control studies that documented outcomes following microsurgery in adult patients were included. Studies of other surgical treatments (liposuction, radical excision, lymphatic vessel transplantation) or without reported outcomes were excluded. The study protocol was registered on PROSPERO (International Prospective Register of Systematic Reviews) (ID: CRD42020202417). No external funding was received for this review.

RESULTS

One hundred fifty studies, including 6496 patients, were included in the systematic review. The qualitative analysis highlighted the three most frequently reported outcomes: change in circumference, change in volume, and change in the number of infectious episodes per year. The overall pooled change in excess circumference across 29 studies, including 1002 patients, was -35.6% [95% CI: -30.8 to -40.3]. The overall pooled change in excess volume across 12 studies including 587 patients was -32.7% [95% CI: -19.8 to -45.6], and the overall pooled change in the number of cutaneous infections episodes per year across 8 studies including 248 patients was -1.9 [95% CI: -1.4 to -2.3]. The vast majority of the studies included were case series and cohorts, which were intrinsically exposed to a risk of selection bias.

CONCLUSION

The currently available evidence supports LVA and vascularized lymph node transfers as effective treatments to reduce the severity of secondary lymphedema. Standardization of staging method, outcomes measurements, and reporting is paramount in future research in order to allow comparability across studies and pooling of results.

A meta-analysis of 37 studies on the effectiveness of microsurgical techniques for lymphedema

OBJECTIVES

Microsurgery is a new technique for lymphedema treatment. Its advantages and disadvantages remain controversial. This study sought to collect clinical data from patients who underwent lymphovenous bypass and vascularized lymph node transplantation to explore whether surgical procedures can effectively treat lymphedema.

METHODS

We performed a meta-analysis of the effectiveness of lymphatic microsurgery. We searched the databases of literature for articles in Chinese and English. These articles were graded for quality. Report details and outcomes were recorded. Data extraction, systematic review, and meta-analysis were performed.

RESULTS

Thirty-seven studies were included. Patients who underwent microsurgery had a significantly better chance of achieving an excellent result than patients who received conservative treatment (odds ratio=7.07). The affected limb circumference was reduced by approximately 44.68% after the microsurgery. After the microsurgery, 63% of the patients did not need physiotherapy, and 96% were free from painful skin infections. Lymphography showed that lymphatic transport capacity was enhanced. Moreover, 12% of the patients reported that edema reappeared in the long-term, 26% required reoperation for unsatisfactory results, and 32% experienced lymphatic leakage.

CONCLUSIONS

A vast majority of patients derive more benefit from lymphatic microsurgery than from conventional treatment. The advantages of lymphatic microsurgery outweigh the disadvantages for patients in the early and middle stages of chronic secondary lymphedema and patients in whom conventional treatment failed.

Lessons Learnt from an 11-year Experience with Lymphatic Surgery and a Systematic Review of Reported Complications: Technical Considerations to Reduce Morbidity

Complications experienced during lymphatic surgery have not been ubiquitously reported, and little has been described regarding how to prevent them. We present a review of complications reported during the surgical management of lymphedema and our experience with technical considerations to reduce morbidity from lymphatic surgery. A comprehensive search across different databases was conducted through November 2020. Based on the complications identified, we discussed the best approach for reducing the incidence of complications during lymphatic surgery based on our experience. The most common complications reported following lymphovenous anastomosis were re-exploration of the anastomosis, venous reflux, and surgical site infection. The most common complications using groin vascularized lymph node transfer (VLNT), submental VLNT, lateral thoracic VLNT, and supraclavicular VLNT included delayed wound healing, seroma and hematoma formation, lymphatic fluid leakage, iatrogenic lymphedema, soft-tissue infection, venous congestion, marginal nerve pseudoparalysis, and partial flap loss. Regarding intra-abdominal lymph node flaps, incisional hernia, hematoma, lymphatic fluid leakage, and postoperative ileus were commonly reported. Following suction-assisted lipectomy, significant blood loss and transient paresthesia were frequently reported. The reported complications of excisional procedures included soft-tissue infections, seroma and hematoma formation, skin-graft loss, significant blood loss, and minor skin flap necrosis. Evidently, lymphedema continues to represent a challenging condition; however, thorough patient selection, compliance with physiotherapy, and an experienced surgeon with adequate understanding of the lymphatic system can help maximize the safety of lymphatic surgery.

Imaging biomarkers for diagnosis and treatment response in patients with lymphedema

Lymphedema is defined as a dysfunction of the lymphatic system producing an accumulation of lymphatic fluid in the surrounding tissue, as well as edema and fibrosis. A total of 250 million people worldwide are affected by this condition. Greater than 99% of these cases are related to a secondary cause. As there is a lack of curative therapy, the goal involves early diagnosis, in order to prevent the progression of the disease. Additionally, early diagnosis can aid in decreasing the demand for more complex surgical procedures. Currently, there is an impressive breadth of diagnostic tests available for these patients. We aimed to review the available literature in relation to the utilization of imaging biomarkers for the early diagnosis and treatment response in lymphedema.

One-Year Outcomes of the First Human Trial on Robot-Assisted Lymphaticovenous Anastomosis for Breast Cancer-Related Lymphedema

BACKGROUND

Lymphaticovenous anastomosis, a supermicrosurgical technique, creates bypasses between the lymphatic and venous systems. The quality of lymphaticovenous anastomosis depends on the surgeon's dexterity and precision, and is subject to imperfections caused by the physiologic tremor of the human hand. A dedicated robot for microsurgery has been created to overcome these limitations (MUSA, MicroSure, Eindhoven, The Netherlands). This study describes 1-year clinical outcomes of the first-in-human trial of robot-assisted and manual lymphaticovenous anastomosis in patients with breast cancer-related lymphedema.

METHODS

In this prospective pilot study, women with breast cancer-related lymphedema were randomized into the robot-assisted or manual lymphaticovenous anastomosis group. Outcomes were quality of life, arm circumference, conservative treatment frequency, arm dermal backflow stage, and anastomosis patency.

RESULTS

Twenty women were included, of whom eight underwent robot-assisted lymphaticovenous anastomosis surgery and 12 underwent manual surgery. In both groups, quality of life significantly improved at 12 months (robot-assisted surgery, p = 0.045; manual surgery, p = 0.001). Arm circumference did not decrease (robot-assisted surgery, p = 0.094; manual surgery, p = 0.240). Daily use of compression garments decreased by 61.9 percent (robot-assisted surgery) and 70.2 percent (manual surgery). The frequency of manual lymphatic drainage remained similar compared with baseline. Arm dermal backflow stage was reduced in one patient in the robot-assisted group and in five cases in the manual group. Overall, 76.5 percent of the anastomoses were patent (robot-assisted surgery, 66.6 percent; manual surgery, 81.8 percent).

CONCLUSIONS

After evaluating 1-year follow-up data, this study confirms the feasibility of robot-assisted lymphaticovenous anastomosis surgery. Clinical outcomes were comparable between robot-assisted and manual lymphaticovenous anastomosis. This encourages further research using the new microsurgical robot MUSA for lymphaticovenous anastomosis and other (super)microsurgical procedures.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, II.

Advances in Lymphedema

Lymphedema is a common, complex, and inexplicably underappreciated human disease. Despite a history of relative neglect by health care providers and by governmental health care agencies, the last decade has seen an explosive growth of insights into, and approaches to, the problem of human lymphedema. The current review highlights the significant advances that have occurred in the investigative and clinical approaches to lymphedema, particularly over the last decade. This review summarizes the progress that has been attained in the realms of genetics, lymphatic imaging, and lymphatic surgery. Newer molecular insights are explored, along with their relationship to future molecular therapeutics. Growing insights into the relationships among lymphedema, obesity, and other comorbidities are important to consider in current and future responses to patients with lymphedema.

Lymphaticovenular Anastomosis in Breast Cancer Treatment-Related Lymphedema: A Short-Term Clinicopathological Analysis from Indonesia

BACKGROUND

 Locally advanced breast cancer is commonly found in Indonesia. In this group of patients, aggressive treatment such as axillary lymph nodes dissection (ALND) with or without regional nodal irradiation (RNI) will increase the risk of breast cancer treatment-related lymphedema (BCRL) in our patients. Lymphaticovenular anastomosis (LVA) has been established as a minimally invasive approach in lymphedema surgery. In this study, we report our first experience of LVAs in BCRL patients.

METHODS

 This was a cross-sectional study taken from breast cancer patients receiving ALND with or without RNI. From December 2018 until June 2020, we collected and described general patient information, tumor characteristics, diagnostic methods, and the outcome of LVA. Postoperative subjective symptoms scores (lymphedema quality-of-life score [LeQOLiS]) and lymphedematous volume (upper extremity lymphedema [UEL] index) were compared with preoperative ones.

RESULTS

 Seventy patients experienced BCRL with the mean age of 54.8 (9.4) years and mean body mass index of 28.1 (4.5). ALND was performed in 66 (97.1%) cases and RNI was given in 58 (82.9%) patients. Thirty-one (44.3%) patients were in the International Society of Lymphology stage 1, 24 (34.3%) in stage 2A, and 15 (21.4%) in stage 2B. The mean lymphatic vessel diameter was 0.5 (0.26) mm and 0.80 (0.54) mm for the vein. Lymphosclerosis severity was 7 (4%) in S0 type, 129 (74.1%) in S1 type, 37 (21.3%) in S2 type, and 1 (0.6%) in S3 type. In histopathology examination, S1 types were in lower grade injury, while S2 and S3 types were in the higher grade. Seven (53.8%) cases of S2 type showed severe fibrosis from trichrome staining. Postoperative LeQOLiSs were significantly lower than preoperative ones (5.6 ± 2.4 vs. 3.7 ± 2.6; p = 0.000). With the mean follow-up of 7.4 (3.7) months, the overall UEL index reduction was 9.2%; mean -11 (16.8). Postoperative UEL index was significantly lower than preoperative ones (117.7 ± 26.5 vs. 106.9 ± 18.5; p = 0.000). No complications were observed during this period.

CONCLUSION

 LVA reduced the subjective symptoms and UEL index in BCRL cases. Future studies using updated imaging technologies of the lymphatic system and longer follow-up time are needed to confirm our results.

The Direct Observation of Lymphaticovenular Anastomosis Patency with Photoacoustic Lymphangiography

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It is difficult to evaluate the postoperative patency of lymphaticovenular anastomosis, but this evaluation is essential for determining surgical results. When using the current standard modality, near-infrared fluorescent lymphography, it is difficult to observe patency if the anastomotic point is veiled by dermal backflow. In this study, we used a new photoacoustic imaging device, PAI-05, to check the patency of anastomosis. We performed photoacoustic lymphangiography after lymphaticovenular anastomosis surgery. By digitally subtracting the superficial area, we can examine an area deeper than the dermal backflow, which is not visible by near-infrared fluorescent lymphography. The connection between the lymphatic vessel and the venule observed in the image is an indication of the patency of anastomosis. However, in a non-patent anastomosed site, the lymphatic vessel has a gap that separates it from the venule at the anastomosed site. Although photoacoustic lymphangiography cannot be used to visualize the lymphatic vessels that are not contrasted by indocyanine green, the resulting high-resolution images and clear anastomosis evaluation afforded by it will contribute to the development of future lymphedema treatments.

Who Will Continuously Depend on Compression to Control Persistent or Progressive Breast Cancer-Related Lymphedema Despite 2 Years of Conservative Care?

BACKGROUND

When a patient with breast cancer-related lymphedema (BCRL) depends on continuous compression management, that is, when interstitial fluid accumulation is continuously ongoing, surgical treatment should be considered. Physiologic surgery is considered more effective for early-stage lymphedema. The purpose of this study was to identify predictors of patients with BCRL who will be compression-dependent despite 2 years of conservative care.

METHODS

This study included patients with BCRL who followed up for 2 years. Patients were classified into two groups (compression-dependent vs. compression-free). We identified the proportion of compression-dependent patients and predictors of compression dependence.

RESULTS

Among 208 patients, 125 (60.1%) were classified into the compression-dependent group. Compression dependence was higher in patients with direct radiotherapy to the lymph nodes (LNs), those with five or more LNs resections, and those with BCRL occurring at least 1 year after surgery.

CONCLUSIONS

BCRL patients with direct radiotherapy to the LNs, extensive LN dissection, and delayed onset may be compression-dependent despite 2 years of conservative care. Initially moderate to severe BCRL and a history of cellulitis also seem to be strongly associated with compression dependence. Our results allow for the early prediction of compression-dependent patients who should be considered for physiologic surgery.

Intraoperative Real-Time Visualization of the Lymphatic Vessels Using Microscope-Integrated Laser Tomography

BACKGROUND

 Detection and selection of the lymphatic vessels are important for maximizing therapeutic efficacy of lymphaticovenular anastomosis (LVA). Some imaging modalities have been reported to be useful for intraoperative identification of the lymphatic vessels, but they have limitations. In this article, we present new capabilities of intraoperative laser tomography, which was used to evaluate the lumen of the lymphatic vessel and to validate the patency of anastomosis.

METHODS

 Fifty-two patients with upper extremity lymphedema secondary to breast cancer treatment underwent indocyanine green (ICG) lymphography and real-time laser tomography imaging of ICG-enhanced lymphatic vessels intraoperatively before transecting the vessels during LVA. The imaging findings of the lymphatic vessels in laser tomography were investigated. Time required for scanning of the lymphatic vessels was compared between laser tomography and ultrasonography. The correlation between the thickness of the lymphatic vessel wall measured with laser tomographic imaging and the histologically measured thickness of the lymphatic vessel wall was examined. The patency of anastomosis sites was determined based on the image using laser tomography immediately after establishment of LVA.

RESULTS

 A total of 132 ICG-enhanced lymphatic vessels were scanned with laser tomography showing clear lumen with surrounding vessel wall. The required time for lymphatic vessel scanning was significantly shorter with laser tomography than with ultrasonography (1.6 ± 0.3 vs. 4.8 ± 1.2 minutes; p = 0.016). Strong correlation was seen between the thickness of the lymphatic vessels wall measured using laser tomography and the histologically measured thickness of the lymphatic vessel wall (r = 0.977, 95% confidence interval: 0.897-0.992, p < 0.001). The quality of patency was evaluated immediately after anastomosis, which assisted in deciding whether reanastomosis was needed.

CONCLUSION

 Microscope-integrated laser tomography provides real-time images of the lymphatic vessels in extremely high resolution and enables evaluation of lymphatic lumen condition and objective post-LVA anastomosis status.

Features, Predictors, and Treatment of Breast Cancer-related Lymphedema

Purpose of review

Breast cancer-related lymphedema (BCRL) is a common sequelae among breast cancer survivors. This review provides updated information on recent studies to prevent, diagnose, and actively treat women with BCRL.

Recent findings

In total, 63 articles were identified from 2015 and 2020 that assessed incidence, risk factors, surveillance, measurement and definition, treatment, and awareness of BCRL. Depending on the approach and timing of assessment, BCRL incidence rates ranged from 9.1% to 39%. Modified radical mastectomy, number of positive lymph nodes, and postoperative complications were linked to BCRL risk, in addition to chemotherapy, radiation, axillary lymph node dissection, advanced cancer stage, and higher body mass index. Early detection showed favorable BCRL outcomes (e.g., severity, symptoms). Exercise, self-management, complete decongestive therapy, bandaging, and surgery had positive effects on BCRL outcomes.

Summary

Numerous gaps exist within BCRL literature, such as the value of self-reported surveillance options to identify BCRL early, measurement strategies, and definitions of BCRL. In terms of policies, efforts are needed to educate providers, patients, payers, and legislators about the need for consensus to reduce the burden of BCRL in women being treated for breast cancer.

Outcomes following lymphaticovenous anastomosis (LVA) for 100 cases of lymphedema: results over 24-months follow-up

PURPOSE

Lymphedema is a debilitating condition that significantly affects patient's quality of life (QoL). The aim of this study was to assess the long-term outcomes after lymphaticovenous anastomosis (LVA) for extremity lymphedema.

METHODS

A single-center prospective study on upper and lower extremity lymphedema patients was performed. All LVA procedures were preceded by outpatient Indocyanine Green (ICG) lymphography. Quality of life measured by the Lymph-ICF was the primary outcome. Limb circumference, use of compression garments, and frequency of cellulitis episodes and manual lymphatic drainage (MLD) sessions were secondary outcomes.

RESULTS

One hundred consecutive patients, predominantly experiencing upper extremity lymphedema following breast cancer (n = 85), underwent a total of 132 LVAs. During a mean follow-up of 25 months, mean Lymph-ICF score significantly decreased from 43.9 preoperative to 30.6 postoperative, representing significant QoL improvement. Decrease in upper and lower limb circumference was observed in 52% of patients with a mean decrease of 6%. Overall mean circumference was not significantly different. Percentage of patients that could reduce compression garments in the upper and lower extremity group was 65% and 40%, respectively. Number of cellulitis episodes per year and MLD sessions per week showed a mean decrease of respectively 0.6 and 0.8 in the upper extremity and 0.4 and 1.0 in the lower extremity group.

CONCLUSIONS

LVA resulted in significant QoL improvement in upper and lower extremity lymphedema patients. Limb circumference did not significantly improve but good results concerning compression garments, cellulitis episodes, and MLD sessions were obtained. Additionally, a simple and patient-friendly method for outpatient ICG lymphography is presented.

Lymphaticovenular Anastomosis for Treatment of Lymphedema Developed After Liver Transplantation: A Case Report

OBJECTIVE

Secondary lymphedema of the extremities usually develops well after lymph node dissection or radiation therapy in oncologic surgery. In this report, we present a case of lymphedema developed after liver transplantation and treatment by lymphaticovenular anastomosis (LVA).

METHODS

A 52-year-old man was diagnosed with hepatocellular carcinoma in April 2016, and a liver transplantation was performed in June 2016. After the liver transplantation, left lower leg swelling developed, and the symptom became severe for around a year. Two years after liver transplantation, lymphoscintigraphy and indocyanine green lymphography were performed, and the patient was diagnosed with lymphedema caused by proximal lymphatic obstruction. LVA was performed at the ankle and superior knee areas.

RESULTS

The difference between the left and right knee circumference was decreased from 5.3 cm to 3.4 cm at 6 months postoperatively. The lower extremity lymphedema index of the left leg was decreased from 291.9 to 288.1 at 6 months after surgery. A quality of life measure for limb lymphoedema survey showed that all 4 categories (function, appearance, symptoms, and mood) were improved at 6 months after surgery.

CONCLUSION

Lymphedema can develop after liver transplantation, and early LVA surgery can be effective for the treatment of lymphedema developed after liver transplantation.