Outcomes of Lymphedema Microsurgery for Breast Cancer-related Lymphedema With or Without Microvascular Breast Reconstruction

Vascularized lymph node transfer (VLNT) versus lymphaticovenous anastomosis (LVA) for chronic breast cancer-related lymphedema (BCRL): a retrospective cohort study of effectiveness over time

PURPOSE

Microsurgical reconstruction, including vascularized lymph node transfer (VLNT) and lymphaticovenous anastomosis (LVA), have emerged as promising treatment options for chronic breast cancer-related lymphedema (BCRL). Despite their clinical relevance, the precise timelines for patient improvement following these interventions remain rather unexplored. Therefore, the goal of this study was to compare the long-term outcomes and improvement patterns over time of VLNT versus LVA to lay open potential differences and aid in personalized counseling of future patients.

METHODS

A prospectively maintained, encrypted database was analyzed for patients with chronic BCRL treated with either VLNT or LVA with a minimum follow-up of one year. Patient-specific variables, such as body weight and circumferential arm measurements at distinct locations on both arms were documented preoperatively and on regular postoperative outpatient follow-ups.

RESULTS

This study comprised 112 patients, of which 107 patients fully completed the one-year follow-up period. Both VLNT and LVA achieved significant arm size reductions. LVA showed an early peak in effectiveness within the first three months, followed by a subsequent decrease and eventual stabilization. Contrarily, VLNT exhibited a distinct pattern with two significant peaks at three and eighteen months.

CONCLUSIONS

VLNT and LVA are both effective in long-term lymphedema management, yet they demonstrate marked differences in the timing of improvement. VLNT shows a delayed but more durable response, in contrast to the greater but shorter-lasting surge in effectiveness achieved by LVA. Interestingly, VLNT demonstrates an earlier onset of therapeutic impact than previously understood.

The MD Anderson Algorithm for Lymphedema Management

This article details the MD Anderson Cancer Center algorithm for lymphedema management. We discuss prophylaxis against and treatment options for both upper extremity and lower extremity lymphedema.

Simultaneous Vascularized Lymph Node Transfer and Breast Reconstruction: A Systematic Review

Background/Objectives: Simultaneous vascularized lymph node transfer (VLNT) and breast reconstruction is a reconstructive option that potentially addresses two adverse consequences of breast cancer treatment in the same operation. This systematic review aims to analyze the quality of data and outcomes in the current literature. Methods: This systematic review was performed following PRISMA guidelines. A systematic search was conducted with Google Scholar and PubMed for studies with the simultaneous intervention of VLNT and breast reconstruction. The search terms were ((diep OR pap OR expander OR implant OR breast OR msTRAM OR TRAM) AND ("vascularized lymph node")). Studies were included if they were original articles that discussed patients who underwent simultaneous VLNT and breast reconstruction. Additional sources were identified from bibliographies. Patient characteristics, types of treatment, reconstruction, and outcome measures were collected. This review was not registered. Results: A total of 1969 unique English literature search results led to the inclusion of 118 studies. Further analysis was performed on 42 non-review articles, documenting a total of 772 patients. The mean patient age was 51.6 years, the mean BMI was 28, and there was a mean follow-up of 23.8 months. Discrete breast reconstruction data were given for 494 patients with 492 autologous reconstructions and 2 tissue expander-to-implant reconstructions. The most common reconstructive approach was a deep inferior epigastric flap. The most common VLNT donor site was the superficial inferior epigastric nodes, followed by superficial circumflex iliac nodes. Indications for 646 patients were for treatment and 18 were for prevention, while 108 were not specified. The mean excess volume reduction in treatment studies was 39.5%. A total of 168 complications (21.8%) were reported, with donor site seromas being the most common. Additionally, four partial and three total flap failures were reported. Conclusions: VLNT can be safely combined with autologous breast reconstruction for the treatment or prevention of breast cancer-related lymphedema. Future research should standardize the approach for data collection and report patient outcomes for lymphedema and immediate lymphatic reconstruction.

Disorders of Lymphatic Architecture and Flow in Critical Illness

OBJECTIVES

To provide a narrative review of disordered lymphatic dynamics and its impact on critical care relevant condition management.

DATA SOURCES

Detailed search strategy using PubMed and Ovid Medline for English language articles (2013-2023) describing congenital or acquired lymphatic abnormalities including lymphatic duct absence, injury, leak, or obstruction and their associated clinical conditions that might be managed by a critical care medicine practitioner.

STUDY SELECTION

Studies that specifically addressed abnormalities of lymphatic flow and their management were selected. The search strategy time frame was limited to the last 10 years to enhance relevance to current practice.

DATA EXTRACTION

Relevant descriptions or studies were reviewed, and abstracted data were parsed into structural or functional etiologies, congenital or acquired conditions, and their management within critical care spaces in an acute care facility.

DATA SYNTHESIS

Abnormal lymph flow may be identified stemming from congenital lymphatic anomalies including lymphatic structure absence as well as acquired obstruction or increased flow from clinical entities or acute therapy. Macro- and microsurgical as well as interventional radiological techniques may address excess, inadequate, or obstructed lymph flow. Patients with deranged lymph flow often require critical care, and those who require critical care may concomitantly demonstrate deranged lymph flow that adversely impacts care.

CONCLUSIONS

Critical care clinicians ideally demonstrate functional knowledge of conditions that are directly related to, or are accompanied by, deranged lymphatic dynamics to direct timely diagnostic and therapeutic interventions during a patient's ICU care episode.

Objectifying Clinical Outcomes After Lymphaticovenous Anastomosis and Vascularized Lymph Node Transfer in the Treatment of Extremity Lymphedema: A Systematic Review and Meta-Analysis

BACKGROUND

Upper extremity lymphedema (UEL) and lower extremity lymphedema (LEL) can develop as a result of lymph node dissection in the treatment of various malignancies. While emerging microsurgical interventions using lymphaticovenous anastomosis (LVA) and vascularized lymph node transfer (VLNT) show promising outcomes for patients with lymphedema, the best approach to implementing the two procedures remains to be defined. This systematic review and meta-analysis provide a comprehensive overview of published literature on the clinical improvement of extremity lymphedema in patients who undergo either LVA, VLNT, or a combined microsurgical procedure.

METHODS

From Embase, PubMed, and Web of Science databases, 52 studies were identified that met inclusion criteria. This review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The risk of bias was assessed using the Risk Of Bias In Nonrandomized Studies-of Interventions (ROBINS-I) tool and the Cochrane tool for randomized trials (RoB 2).

RESULTS

Random-effects meta-analyses of means estimated a pooled clinical improvement of 36.46% (95% CI: 29.44-43.48) for UEL and 34.16% (95% CI: 23.93-44.40) for LEL. Subgroup analyses revealed differences in clinical improvement according to the microsurgical approach. Clinical improvement of UEL was 29.44% (95% CI: 15.58-43.29) for LVA, 41.66% (95% CI: 34.13-49.20) for VLNT, and 32.80% (95% CI: 21.96-43.64) for combined VLNT + LVA, while the improvement of LEL was 31.87% (95% CI: 18.60-45.14) for LVA and 39.53% (95% CI: 19.37-59.69) for VLNT.

CONCLUSION

The findings from this study elucidate the clinical improvement in extremity lymphedema from various microsurgical approaches. This knowledge could aid physicians in the shared decision-making process with UEL and LEL patients and better facilitate proper patient selection for microsurgical interventions.

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.

Usefulness of Tapered Cutting Needles for Lymphaticovenular Anastomosis

Introduction: We report the usefulness of a tapered cutting needle, which has a polyhedral tip similar to that of a square needle and transitions to a round tip in the middle, for super-microsurgery. Methods: We have performed more than 500 lymphaticovenular anastomoses (LVAs) using tapered cutting needles. Therefore, we investigated the caliber of the anastomosed lymphatic vessels and veins, characteristics of the lymphatic vessels, the time required to perform the anastomosis, damage to the lymphatic vessels and veins during anastomosis, and patency of 30 recently performed consecutive anastomoses. Results: The mean caliber of the anastomosed lymphatic vessels was 0.68 mm (range, 0.4-1.2 mm), and the mean caliber of the veins was 0.87 mm (range, 0.5-1.5 mm). Regarding the progression of fibrosis, 14 cases were classified as no degeneration, 13 cases were classified as mild degeneration, 2 cases were classified as moderate degeneration, and 1 case was classified as severe degeneration. The average time required to perform the anastomosis was 10.53 minutes (range, 8-13 minutes). No cases of lymphatic or venous injury or laceration occurred during the anastomosis procedure. After the anastomosis was created, intraoperative patency was observed in all patients. Conclusion: The tapered cutting needle is useful for LVAs because of its excellent thread-ability and protective properties for blood vessels. Furthermore, the tapered cutting needle is useful for short anastomoses, regardless of the diameter or condition of the lymphatic vessels. In the future, the tapered cutting needle is expected to become the needle of choice for LVAs.

Donor-site safety in microvascular lymph node transfer for breast cancer-related lymphedema using reverse lymphatic mapping-A prospective study

BACKGROUND

Vascularized lymph node transfer (VLNT) is one option among other surgical treatments in the management of breast cancer-related lymphedema (BCRL). The cause of concern regarding VLNT harvested from the groin has been the potential development of secondary lower-extremity lymphedema. This study explored the risks associated with donor-site morbidity following groin VLNT, with or without concomitant breast reconstruction.

METHOD

The cohort comprised data from the Lymfactin® Phase I and II trials, conducted from 2016 to 2019, that used perioperative reverse lymphatic mapping. The volume of the lower extremities was measured preoperatively and at 3, 6, and 12 months postoperative, and the adverse events were documented during study visits.

RESULTS

Altogether, 51 women with a mean age of 55.5 years were recruited. The mean duration of BCRL was 31.8 months. Among these, 25 (49%) underwent VLNT (VLNT-group) and 26 (51%) underwent VLNT in combination with breast reconstruction (VLNT-BR group). The groups were similar in terms of age, (p = 0.766), BMI (p = 0.316), and duration of BCRL (p = 0.994). Across a period of one year, the volume difference between the lower extremities changed by 22.6 ml (range: -813 to 860.2 ml) (p = 0.067). None of the patients had lower-extremity volume difference exceeding 10% at the 12-month follow-up visit. The most frequent adverse events were postoperative pain (17.7%), wound healing issues (11.8%), and seroma formation (11.8%). Most adverse events (64.6%) were classified as minor.

CONCLUSIONS

This prospective study demonstrated that groin VLNT with reverse lymphatic mapping appears safe and does not increase the risk of secondary donor-site lymphedema within one year postoperatively.

Evolving Role of Lymphedema Surgery on Breast Reconstruction: A Systematic Review and Multi-Institutional Algorithmic Approach

Background/Objectives: Recent advancements in breast cancer treatment have led to increased survival rates, prompting a shift towards addressing breast cancer-related lymphedema (BCRL). Despite the evolving role of lymphatic surgery in breast reconstruction, there is limited literature evaluating the current role of lymphatic surgery in breast reconstruction. This review aims to evaluate the state of lymphatic surgery in breast reconstruction, analyzing surgical techniques and proposing a multi-institutional algorithmic approach. Methods: Through a search and screening of literature, data regarding the study type, type of operation (bypass, pLVB/ILR/LYMPHA, VLNT, or a combination of treatments), and clinical outcomes were collected. Results: The systematic review included 184 studies. Overall, the number of publications on lymphatic surgery increased from 4.4 per year (2010-2016) to 21.1 per year since 2017. The most published procedure was vascularized lymph node transfer (34.6%), followed by preventive lymphatic surgery (31.4%), therapeutic lymphovenous bypass (23.3%), and combined breast and lymphatic reconstruction (10.7%). While VLNT was the most published procedure, preventive surgery has been the most published topic since 2020, with 11.7 articles per year since. Similarly, there has been an increase in studies on combined lymphatic surgery and breast reconstruction in the last five years, with 16 articles published. Conclusions: The role of lymphatic surgery in breast cancer patients is evolving, with an increasing emphasis on preventive procedures and combined reconstructive approaches. However, our study shows that the current literature is predominantly based on lower-level evidence, highlighting the need for more randomized controlled trials to establish stronger clinical recommendations.

Super-Microsurgery for Vessels with Diameters Smaller Than 0.5 mm

Introduction: Among super-microsurgical techniques, the anastomosis of vessels smaller than 0.5 mm is very difficult to perform due to the small diameter and thinness of the blood and lymphatic vessel walls. In this article, we report on the main points of super microsurgery, particularly on the anastomosis of veins and lymphatic vessels with diameters smaller than 0.5 mm. Methods and Results: Details of anastomosis of vessels smaller than 0.5 mm. (1) The outer wall of the first blood vessel near the abrupt end hook with the tip of the needle in the needle holder. The entire abrupt end of the first blood vessel was supported by forceps in the surgeon's left-hand. (2) The surgeon decided the entry point and angle of the needle while moving the tip. After the needle was fixed, a force was applied so that the needle could pass through to the vascular wall. (3) After the needle passed through, the tip was confirmed to be located in the lumen of the first blood vessel. (4) The tip of the needle was inserted into the lumen of the second blood vessel, and the bite was adjusted while touching the second blood vessel through the endometrium. (5) Once the tip was properly positioned, counter-traction was applied by holding the entire outer wall with a left-hand forceps. (6) The needle was held near the tip and pulled out along its curvature. The anastomosis time was 11.35 minutes on average (9 to 14 minutes). The patency rate for all 20 anastomosis procedures was also 100%. Conclusion: The important points of LVA for lymphatic vessels and veins smaller than 0.5 mm were reported. Once the surgeons are familiarized with this anastomosis procedure, they can typically perform one anastomosis in about 10 minutes.

Comparing Different Donor Sites After Vascularized Lymph Node Transfer to the Lymphedematous Upper Limb: A Systematic Review and Meta-analysis of Clinical Outcomes

BACKGROUND

Vascularized lymph node transfer (VLNT) involves the microvascular transplantation of functional lymph nodes from a donor site into a limb affected by lymphedema to restore the normal flow of lymphatic fluid. Despite the increasing clinical experience with VLNT, there remains insufficient data to support its routine use in clinical practice. Here, we aim to evaluate the effectiveness and safety of VLNTs for upper limb lymphedema and compare clinical outcomes when using different donor sites.

METHODS

We carried out a systematic search of the literature through PubMed and Scopus databases for studies on VLNT for upper limb lymphedema. Primary and secondary outcomes included circumference reduction rate (CRR) and infection reduction rate by postoperative cellulitis episodes for the efficacy and safety of VLNT. Pooled analysis was performed using the inverse variance weighting meta-analysis of single means using the meta package in R software. Subgroup analyses were performed for donor and recipient sites, age groups, follow-ups, and symptom durations. Quality assessment was performed using the Newcastle-Ottawa Scale for nonrandomized studies.

RESULTS

A total of 1089 studies were retrieved from the literature, and 15 studies with 448 upper limb lymphedema patients who underwent VLNT were included after eligibility assessment. The mean CRR was 34.6 (18.8) and the mean postoperative cellulitis episodes per year was 0.71 (0.7). The pooled analysis of CRR was 28.4% (95% confidence interval, 19.7-41.1) and postoperative cellulitis episodes showed a mean of 0.59 (95% confidence interval, 0.36-0.95) using the random-effect model. Subgroup analyses showed significant group differences in recipient site for CRR and postoperative cellulitis episodes with the wrist comprising the highest weights, and patients younger than 50 years showing a lower postoperative infection.

CONCLUSIONS

Vascularized lymph node transfer using gastroepiploic flaps at the wrists has shown a significant difference in reductions of limb circumference and cellulitis episodes in upper limb lymphedema patients when compared with other donor sites. However, further prospective studies are needed to consolidate this finding.

Breast Cancer-related Lymphedema: Recent Updates on Clinical Efficacy of Therapies and Bioengineering Approaches for a Personalized Therapy

BACKGROUND

Post-mastectomy lymphedema is a chronic progressive disease characterized by a significant reduction in quality of life and a range of complications.

AIM

To this date, no single treatment method provides pathological correction of the mechanisms associated with tissue reorganization observed in later-stage breast cancer-related lymphedema (BCRL).

METHODS

To define a personalized approach to the management of patients with iatrogenic lymphedema, we performed a systematic review of literature without a comprehensive meta-analysis to outline existing molecular- genetic patterns, overview current treatment methods and their efficacy, and highlight the specific tissue-associated changes in BCRL conditions and other bio-engineering approaches to develop personalized therapy.

RESULTS

Our results show that several tissue-specific and pathological molecular markers may be found, yet current research does not aim to define them.

CONCLUSION

As such, currently, a strong foundation for further research into molecular-genetic changes in lymphedema tissue exists, and further research should focus on finding specific targets for personalized treatment through bio-engineering approaches.

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.

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.

Current trends in postmastectomy breast reconstruction

PURPOSE OF REVIEW

Breast reconstruction is established as integral part of the treatment. New materials, indications and surgical techniques are subject to rapid modification to further improve safety, quality and longevity.

RECENT FINDINGS

Skin-sparing-mastectomy is accepted as an appropriate alternative in risk-reducing and many breast cancer patients, further reducing conventional mastectomy patterns.Radiation in combination with reconstruction is still challenging with no clear advances reducing skin-toxicity.Autologous reconstructions, not only in radiation settings, are turning to a first line approach. A trend driven by improved techniques to minimize morbidity and flap-variations.Breast implant surfaces associated with a high risk of Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) are now withdrawn. The residual risk for the remaining implant styles is not known, but can be expected considerably lower than estimations published presently.In order to reduce local complications, supplemental material often in combination with prepectoral implant placement is advertised. The present evidence on long-term outcome is limited.Super-microsurgery treating lymphedema is evolving rapidly. Refinements of various techniques and their differential indication are under evaluation to standardize the procedures.

SUMMARY

Breast reconstruction evolved to a complex, specialized field with a multitude of options. A multidisciplinary team is required to fully utilize todays potential and offer optimal individual treatments.

Super-microsurgery technique for lymphaticovenular anastomosis

BACKGROUND

In super-microsurgery, such as lymphaticovenular anastomosis (LVA), the diameter of the target vessel can be small and difficult to manage, and the basic surgical technique of microsurgery, such as inserting a forceps into the lumen and applying countertraction, can be difficult. In addition, it can be difficult to confirm the success or failure of the postoperative anastomosis, unlike with normal free-flap transfer, or to learn the technique by reviewing the results.

METHODS

We have described a safe, quick, and accurate technique for LVA based on our experience performing several hundred such cases at our institution.

RESULTS

Before LVA, the location of the significant lymphatic vessels and veins proximal to the lymphatic vessels should be marked using indocyanine green fluorescence angiography and a vein viewer to help determine the skin incision site. We used super-microsurgical titanium needles and surgical scissors and an end-to-end anastomosis. The lymphatic vessels should be dissected as far as possible from the skin incision to the center, and the veins should be dissected as far as possible from the periphery. First, a stay suture should be applied to the upper and lower ends of the anastomosis at 180°. Next, the anterior wall should be sutured. In some cases, countertraction can be applied by inserting the tip of a forceps into the vascular vessel. However, because its insertion could damage the lymphatic vessel wall, it would be more appropriate to perform the anastomosis using the involved stitch technique. After anastomosis of the anterior wall, the vessel should be inverted and the posterior wall anastomosed using the same technique.

CONCLUSIONS

We have reported the key points necessary to perform LVA quickly and accurately and the precautions necessary to maintain long-term patency. This sophisticated LVA technique can be applied to improve the outcomes for patients with lymphedema.

A Prospective Study on the Safety and Efficacy of Vascularized Lymph Node Transplant

PURPOSE

While vascularized lymph node transplant (VLNT) has gained popularity, there are a lack of prospective long-term studies and standardized outcomes. The purpose of this study was to evaluate the safety and efficacy of VLNT using all available outcome measures.

METHODS

This was a prospective study on all consecutive patients who underwent VLNT. Outcomes were assessed with 2 patient-reported outcome metrics, limb volume, bioimpedance, need for compression, and incidence of cellulitis.

RESULTS

There were 89 patients with the following donor sites: omentum (73%), axilla (13%), supraclavicular (7%), groin (3.5%). The mean follow-up was 23.7±12 months. There was a significant improvement at 2 years postoperatively across all outcome measures: 28.4% improvement in the Lymphedema Life Impact Scale, 20% average reduction in limb volume, 27.5% improvement in bioimpedance score, 93% reduction in cellulitis, and 34% of patients no longer required compression. Complications were transient and low without any donor site lymphedema.

CONCLUSIONS

VLNT is a safe and effective treatment for lymphedema with significant benefits fully manifesting at 2 years postoperatively. Omentum does not have any donor site lymphedema risk making it an attractive first choice.

Outcomes for Physiologic Microsurgical Treatment of Secondary Lymphedema Involving the Extremity

OBJECTIVE

The aim of this study was to examine the long-term impact of physiologic surgical options, including VLNT and LVB, on patients with secondary lymphedema of the upper or lower extremity (UEL/LEL).

SUMMARY BACKGROUND DATA

VLNT and LVB have become increasingly popular in the treatment of lymphedema. However, there is a paucity of long-term data on patient outcomes after use of these techniques to treat lymphedema.

METHODS

An analysis of prospectively collected data on all patients who underwent physiologic surgical treatment of secondary lymphedema over a 5.5-year period was performed. Patient demographics, surgical details, subjective reported improvements, LLIS scores, and postoperative limb volume calculations were analyzed.

RESULTS

Two hundred seventy-four patients with secondary lymphedema (197 upper, 77 lower) were included in the study. More than 87% of UEL patients and 60% of LEL patients had reduction in excess limb volume postoperatively. At 3 months postoperatively, patients with UEL had a 31.1% reduction in volume difference between limbs, 33.9% at 6 months, 25.7% at 12 months, 47.4% at 24 months and 47.7% at 4 years. The reduction in limb volume difference followed a similar pattern but was overall lower for LEL patients. Greater than 86% of UEL and 75% of LEL patients also had improvement in LLIS scores postoperatively. Fifty-nine complications occurred (12.9%); flap survival was >99%.

CONCLUSIONS

Patients with secondary UEL/LEL who undergo VLNT/LVB demonstrate improved functional status and reduced affected limb volumes postoperatively. Patients with UEL seem to have a more substantial reduction in limb volume differential compared to LEL patients.

[Autologous Breast Reconstruction in Conjuction with Lymphatic Microsurgery in Breast Cancer-Related Lymphedema]

Breast cancer-related lymphedema of the upper extremity is the most significant non-oncological complication of tumour therapy, leading to functional impairment and impacting patients' quality of life. Autologous breast reconstruction per se effectively reduces incidence and stage of lymphedema after breast cancer treatment by surgical angiogenesis. In addition, modern surgical techniques for treating lymphedema are effective in reducing limb volume, circumference and functional impairment, and improving patients' quality of life, body image, integrity and local immunocompetence. Reconstructive surgery, including lymphovenous anastomoses (LVA) and vascularised lymph node transfer (VLNT), have been shown to rearrange or restore lymphatic flow and prevent stage progression. For patients with breast cancer-related lymphedema after mastectomy, autologous breast reconstruction in conjunction with lymphatic microsurgery using VLNT, LVA or a combination of these procedures offers the option of holistic and single-stage restoration in modern senology. Extensive scar release in the axilla is a crucial component of the surgical technique, aiming to prepare the recipient bed for the VLN transplant and to allow for the functional recruitment of remaining lymph vessels of the upper extremity. This article presents the indications, preoperative diagnostic evaluation, surgical techniques and precautions, complications and results of combined lymphatic and breast restoration.

Physical and Functional Outcomes of Simultaneous Vascularized Lymph Node Transplant and Lymphovenous Bypass in the Treatment of Lymphedema

BACKGROUND

The authors analyze the outcomes of simultaneous vascularized lymph node transplant and lymphovenous bypass for treatment of primary and secondary lymphedema. To the best of their knowledge, this is the largest study to date with long-term outcome data of this novel approach.

METHODS

Three hundred twenty-eight patients who underwent physiologic surgical treatment over a 5.5-year period were evaluated using a prospective database and chart review. Preoperative characteristics, operative details, and postoperative outcomes (volume difference change, Lymphedema Life Impact Scale score) were assessed. Statistical analysis including multivariate regression was performed.

RESULTS

Two hundred twenty patients (67.1 percent) underwent simultaneous vascularized lymph node transplant and lymphovenous bypass. Mean body mass index was 26.9 ± 4.7 kg/m 2 . Ninety-two patients (41.8 percent) had lymphedema of the lower extremity, 121 (55.0 percent) had upper extremity involvement, and seven had lymphedema of upper and lower extremities (3.2 percent). Average duration of lymphedema was 95.4 ± 103.6 months. Thirty patients (13.6 percent) had primary lymphedema and 190 patients (86.4 percent) had secondary lymphedema. The majority improved and experienced volume reduction of an average 21.4 percent at 1 year ( p < 0.0001), 36.2 percent at 2 years ( p < 0.0001), 25.5 percent at 3 years ( p = 0.1), and 19.6 percent at 4 years. Median Lymphedema Life Impact Scale scores were 7.0 points lower ( p < 0.0001) at 3 months and improved progressively over time to 27.5 points lower at 3 years postoperatively ( p < 0.005).

CONCLUSIONS

Simultaneous vascularized lymph node transplant and lymphovenous bypass is an appropriate and effective approach for both early and advanced stages of primary and secondary lymphedema, with significant objective and subjective improvements. Volume reduction in the affected limb was observed at all time points postoperatively, with significant improvement in Lymphedema Life Impact Scale scores.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

New Robotic System with Wristed Microinstruments Allows Precise Reconstructive Microsurgery: Preclinical Study

BACKGROUND

Microsurgery allows complex reconstruction of tissue defects after oncological resections or severe trauma. Performing these procedures may be limited by human tremor, precision, and manual dexterity. A new robot designed specifically for microsurgery with wristed microinstruments and motion scaling may reduce human tremor and thus enhance precision. This randomized controlled preclinical trial investigated whether this new robotic system can successfully perform microsurgical needle driving, suturing, and anastomosis.

METHODS

Expert microsurgeons and novices completed six needle passage exercises and performed six anastomoses by hand and six with the new robot. Experienced microsurgeons blindly assessed the quality of the procedures. Precision in microneedle driving and stitch placement was assessed by calculating suturing distances and angulation. Performance of microsurgical anastomoses was assessed by time, learning curves, and the Anastomosis Lapse Index score for objective performance assessment.

RESULTS

Refined precision in suturing was achieved with the robot when compared with the manual technique regarding suture distances (p = 0.02) and angulation (p < 0.01). The time required to perform microsurgical anastomoses was longer with the robot, however, both expert and novice microsurgeons reduced times with practice. The objective evaluation of the anastomoses performed by novices showed better results with the robot.

CONCLUSIONS

This study demonstrated the feasibility of performing precise microsutures and anastomoses using a new robotic system. Compared to standard manual techniques, robotic procedures were longer in time, but showed greater precision.

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.

[Rehabilitation in lymphedema surgery]

Conservative treatment of lymphedema usually includes complex decongestive therapy in order to reduce the volume of the lymphedema, and compression garments in the maintenance phase. Follow-up is carried out in the Rehabilitation Services. Surgical treatment of lymphedema is a therapeutic option, the interest of which has increased in recent years, although there is no current evidence that it can cure lymphedema and it is always accompanied by conservative treatment. Most studies focus on results according to the type of surgery and there is no standardized protocol for conservative treatment before or after surgery. The objective of this work is to prepare a compendium about the most frequent lymphedema surgeries and their indications, focusing on the rehabilitation treatment for each surgery.

A Systematic Stepwise Method to Perform a Supermicrosurgical Lymphovenous Anastomosis

BACKGROUND

Lymphovenous anastomosis (LVA) has become an increasingly common treatment for patients with extremity lymphedema. In this article, we present our current strategy for patient selection, preoperative planning, and a series of intraoperative clues that may help to perform a supermicrosurgical LVA. Technical considerations are presented using a systematic step-by-step method to make this procedure more reproducible and straightforward.

PATIENTS AND METHODS

We conducted a review of patients operated between January 2015 and June 2018 using the aforementioned approach. Data were collected prospectively, and all procedures were performed by the senior author. Preoperative assessment included lymphoscintigraphy, indocyanine green lymphography, noncontrast magnetic resonance lymphography and high-frequency ultrasonography. Lymphovenous anastomosis was decomposed into a sequential 6-step approach considering the main aspects that determine a successful anastomosis.

RESULTS

Lymphovenous anastomosis was performed in 229 patients, including 677 anastomoses. Median follow-up was 33 months (range, 13-51 months). A median of 3.1 (range, 1-7) LVA were performed on 2.7 (range, 1-6) incision sites per patient. Median time for dissection of lymphatic(s) and vein(s) was 8.7 minutes (1-18 minutes) with a median time of 27.2 minutes (range, 13-51 minutes) for a complete LVA. Lymphatic detection rate was 100% (677 of 677) and vein detection rate was 99.7% (675 of 677), with 31.0% (210 of 677) of reflux-free veins. For upper-extremity lymphedema (47 of 229; 20.6%), volume reduction was achieved in 100% (47 of 47) of the cases, with a median volume reduction rate of 67% (range, 7-93%). In lower-extremity lymphedema (182 of 229; 79.4%), volume reduction was achieved in 86.8% (158 of 182) of the cases, with a median volume reduction rate of 41% (range, 7-81%). Cellulitis episodes decreased from 2.1 to 0.2 episodes/year after LVA (P < 0.05).

CONCLUSIONS

Acceptable success rates were obtained using a sequential strategy for planning and execution of supermicrosurgical LVA for secondary extremity lymphedema. We believe including a stepwise approach may help to simplify this procedure, especially for surgeons in their early practice.

Optimizing Treatment of Breast Cancer Related Lymphedema Using Combined DIEP Flap and Lymphedema Surgery

Patients undergoing treatment for breast cancer who undergo an axillary dissection and require adjuvant therapies such as radiation and chemotherapy are at high risk of developing lymphedema of the associated extremity. Historically, patients with lymphedema were treated with ablative procedures aimed simply to remove excess fluid and adiposity; however, the field of lymphatic surgery employing super-microsurgery techniques has witnessed tremendous advances in a relatively short period of time. Advancements in surgical instruments, microscope magnification and optics, imaging technology, and surgeon experience have ushered in a new era of hope to treat patients suffering from breast cancer–related lymphedema (BCRL). Here we aim to present the available options for patients suffering from BCRL, and the pinnacle in reconstruction and restoration for these patients.

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.

Outcomes and technical modifications of vascularized lymph node transplantation from the lateral thoracic region for treatment of lymphedema

BACKGROUND AND OBJECTIVES

This study evaluates clinical outcomes of vascularized lymph node transplantation (VLNT) from the lateral thoracic region and technical modifications.

METHODS

Consecutive patients that underwent lateral thoracic VLNT to treat extremity lymphedema were included. Demographic and treatment data were recorded, and outcomes data including limb volume, LDex score, and Lymphedema Life Impact Scale (LLIS), QuickDASH, and LEFS questionnaires, were collected prospectively. Consecutive patients that underwent single-photon emission computed tomography (SPECT/CT) lymphoscintigraphy axillary reverse lymphatic mapping (RLM) were analyzed to characterize the physiological drainage of the normal upper extremity.

RESULTS

A consecutive series of 32 flaps were included. At 24 months postoperatively mean reduction in limb volume excess was 47.2% (±11.6; p = 0.0085), LDex score was 63.1% (±8.5; p < 0.001), and LLIS score was 65.1% (±7.4; p < 0.001). Preoperatively 14/31 patients (45.2%) reported cellulitis, and postoperatively there were no episodes at up to 24 months (p < 0.001). No patient developed donor extremity lymphedema at mean 18.6 (±8.3) months follow-up. SPECT/CT-RLM of 182 normal axillae demonstrated that the sentinel lymph node(s) of the upper extremity was consistently anatomically located in the upper outer quadrant of the axilla (97%).

CONCLUSIONS

VLNT from the lateral thoracic region is effective and versatile for the treatment of lymphedema with a low donor site complication rate.

Vascularized Lymph Node Transfer for the Treatment of Posttraumatic Lower Extremity Lymphedema: A Preliminary Report

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 cm ² . 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.

Breaking the technical barrier of microvascular anastomosis with high-speed videography: A prospective cohort study

BACKGROUND

Microsurgical anastomosis is technically difficult especially for less-experienced surgeons. Traditionally, surgeons in training could only accomplish these surgeries under intensive guiding and supervision from senior surgeons. This study presents and characterises a new method for microsurgical trainees to objectively evaluating the quality of vascular anastomosis intraoperatively.

MATERIALS AND METHODS

We conducted a prospective study to determine the utility of patency test of vascular anastomosis with assistance of high-speed video recording (PTHVR) to evaluate the quality of vascular anastomosis during microsurgery. To determine whether the use of PTHVR outperformed traditional supervision from senior surgeons (historical control), we compared the outcomes of microsurgeries including free flap transfer and replantation between the two groups.

RESULTS

A total of 211 patients were enrolled, of which 98 underwent surgery under traditional supervision and 113 underwent surgery with PTHVR. Of the 211 patients, 102 underwent digit replantation (48%), 22 underwent limb replantation (10%), and 87 underwent free flap transfer (42%). There was no statistical difference between the two groups in age, gender, BMI, pre-existing comorbidities, smoking status, alcohol consumption, and duration of surgery. Use of PTHVR as an intraoperative guide significantly decreased the rate of re-exploration surgeries (PTHVR, 8.0% [9/113]; control, 23.5% [23/98]; P = 0.002) and replantation/free flap failures (PTHVR, 8.8% [10/113]; control, 19.4% [19/98]; P = 0.029) compared with historical control under traditional supervision.

CONCLUSIONS

PTHVR is a useful tool for improving the success rate of microsurgery for less-experienced surgeons when compared with traditional supervision mode.

Axilla versus Wrist as the Recipient Site in Vascularized Lymph Node Transfer for Breast Cancer-Related Lymphedema: A Systematic Review and Meta-Analysis

BACKGROUND

 Vascularized lymph node transfers (VLNT) are being used with increasing frequency for the treatment of breast cancer-related lymphedema (BCRL). However, there is a lack of consensus in the surgical field as to which recipient site should be utilized. We, therefore, aim to assess the evidence comparing the wrist and axilla as recipient sites for VLNT in BCRL.

METHODS

 We conducted a systematic literature review to compare the wrist and axilla as recipient sites for VLNT in BCRL. Demographic data, as well as circumference reduction rate (CRR), excess volume reduction (EVR), postoperative decrease in infections per year, postoperative discontinuation of compression garments, and overall pooled complication rate were extracted from included studies. These were compared through a meta-analysis.

RESULTS

 A total of 37 studies met the inclusion criteria for a total of 689 patients. VLNTs to the wrist and axilla resulted in a decrease in CRR of 42.1 and 51.5%, and a decrease in EVR of 35.6 and 48.8%, respectively. However, our meta-analysis showed no significant differences between CRR or EVR and between wrist and axilla as recipient sites. Similarly, we found no differences in postoperative decrease in infections per year, postoperative discontinuation of compression garments, and overall pooled complication rate.

CONCLUSION

 These data suggest noninferiority between the wrist and axilla as recipient sites for VLNT in the context of BCRL. In the absence of randomized, prospective data, we hope these results can be used as an evidence-based reference and facilitate future studies.

Relationship Between Lymphaticovenular Anastomosis Outcomes and The Number and Types of Anastomoses

BACKGROUND

Lymphaticovenular anastomosis (LVA) is the first-line treatment for lymphedema in many hospitals. However, many aspects of its effects remain unclear. This study aimed to analyze problems with regard to the relationship between lymphaticovenular anastomosis and outcomes of surgery for lymphedema in the upper and lower extremities.

METHODS

Eighteen articles were selected for review. The following information was extracted from these articles as factors associated with LVA for lymphedema in the upper and lower extremities: number of cases, average patient age, mean number of bypasses, lymphedema stage, duration and type of lymphedema, anastomotic technique, follow-up period, type of scale, and treatment outcomes.

RESULTS

Upper extremity lymphedema: The average age of patients was 54.2 (range: 41.3-60.1) years. The mean number of anastomoses was 3.91 (range: 1.0-7.2). Six of nine articles provided data for volume change, and the mean volume change was 29% (-5%-50%). Lower extremity lymphedema: The average age of patients was 50.3 (range: 34-64 years). The mean number of anastomoses was 4.6 (range: 2.1-9.3). Comparison was difficult as different methods were used for postoperative evaluation (lower extremity lymphedema index in three patients, limb circumference in one, volume change in two, and restaging in three).

CONCLUSIONS

We obtained useful information with regard to the effects of LVA in this review. An increased number of anastomoses between the lymphatic ducts and veins did not seem to improve the effectiveness of LVA. With regard to the stage of lymphedema, LVA may be useful for both early and advanced stages.

Surgical Treatment of Lymphedema: A Systematic Review and Meta-Analysis of Controlled Trials. Results of a Consensus Conference

BACKGROUND

The goal of this consensus conference, sponsored by the American Association of Plastic Surgeons, was to perform a systematic review and meta-analysis of controlled trials to examine both the benefits and risks of surgical treatment and surgical prevention of upper and lower extremity lymphedema.

METHODS

The panel met in Boston for a 3-day, face-to-face meeting in July of 2017. After an exhaustive review of the existing literature, the authors created consensus recommendations using the Grading of Recommendations, Assessment, Development and Evaluation criteria. Important directions for future research were also identified.

RESULTS

There is evidence to support that lymphovenous anastomosis can be effective in reducing severity of lymphedema (grade 1C). There is evidence to support that vascular lymph node transplantation can be effective in reducing severity of lymphedema (grade 1B). Currently, there is no consensus on which procedure (lymphovenous bypass versus vascular lymph node transplantation) is more effective (grade 2C). A few studies show that prophylactic lymphovenous bypass in patients undergoing extremity lymphadenectomy may reduce the incidence of lymphedema (grade 1B). More studies with longer follow-up are required to confirm this benefit. Debulking procedures such as liposuction are effective in addressing a nonfluid component such as fat involving lymphedema (grade 1C). There is a role for liposuction combined with physiologic procedures although the timing of each procedure is currently unresolved (grade 1C).

CONCLUSIONS

Many studies seem to support some efficacy of lymphovenous bypass and vascular lymph node transplantation. Many studies show the important role of lymphedema therapy and other procedures such as liposuction and debulking. The management of lymphedema is a challenging field with many promising advances. However, many questions remain unanswered.

A Systematic Review and Meta-Analysis of Vascularised Lymph Node Transfer for Breast Cancer Related Lymphedema

INTRODUCTION

Vascularized lymph node transfer (VLNT) is an increasingly popular technique for treating lymphedema. However, while many studies have been performed, its efficacy to increase patients' quality of life and reduce lymphedema in the affected body part are still controversial. In this systematic review we summarize the evidence on VLNT for treating breast cancer related lymphedema (BCRL).

MATERIAL AND METHODS

MEDLINE, EMBASE and Cochrane CENTRAL were searched for studies including patients with BCRL who received VLNT. Methodology was assessed by the MINORS tool. Primary outcomes were change in volume difference between arms and quality of life. Secondary outcomes were skin infections, complications and discontinuation of compression garment use.

RESULTS

17 Studies were included for qualitative synthesis and eight studies for meta-analysis. The average reduction rate between the healthy and affected arm for studies included in the meta-analysis was 40.31%. Five studies evaluated QoL and in all of these studies QoL was significantly increased. Eight studies evaluated skin infections of which three provided yearly infection rates before and after surgery. In these studies infection rate was significantly decreased. Three studies described usage of compression garment. When patients are pooled 27 out of 60 were able to discontinue compression garment. Donor and recipient complication rates were 12.1 and 7.3% respectively.

CONCLUSIONS

Current evidence indicates that VLNT can improve volume difference between arms in unilateral lymphedema patients by about 40%. In addition, although based on few studies, it is likely that VLNT has a positive effect on patients QoL, the number of skin infections and compression garment usage while coinciding with a low complication rate.

Retrograde Manual Lymphatic Drainage following Vascularized Lymph Node Transfer to Distal Recipient Sites for Extremity Lymphedema: A Retrospective Study and Literature Review

BACKGROUND

Vascularized lymph node transfer is an efficacious treatment for extremity lymphedema. This study investigated the outcome of retrograde manual lymphatic drainage for vascularized lymph node transfer to distal recipient sites.

METHODS

Lymphedema patients who underwent either complete decongestive therapy or vascularized lymph node transfer between 2013 and 2018 were retrospectively included. Retrograde manual lymphatic drainage was started with intermittent manual compression and the assistance of a sphygmomanometer and proximal-to-distal massage of the limb 1 month postoperatively. Outcomes evaluations used the circumferential reduction rate and the Lymphedema-Specific Quality-of-Life Questionnaire. Outcomes of vascularized lymph node transfer to proximal versus distal recipient sites in the literature between 2006 and 2018 were also compared.

RESULTS

One hundred thirty-eight unilateral extremity lymphedema patients, including 68 patients in the complete decongestive therapy group and 70 patients in the vascularized lymph node transfer group, were included. The mean circumferential reduction rate of 38.9 ± 2.5 percent in the vascularized lymph node transfer group was statistically greater than the 13.2 ± 10.1 percent rate in the complete decongestive therapy group (p = 0.01). At a mean follow-up of 36 months, the improvement of overall Lymphedema-Specific Quality-of-Life Questionnaire score from 3.8 ± 0.3 to 7.5 ± 1.8 in the vascularized lymph node transfer group was statistically greater than that in the complete decongestive therapy group (from 4.7 ± 0.9 to 5.0 ± 1.9; p < 0.01). In total, 536 lymphedema patients who underwent 548 vascularized lymph node transfers in 23 published articles were reviewed; the distal recipient-site group was found to have more efficacious results than the proximal recipient-site group.

CONCLUSION

Vascularized lymph node transfer to a distal recipient site with standard retrograde manual lymphatic drainage significantly improved circumferential reduction rates and Lymphedema-Specific Quality-of-Life Questionnaire scores.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

Operative Therapiemöglichkeiten in der Lymphologie

Das Lymphgefäßsystem ist essenziell für den Rücktransport interstitieller Flüssigkeit aus dem Gewebe zurück in den Blutkreislauf. Bei Störungen des komplexen Netzwerkes kommt es zur Ausbildung von Ödemen und der Ansammlung und Ablagerung von Proteinen und Lipiden in der betroffenen Region. Obwohl das Lymphsystem schon seit Jahrhunderten Gegenstand der Forschung ist, haben lymphologische Krankheitsbilder wie das Lymphödem als mögliche Folge onkologischer Therapien erst in den vergangenen Jahren an Aufmerksamkeit gewonnen. So liegt die Inzidenz des sekundären Lymphödems, das durch traumatische, infektiöse oder iatrogene Schädigung auftritt, zwischen 0,13 und 2 % und betrifft meist Frauen. Auch das davon abzugrenzende Lipödem ist in den letzten Jahren zunehmend in den Fokus der Öffentlichkeit gerückt. Beide Erkrankungen können mit einer schmerzhaften Umfangsvermehrung, einer beruflichen und alltäglichen Einschränkung und einer Reduktion der Lebensqualität einhergehen. Neben der klinischen Untersuchung und Anamnese gewinnen neue bildgebende Verfahren eine zunehmende Bedeutung zur Verbesserung der Diagnosestellung, Stadieneinteilung und Therapieplanung, wenngleich immer noch oftmals Monate bis Jahre bis zur korrekten Diagnosestellung vergehen. Während konservative Therapiemethoden wie die komplexe physikalische Entstauungstherapie weiterhin die Grundlage der Behandlung bilden, kommen zunehmend auch operative Verfahren bei der Therapie des Lymphödems zum Einsatz. Hierbei unterscheidet man die reduzierenden Verfahren, die hauptsächlich auf die Symptomreduktion abzielen, von den rekonstruktiven Verfahren zur Wiederherstellung des Lymphsystems mittels mikrochirurgischer Techniken. Nachfolgend werden verschiedene operative Therapiemöglichkeiten in der Lymphologie dargestellt.

A meta-analysis of the efficacy of vascularised lymph node transfer in reducing limb volume and cellulitis episodes in patients with cancer treatment-related lymphoedema

BACKGROUND

Lymphoedema after cancer treatment is a chronic and disabling complication that presents a significant health care burden during survivorship with limited treatment options. Vascularised lymph node transfer (VLNT) can reconstruct lymphatic flow to reduce limb volumes, but limited higher-order evidence exists to support its effectiveness.

AIM

The aim of the study was to systematically review and meta-analyse the effectiveness of VLNT in reducing upper limb (UL) or lower limb (LL) volume and cellulitis episodes in patients with cancer treatment-related lymphoedema (CTRL).

METHODS

PubMed, Medline (Ovid) and Embase databases were searched between January 1974 and December 2019. Full-length articles where VLNT was the sole therapeutic procedure for CTRL, reporting volumetric limb, frequency of infection episodes and/or lymphoedema-specific quality-of-life data, were included in a random-effects meta-analysis of circumferential reduction rate (CRR). Methodological quality was assessed using STROBE/CONSORT, and a novel, lymphoedema-specific scoring tool was used to assess lymphoedema-specific methodological reporting. Sensitivity analyses on the site of VLNT harvest and recipient location were performed.

RESULTS

Thirty-one studies (581 patients) were eligible for inclusion. VLNT led to significant limb volume reductions in UL (above elbow pooled CRRs [CRR_P] = 42.7% [95% confidence interval (CI): 36.5-48.8]; below elbow CRR_P = 34.1% [95% CI: 33.0-35.1]) and LL (above knee CRR_P = 46.8% [95% CI: 43.2-50.4]; below knee CRR_P = 54.6% [95% CI: 39.0-70.2]) CTRL. VLNT flaps from extra-abdominal donor sites were associated with greater volume reductions (CRR_P = 49.5% [95% CI: 46.5-52.5]) than those from intra-abdominal donor sites (CRR_P = 39.6% [95% CI: 37.2-42.0]) and synchronous autologous breast reconstruction/VLNT flaps (CRR_P = 32.7% [95% CI: 11.1-54.4]) (p < 0.05). VLNT was also found to reduce the mean number of cellulitis episodes by 2.1 episodes per year (95% CI: -2.7- -1.4) and increased lymphoedema-specific quality-of-life scores (mean difference in Lymphoedema-Specific Quality of Life (LYMQOL) "overall domain" = +4.26).

CONCLUSIONS

VLNT is effective in reducing excess limb volume and cellulitis episodes in both UL and LL lymphoedema after cancer treatment. However, significant heterogeneity exists in outcome reporting, and standardisation of reporting processes is recommended.

Breast Cancer-Related Lymphedema: Recent Updates on Diagnosis, Severity and Available Treatments

Breast cancer-related lymphedema (BCRL) represents a global healthcare issue affecting the emotional and life quality of breast cancer survivors significantly. The clinical presentation is characterized by swelling of the affected upper limb, that may be accompanied by atrophic skin findings, pain and recurrent cellulitis. Cardinal principles of lymphedema management are the use of complex decongestive therapy and patient education. Recently, new microsurgery procedures have been reported with interesting results, bringing in a new opportunity to care postmastectomy lymphedema. However, many aspects of the disease are still debated in the medical community, including clinical examination, imaging techniques, patient selection and proper treatment. Here we will review these aspects and the current literature.

Latest Advancements in Autologous Breast Reconstruction

LEARNING OBJECTIVES

After studying this article, the participant should be able to: 1. Understand the available donor sites for autologous breast reconstruction. 2. Describe the advantages and limitations of each donor site. 3. Provide a rational, algorithmic preoperative evaluation and approach for patients seeking autologous breast reconstruction. 4. Develop an effective postoperative monitoring system to minimize complications and maximize salvage of microvascular thromboses.

SUMMARY

Breast reconstruction remains at the heart of the field of plastic and reconstructive surgery, and it is continuously evolving. Tremendous advances in breast implant technology and supplemental products, particularly acellular dermal matrices, have revolutionized breast reconstruction in the modern era. However, microvascular free flap breast reconstruction has also witnessed profound advancements with exceptionally high success rates, with the ability to provide the most durable and natural breast reconstruction. Although the pendulum oscillates between prosthesis-based reconstruction and autologous tissue, the present synopsis will focus on autologous free flap breast reconstruction from an historical perspective, recent advancements in microsurgery, and the future of autologous breast reconstruction.

Outcomes of Vascularized Lymph Node Transplantation for Treatment of Lymphedema

BACKGROUND

A growing body of evidence supports the efficacy of surgical treatments for lymphedema. This study reports the outcomes of vascularized lymph node transplantation (VLNT) for the treatment of patients with lymphedema compared with maximal conservative treatment alone.

STUDY DESIGN

Consecutive patients undergoing VLNT to treat primary and secondary lymphedema affecting the upper or lower extremities were included. All patients were optimized preoperatively with conservative therapy. Demographic and treatment information was collected, and outcomes data were electronically captured prospectively; descriptive statistics were performed.

RESULTS

There were 134 patients included that had achieved maximal reductions by conservative therapy preoperatively. This series included jejunal mesenteric (n = 25), groin (n = 43), lateral thoracic (n = 31), omental or right gastroepiploic (n = 21), and submental (n = 14) VLN flaps. At 24 months postoperatively, there were significant reductions in limb volume change (mean [SD] 45.7% [8.7%]; p = 0.002) LDex score (mean [SD] 59.8% [8.7%]; p < 0.001), Lymphedema Life Impact Scale score (mean [SD] 61.6% [5.9]; p < 0.001), and cellulitis episodes (97.9%; p < 0.001). At 3 and 6 months postoperatively, limb volume change was significantly greater for the upper than the lower extremity, otherwise outcomes were similar. There were no flap losses and overall outcomes were similar between the different VLN flap types.

CONCLUSIONS

Treatment of lymphedema using VLNT resulted in progressive, significant reductions in limb volume, bioimpedance spectroscopy measurements of extracellular fluid, and episodes of cellulitis, with improved patient-reported outcomes and limb function measures compared with maximal conservative therapy alone. The complication rate was low and there were no significant outcomes differences between the VLNT types.

Stewart-Treves syndrome: Case report and literature review

Lymphangiosarcoma, or Stewart-Treves Syndrome (STS), is a very rare skin angiosarcoma with poor prognosis, which usually affects the upper limbs of patients who underwent breast cancer surgery, including axillary dissection followed by radiotherapy (RT). Cutaneous lymphangiosarcomas, which account for approximately 5% of all angiosarcomas, usually originate in the limb with chronic lymphedema. Lymphatic blockade is involved in the onset of STS. RT contributes indirectly to an increased risk of developing STS by causing axillary-node sclerosis and resulting in a lymphatic blockade and lymphedema. Chronic lymphedema causes local immunodeficiency, which indirectly leads to oncogenesis. Currently, axillary nodes are no longer routinely irradiated after axillary dissection, which is associated with a reduction in the incidence of chronic lymphedema from 40% to 4%. The use of sentinel lymph node biopsy technique is also widespread and the associated risk of lymphedema is further reduced. Thus, the incidence of STS decreased significantly with improved surgical and radiation techniques. The overall prognosis of STS patients is very poor. Only early radical surgical removal, including amputation or disarticulation of the affected limb, or wide excision at an early stage offers the greatest chance of long-term survival. Only a few case reports and series with a small number of patients with lymphangiosarcoma can be found in the literature. We present a case report of the first diagnosed STS at our department in an effort to highlight the need of the consideration of developing lymphangiosarcoma in patients with chronic lymphedema.

Morbidity of marginal mandibular nerve post vascularized submental lymph node flap transplantation

BACKGROUND

This study investigated the morbidity of the marginal mandibular nerve (MMN) post vascularized submental lymph node (VSLN) harvest.

METHODS

The VSLN with sacrifying or preserving the medial platysma was retrospectively classified as group I or II. Midline deviation and horizontal tilt were subjectively evaluated. Horizontal, vertical, and "area distribution" of the lower lip excursions of the surgical site were objectively compared with the nonsurgical site.

RESULTS

Seventeen patients in group I and 12 patients in group II were included. At a median follow-up of 48.6 ± 16.8 months in group I and 14.8 ± 7.5 months in group II, no MMN palsy was found in both groups. Median midline deviation and horizontal tilt were 4.53 ± 0.52 and 5 ± 0 in group I and 4.67 ± 0.65 and 5 ± 0 in group II, respectively (P = .419 and 1.000). Median horizontal, vertical and area of distribution of lower lip excursions were 97.5 ± 12.3%, 98.8 ± 14.4% and 87.2 ± 14.7% in group I, and 99.3 ± 15.1%, 95.8 ± 8.2% and 84.2 ± 14.2% in group II, respectively (P = .679, .948 and .711).

CONCLUSION

The VSLN flap was a safe procedure with minimal MMN morbidity.

Simultaneous Ipsilateral Vascularized Lymph Node Transplantation and Contralateral Lymphovenous Anastomosis in Bilateral Extremity Lymphedema with Different Severities

Background

Extremity lymphedema can occur bilaterally with different severities on each side. The aim of this study is to investigate the treatment outcomes of such patients with bilateral extremity lymphedema of different severities.

Patients and Methods

Between 2013 and 2017, patients with bilateral extremity lymphedema of different severities according to the Taiwan Lymphoscintigraphy Staging (TLS) system were retrospectively reviewed. Ipsilateral vascularized lymph node transplantation (VLNT) was indicated in TLS total obstruction and contralateral lymphovenous anastomosis (LVA) in TLS partial obstruction with patent lymphatic vessels on indocyanine green lymphography. Outcomes were assessed using circumference improvement, frequency of cellulitis, and lymphedema-specific quality of life (LYMQoL) questionnaires.

Results

A total of 10 patients with bilateral extremity lymphedema with median age of 63 (range 12–75) years were included. The median symptom duration of the lymphedematous limb was 60 (range 36–168) months and 12 (range 1–60) months in the VLNT and LVA group, respectively (p < 0.05). At average follow-up of 37.5 (range 14–58) months, the average limb circumference improvement was 2.4 (range − 3.3 to 7.8) cm in the VLNT group and 2.3 (range 0.3–7) cm in the LVA group (p = 1). The median episodes of cellulitis decreased significantly from 4 to 0.5 and 1 to 0 times/year in the VLNT and LVA group, respectively (p = 0.02, p = 0.06). The overall LYMQoL score improved from 4.5 preoperatively to 7.5 postoperatively (p < 0.01).

Conclusions

Limb-specific VLNT and LVA selected by TLS effectively treated bilateral extremity lymphedema with different severities.

Combining vascularized lymph node transfer with autologous breast reconstruction: A Surveillance, Epidemiology and End Results (SEER) Database cost-utility analysis

BACKGROUND

The cost effectiveness of combining vascularized lymph node transfer (VLNT) with autologous breast reconstruction has not been established. Herein we describe the use of Markov modeling to evaluate the cost utility of VLNT with delayed autologous breast reconstruction for patients with breast cancer related lymphedema (BCRL).

METHODS

We conducted a cost effectiveness analysis using a Markov model with microsimulation. The characteristics and associated life expectancy of the hypothetical patients were derived from the Surveillance, Epidemiology, and End Results database. Costs of were derived from the publicly available sources and health economics literature. The utilities were based on the best available literature. The relative effectiveness of VLNT was derived from a meta-analysis of the literature. A specific strategy is considered attractive if the estimate of incremental cost effectiveness ratio (ICER) is less than the amount decision makers are willing to pay for an additional quality-adjusted life-year (QALY) gain. A baseline willingness to pay of $50,000 USD per additional QALY was used for analysis.

RESULTS

The base case situation demonstrated an overall ICER of $13898.76/QALY for adding VLNT to delayed autologous abdominally based breast reconstruction in the situation where lymphedema is already present, which suggests it is cost-effective at the chosen willingness to pay.

DISCUSSION

This cost-utility simulation demonstrates that it is cost effective to combine delayed breast reconstruction with VLNT in patients with existing lymphedema. This could have implications for the application of the evolving technique of VLNT in the treatment of different subpopulations of breast cancer patients, and future clinical research.

Optimizing Quality of Life for Patients with Breast Cancer-Related Lymphedema: A Prospective Study Combining DIEP Flap Breast Reconstruction and Lymphedema Surgery

BACKGROUND

Patients with breast cancer-related lymphedema can be treated with a simultaneous deep inferior epigastric perforator (DIEP) flap, vascularized inguinal lymph node transfer, and lymphovenous anastomosis for aesthetic breast reconstruction and lymphedema in one operation.

METHODS

The authors performed a comparison of prospectively followed patients who underwent free flap breast reconstruction with vascularized inguinal lymph node transfer and anastomosis to a retrospective cohort of patients who underwent free flap breast reconstruction with vascularized inguinal lymph node transfer alone.

RESULTS

Thirty-three patients underwent DIEP flap reconstruction with vascularized inguinal lymph node transfer and lymphovenous anastomosis, and 21 received a free flap with lymph node transfer alone. There were no significant differences in demographics, adjuvant chemotherapy, or radiation therapy. The average number of nodes removed was also equivalent (21.2 versus 21.4 nodes). Two anastomoses per patient, on average, were performed (range, one to four) in the combined cohort, and all patients (100 percent) reported a subjective improvement in symptoms, compared with 81.0 percent of patients undergoing only lymph node transfer (p = 0.019). Perometer measurements demonstrated a significant reduction between the groups at early time points [3 months, 40.7 percent versus 20.0 percent (p = 0.037); 6 months, 57.0 percent versus 44.5 percent (p = 0.043)]; however, the difference was not statistically significant at 12 months (60.4 percent versus 57.8 percent; p = 0.43).

CONCLUSION

This is the first prospective study demonstrating the safety and efficacy of a combined DIEP flap with vascularized inguinal lymph node transfer and lymphovenous anastomosis, which may be superior to lymph node transfer alone.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

Impact of body mass index on long-term surgical outcomes of vascularized lymph node transfer in lymphedema patients

Background

Vascularized lymph node transfer (VLNT) is a surgical procedure with high interest to treat lymphedema. Body mass index (BMI) is a well-described factor that increases the risk of lymphedema, but little is known about its influence on the surgical outcomes of lymphedema patients who undergo VLNT. The aim of this study was to analyze the impact of preoperative BMI on the long-term surgical outcomes after VLNT in lymphedema patients.

Methods

We retrospectively compiled data of patients with International Society of Lymphology (ISL) stage II or III lymphedema who were treated with VLNT from July 2010 to July 2016 at China Medical University Hospital. Preoperative and postoperative demographic and clinical data, such as limb circumference and number of infection episodes were reviewed. Statistical analyses compared circumference reduction rates and infection episode reduction between preoperative BMI categories was done. In addition, prediction of outcomes based on quantitative preoperative BMI was analyzed.

Results

A total of 83 patients met the inclusion criteria. Nine patients (10.8%) were normal weight, 43 (51.8%) were overweight, and 31 (37.3%) were obese. Compared with normal-weight patients, mean circumference reduction rates were significantly lower in overweight (P=0.005) and obese patients (P=0.02), but quantitative BMI was not correlated with circumference reduction rate (P=0.96). However, obese patients had a significantly greater reduction in infection episodes than normal-weight patients (P=0.03). In addition, greater BMI predicted greater reduction in infection episodes after VLNT (P=0.02).

Conclusions

VLNT is an effective surgical treatment, especially for lymphedema patients with higher preoperative BMIs. The results of our study suggest that this procedure considerably decreases the number of postoperative infection episodes per year in obese patients, even though preoperative BMI does not influence circumference reduction rate.

Lymphaticovenular anastomosis for breast cancer-related upper extremity lymphedema: a literature review

Breast cancer-related lymphedema is a long-term condition that affects almost half of breast cancer survivors. Clinical studies have looked at the benefits of lymphaticovenular anastomosis (LVA) for the treatment of upper extremities lymphedema after breast cancer, however, there is still controversy if it improves lymphedema. This study aimed to analyze the studies and outcomes related to LVA for breast cancer-related lymphedema. A PubMed/Medline search was performed using "lymphovenous bypass", "upper extremity lymphedema", "arm lymphedema after breast cancer treatment", and "lymphaticovenular anastomosis" as key words. Only English articles reporting outcomes after LVA were included. We found 22 articles that met the inclusion criteria. Positive outcomes were found in 21 studies with an objective volume reduction and subjective symptoms relief after LVA. This literature review concluded that LVA has demonstrated a significant decrease in upper extremity volumes and an improvement in subjectively reporting symptoms in breast cancer-related lymphedema patients.