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640 patients from a specialist clinic for operative lymphology were surveyed with the help by a questionnaire issued by the German Society of Pain Therapy (Deutsche Schmerzgesellschaft e. V.). This survey collected responses to questions about pain and pain characteristics as well as demographic data. It revealed that only a little more than 50 % of respondents were genuine cases of obesity. Lipoedema and obesity must therefore be regarded as clinical pictures unrelated to one another. The pain was mostly described as pressing and tearing in nature. Attributes such as throbbing or pulsing, consistent with acute inflammation, were rated as "not applicable". Symptoms were independent of the BMI, which is only useable to a limited extent in lipohyperplasia dolorosa. On the whole, the main symptom "pain" is multi-faceted. The study initiated by the German Federal Joint Committee (G-BA) must therefore be viewed critically. Congenital (as opposed to acquired) lipoedema fat on the extremities significantly impairs a person's ability to undertake activities in general as well as leisure activities. Since no objectively verifiable findings in lipoedema can be ascertained thus far, the diagnosis should be based on a careful patient survey.

INTRODUCTION: Lipedema is a barely recognized and poorly diagnosed, but common disease affecting almost exclusively female patients. The pathomechanism of lipedema is not known, and clinically, it is a bilateral, symmetrical, disproportional fatty enlargement of the lower half of the body, the disease does not affect the feet, and the upper extremities are often involved. Since lipedema is associated with increased aortic stiffness and altered left ventricular (LV) rotational mechanics, the present study was designed to compare the size and function of the mitral annulus (MA) between lipedema patients and controls by three-dimensional speckle-tracking echocardiography (3DSTE). METHODS: Twenty-four patients with stage 2 lipedema and 48 age-, gender-, and body mass index-matched healthy control patients were included in the study. Each person from the lipedema and the control groups underwent two-dimensional Doppler echocardiography and 3DSTE. RESULTS: Significantly enlarged left atrial diameter, LV end-diastolic diameter and volume, and LV end-systolic volume could be detected in lipedema patients as compared to controls. None of the lipedema patients and controls showed ≥grade 1 mitral or tricuspid regurgitation. Dilated end-systolic and end-diastolic MA diameter, area, and perimeter could be demonstrated in lipedema patients as compared to controls, and these changes were accompanied by impaired MA fractional area change at rest. Following 1-hour use of compression stockings, no significant improvement was seen in these parameters. CONCLUSIONS: Lipedema is associated with MA enlargement and functional impairment. The use of compression stockings does not improve these alterations.

OBJECTIVE: The aim of this qualitative review is to provide an update on the current understanding of the genetic determinants of lipedema and to develop a genetic test to differentiate lipedema from other diagnoses. MATERIALS AND METHODS: An electronic search was conducted in MEDLINE, PubMed, and Scopus for articles published in English up to March 2019. Lipedema and similar disorders included in the differential diagnosis of lipedema were searched in the clinical synopsis section of OMIM, in GeneCards, Orphanet, and MalaCards. RESULTS: The search identified several genetic factors related to the onset of lipedema and highlighted the utility of developing genetic diagnostic testing to help differentiate lipedema from other diagnoses. CONCLUSIONS: No genetic tests or guidelines for molecular diagnosis of lipedema are currently available, despite the fact that genetic testing is fundamental for the differential diagnosis of lipedema against Mendelian genetic obesity, primary lymphedema, and lipodystrophies.

Background: The Stemmer sign is a physical examination finding used to diagnose lymphedema. If the examiner cannot pinch the skin of the dorsum of the foot or hand then this positive finding is associated with lymphedema. The purpose of the study was to determine the accuracy of the Stemmer sign to predict lymphedema. Methods: All patients referred to our Lymphedema Program between 2016 and 2018 were tested for the Stemmer sign and underwent lymphoscintigraphy to define the patient’s lymphatic function. Patient age, lymphedema type (primary and secondary), disease location (arm and leg), lymphoscintigraphy findings, stage, severity, and body mass index were recorded. Comparison of predictive variables and Stemmer sign result was performed using Fisher’s exact test and Student’s t test. Results: One hundred ten patients were studied: patients with a positive Stemmer sign (n = 87) exhibited abnormal (n = 80) or normal (n = 7) lymphatic function by lymphoscintigraphy (sensitivity = 92%). False-positive Stemmer signs included individuals with obesity (n = 6) or spinal muscle atrophy (n = 1). Subjects with a negative Stemmer sign (n = 23) had normal (n = 13) or abnormal (n = 10) lymphatic function by imaging (specificity = 57%). Patients with a false-negative Stemmer sign were more likely to have a normal body mass index (P = 0.02) and Stage 1 disease (P = 0.01). Conclusions: A positive Stemmer sign is a sensitive predictor for primary and secondary lymphedema of the arms or legs and, thus, is a useful part of the physical examination. Because the test exhibits moderate specificity, lymphoscintigraphy should be considered for patients with a high suspicion of lymphedema that have a negative Stemmer sign.

Background: Metastatic tumor cells spread through lymphatic vessels and colonize draining lymph nodes (LNs). It is known that tumors induce lymphangiogenesis to enhance lymphatic metastasis and that metastatic cancer cells are carried by lymph flow to LNs. Methods and Results: Here, we investigated the molecular and cellular regulation of collecting lymphatic vessel contraction in vessels draining a metastatic tumor using intravital microscopy. In tumor-draining collecting lymphatic vessels, we found vessel contraction was suppressed. The infiltration of peritumor tissue by inducible nitric oxide synthase positive and CD11b+Gr1+ myeloid cells played a critical role in the suppression of lymphatic contraction. Depletion of Gr1+ cells with an anti-Gr1 antibody improved contraction of tumor-draining lymphatic vessels. In addition, inducing tumor cell death restored lymphatic contraction in nude mice. Conclusions: These findings indicate that tumors contribute to regulation of lymphatic transport in a reversible manner, warranting further investigation into the role of impaired lymphatic transport in cancer progression.

INTRODUCTION: Lipoedema is a chronic disorder of adipose tissue, characterised by disproportionate fat deposits in the lower limbs and pain with preservation of the feet. The condition usually only affects women. Diagnosis is clinical and mainly by exclusion. This disorder is little known and underdiagnosed. The objective of this article was to perform a non-systematic review of the literature on lipoedema, its diagnostic criteria and proposed treatments. METHODOLOGY: A literature search was carried out from January 2012 to January 2018, in the following databases: Pubmed, Scopus, Medline, Web of Science and CINAHL. SELECTION OF STUDIES: A total of 12 articles were included, of which 10 were reviews, one was a cross-sectional study and another was a case series. CONCLUSIONS: Diagnosis of lipoedema is mainly clinical and through exclusion of other disorders. There is no consensus on its treatment, but treatment focuses on attempting to minimise symptoms and prevent disease progression and the disability it may generate.

Background: Lymphedema and chronic edema is a major health care problem in both developed and nondeveloped countries The Lymphoedema Impact and Prevelance - International (LIMPRINT) study is an international health service-based study to determine the prevalence and functional impact in adult populations of member countries of the International Lymphoedema Framework (ILF). Methods and Results: A total of 1051 patients from eight centers in Turkey were recruited using the LIMPRINT study protocol. Data were collected using the core and module tools that assess the demographic and clinical properties as well as disability and quality of life (QoL). Most of the Turkish patients were recruited from specialist lymphedema services and were found to be women, housewives, and having secondary lymphedema because of cancer treatment. The duration of lymphedema was commonly <5 years and most of them had International Society of Lymphology (ISL) grade 2 lymphedema. Cellulitis, infection, and wounds were uncommon. The majority of patients did not get any treatment or advice before. Most of the patients had impaired QoL and decreased functionality, but psychological support was neglected. Although most had social health security access to lymphedema centers, nevertheless access seemed difficult because of distance and cost. Conclusion: The study has shown the current status and characteristics of lymphedema patients, treatment conditions, the unmet need for the diagnosis and treatment, as well as burden of the disease in both patients and families in Turkey. National health policies are needed for the prevention, diagnosis, and treatment in Turkey that utilize this informative data.

Obese adipose tissue expansion is an inflammatory process that results in dysregulated lipolysis, increased circulating lipids, ectopic lipid deposition, and systemic insulin resistance. Lymphatic vessels provide a route of fluid, macromolecule, and immune cell clearance, and lymphangiogenesis increases this capability. Indeed, inflammation-associated lymphangiogenesis is critical in resolving acute and chronic inflammation, but it is largely absent in obese adipose tissue. Enhancing adipose tissue lymphangiogenesis could, therefore, improve metabolism in obesity. To test this hypothesis, transgenic mice with doxycycline-inducible expression of murine vascular endothelial growth factor (VEGF)-D under a tightly controlled Tet-On promoter were crossed with adipocyte-specific adiponectin-reverse tetracycline-dependent transactivator mice (Adipo-VD) to stimulate adipose tissue-specific lymphangiogenesis during 16-week high-fat diet-induced obesity. Adipose VEGF-D overexpression induced de novo lymphangiogenesis in murine adipose tissue, and obese Adipo-VD mice exhibited enhanced glucose clearance, lower insulin levels, and reduced liver triglycerides. On β-3 adrenergic stimulation, Adipo-VD mice exhibited more rapid and increased glycerol flux from adipose tissue, suggesting that the lymphatics are a potential route of glycerol clearance. Resident macrophage crown-like structures were scarce and total F4/80+ macrophages were reduced in obese Adipo-VD s.c. adipose tissue with evidence of increased immune trafficking from the tissue. Augmenting VEGF-D signaling and lymphangiogenesis specifically in adipose tissue, therefore, reduces obesity-associated immune accumulation and improves metabolic responsiveness.

Background: Chronic edema/lymphedema is defined as edema present for more than 3 months. It is underrecognized and undertreated. The International Lymphedema Framework developed an international study, Lymphedema Impact and Prevalence International (LIMPRINT), to estimate the prevalence and impact of chronic edema in heterogeneous populations. Canada participated in this study. Methods and Results: Participants were recruited from an outpatient chronic wound management clinic. At a study visit, the following tools were administered: The Core Tool, Demographics and Disability assessment (WHODAS 2.0), Quality-of-life assessment (LYMQOL + EQ-5D), Details of swelling, Wound assessment, and Cancer. Data were entered into an international database (Clindex), and country-specific data were analyzed. Sixty-eight subjects were enrolled. Fifty-seven percent were males and 43% females. More than 90% were older than 45 years. Only 7.35% had primary lymphedema. Most had lower extremity edema (65 of 68). Over half (47.06%) were morbidly obese with body mass index of >40. The most common underlying condition was venous disease. Only 8 of 68 had a history of cancer. While 72.06% had a history of cellulitis, only 10.2% had been hospitalized in the past year. 39.71% had an open wound. More than 75% had received multilayer bandaging, compression garments, wound dressings, and extensive counseling. Few had received manual lymphatic drainage, which is not funded. Disability was less than expected. Conclusion: Chronic edema/lymphedema is an underrecognized condition. These data and the wider LIMPRINT study are important tools to advocate for wider recognition and funding of treatment by health care systems.

Lipoedema used to be a rather unknown disease. In the past five years, it has gained increasing awareness, especially through media attention. Besides non-surgical treatment by complex conservative decongestion, there are an increasing number of studies pointing out the potential of liposuction for a successful treatment of lipoedema. As a result, an increasing number of affected patients present to plastic surgeons and request correction and pain relief.As the German Federal Joint Committee (Gemeinsamer Bundesausschuss (G-BA)) has not positively acknowledged liposuction as a treatment for lipoedema so far, coverage of the procedure by the statutory health insurance is still a decision on a by-case basis. Therefore, patients seeking liposuction treatment must apply for prior cost approval from the statutory health insurance in cooperation with their plastic surgeon. The review at hand provides a summary of the current prevailing legal norms and gives advice on how to apply for prior cost approval.

In case of an acute leg swelling a deep leg vein thrombosis needs to be excluded. In order to do this, compression sonography and the D-dimer-test are applied in the framework of an established diagnostic algorithm. The ensuing therapy consists in anticoagulation and compression.In case of a chronic leg swelling anamnesis and a clinical check-up often lead to a differential diagnosis. Chronic venous insufficiency is a generic term for a disturbed venous backflow. It is caused by an obstruction or an antegrade or retrograde flow insufficiency. Most common diseases in this context are varicosis or a post-thrombotic syndrome. Sonography and special function tests provide a diagnosis. The basic therapy consists in regular exercise, normalization of weight and compression therapy. In case of a hemodynamically relevant varicose vein surgery or endovascular treatment is advisable. The post-thrombotic syndrome must be treated consistently with the basic therapy.A lymphedema may be hereditary or acquired. In a first step diseases like neoplasia need to be excluded. The initial therapy consists in manual lymph drainage in combination with special compression bandages. Flat knit stockings should be prescribed. Surgical treatment is reserved for special circumstances.A lipedema is clinically diagnosed. It is characterized by lipohypertrophia, pressure sensitivity of the tissue and susceptibility to hematomas. Treatment options include weight reduction, regular exercise, lymph drainage and compression therapy, in some cases liposuction.

Lipedema is a chronic disabilitating disease affecting the subcutaneous adipose tissue of the extremities in females during or after puberty. The disease is characterized by bilateral swelling of legs and/or arms, bruising, and pain. In contrast to lymphedema, the most distal parts remain unaffected. In contrast to obesity, patients with lipedema have a lower risk of diabetes mellitus. The pathogenesis is not well understood. However, hormonal factors seem to play a vital role, as it is an exclusively female disorder. The recent advantages in understanding and treating lipedema are reviewed.

Lipedema is a painful disease of subcutaneous adipose tissue leading to bilateral increase of leg and/or arm volume, but sparing hands and feet. Although conservative treatment with complex decongestive therapy has been considered as the fundamental treatment, micro-cannular liposuction in tumescent anesthesia has become a surgical option. We report on 111 patients mostly with advanced lipedema treated by this technique in our center between 2007 and 2018. The median age of the patients was 44 years. Eighty percent of patients had at least one comorbidity. There was an association of longstanding and advanced disease to obesity and diseases of the metabolic syndrome-spectrum. The median total amount of lipoaspirate was 4,700 ml, with a range of 950-14,250 ml. The median reduction of limb circumference was 6 cm. The median pain level before treatment was 7.8 and 2.2 at the end of the treatment. An improvement of mobility could be achieved in all patients. Bruising was also reduced. Serious adverse events were observed in 1.2% of procedures, the infection rate was 0% and the bleeding rate was 0.3%. Liposuction is an effective treatment for painful lipedema. The procedure should be performed in specialized centers.

Current clinical methods for the evaluation of lymphatic vessel function, crucial for early diagnosis and evaluation of treatment response of several pathological conditions, in particular of postsurgical lymphedema, are based on complex and mainly qualitative imaging techniques. To address this unmet medical need, we established a simple strategy for the painless and quantitative assessment of cutaneous lymphatic function. We prepared a lymphatic-specific tracer formulation, consisting of the clinically approved near-infrared fluorescent dye, indocyanine green, and the solubilizing surfactant Kolliphor HS15. The tracer was noninvasively delivered to the dermal layer of the skin using MicronJet600 hollow microneedles, and the fluorescence signal decay at the injection site was measured over time using a custom-made, portable detection device. The decay rate of fluorescence signal in the skin was used as a direct measure of lymphatic vessel drainage function. With this method, we could quantify impaired lymphatic clearance in transgenic mice lacking dermal lymphatics and distinguish distinct lymphatic clearance patterns in pigs in different body locations and under manual stimulus. Overall, this method has the potential for becoming a noninvasive and quantitative clinical "office test" for lymphatic function assessment.