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The term lipedema is misleading, although it is true that there is an alteration of the fatty tissue, there is little evidence regarding edema. It is considered a disease since the last ICD‑11 (2019), included in the section of pathologies of skin, fat and subcutaneous cellular tissue. However, there are still doubts about whether it should be considered a disease or whether it is an aesthetic disorder. The diagnosis of lipedema can present challenges, since it is often confused with other nosological entities; especially with lymphedema. The aim of this task is to determine the basis for a correct differential diagnosis that helps to recognize lipedema as an entity with its own characteristics in order to facilitate its early identification. Clinical manifestations, plus the anamnesis and detailed examination of each patient, may be sufficient to reach a correct diagnosis. In case of doubt, there are tests capable of differentiating between lipedema and lymphedema. Differential diagnosis between lipedema and lymphedema should be made thoroughly and early in order to offer early advice and specific treatment to patients.

BACKGROUND: Regenerative therapies like cell-assisted lipotransfer or preclinical experimental studies use adipose tissue-derived stem cells (ASCs) as the main therapeutic agent. But there are also factors depending on the clinical donor that influence the cell yield and regenerative potential of human ASCs and stromal vascular fraction (SVF). Therefore, the aim of this review was to identify and evaluate these factors according to current literature. METHODS: For this purpose, a systematic literature review was performed with focus on factors affecting the regenerative potential of ASCs and SVF using the National Library of Medicine. RESULTS: Currently, there is an abundance of studies regarding clinical donor factors influencing ASCs properties. But there is some contradiction and need for further investigation. Nevertheless, we identified several recurrent factors: age, sex, weight, diabetes, lipoedema, use of antidepressants, anti-hormonal therapy and chemotherapy. CONCLUSION: We recommend characterisation of the ASC donor cohort in all publications, regardless of whether they are experimental studies or clinical trials. By these means, donor factors that influence experimental or clinical findings can be made transparent and results are more comparable. Moreover, this knowledge can be used for study design to form a homogenous donor cohort by precise clinical history and physical examination.

Lipedema (LI) is a common yet misdiagnosed condition, often misconstrued with obesity. LI affects women almost exclusively, and its painful and life-changing symptoms have long been thought to be resistant to the lifestyle interventions such as diet and exercise. In this paper, we discuss possible mechanisms by which patients adopting a ketogenic diet (KD) can alleviate many of the unwanted clinical features of LI. This paper is also an effort to provide evidence for the hypothesis of the potency of this dietary intervention for addressing the symptoms of LI. Specifically, we examine the scientific evidence of effectiveness of adopting a KD by patients to alleviate clinical features associated with LI, including excessive and disproportionate lower body adipose tissue (AT) deposition, pain, and reduction in quality of life (QoL). We also explore several clinical features of LI currently under debate, including the potential existence and nature of edema, metabolic and hormonal dysfunction, inflammation, and fibrosis. The effectiveness of a KD on addressing clinical features of LI has been demonstrated in human studies, and shows promise as an intervention for LI. We hope this paper leads to an improved understanding of optimal nutritional management for patients with LI and stimulates future research in this area of study.

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Compression hosiery is commonly used for the management of lymphoedema as well as lipoedema, but it is more commonly indicated for the lower limbs than for the upper limbs. The effects of compression hosiery on upper-limb lipoedema are poorly understood and researched. It is known that compression hosiery works in conjunction with activity or movement when standing or walking, which produces anti-inflammatory and oxygenating effects in the tissues. This effect is naturally difficult to realise in the upper limbs. Lymphoedema practitioners who treat those with lipoedema should bear in mind that compression treatment might not produce the same effects in upper-limb lipoedema as it does in lower-limb lipoedema. In these times of an overstretched health service, pragmatic resource use is essential.

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Lymphedema is the chronic, progressive swelling of tissue due to inadequate lymphatic function. Over time, protein-rich fluid accumulates in the tissue causing it to enlarge. Lymphedema is a specific disease and should not be used as a generic term for an enlarged extremity. The diagnosis is made by history and physical examination, and confirmed with lymphoscintigraphy. Intervention includes patient education, compression, and rarely, surgery. Patients are advised to exercise, maintain a normal body mass index, and moisturize / protect the diseased limb from incidental trauma. Conservative management consists of compression regimens. Operative interventions either attempt to address the underlying lymphatic anomaly or the excess tissue. Lymphatic-venous anastomosis and lymph node transfer attempt to create new lymphatic connections to improve lymph flow. Suction-assisted lipectomy and cutaneous excision reduce the size of the area by removing fibroadipose hypertrophy.

Lipoedema is a chronic progressive disorder of adipose tissue leading to an enlargement of lower extremities. It is considered to be rare; however, the prevalence of the disease is underestimated because it is commonly misdiagnosed as obesity or lymphedema and the general awareness is poor. The etiology of the disorder is considered to be multifarious, including genetic inheritance, hormonal imbalance and microcirculation alterations. Diagnosis is mainly based on medical history and physical examination. Management of lipoedema is focused on reducing the symptoms, improving the quality of life and preventing further progression of the disease. The aim of this paper is to raise the awareness of the disease and provide appropriate clinical guidance for the assessment of lipoedema. We searched through the PubMed/MEDLINE database and took into consideration all of the results available as of 6September, 2020 and outlined the current evidence regarding lipoedema epidemiology, etiology, clinical presentation, differential diagnosis, and management. Better understanding of lipoedema is crucial for establishing an early diagnosis and a proper treatment, which in turn will reduce the psychological and physical implications associated with the disease.

Lipoedema is associated with widespread adipose tissue expansion, particularly in the proximal extremities. The mechanisms that drive the development of lipoedema are unclear. In this Perspective article, we propose a new model for the pathophysiology of lipoedema. We suggest that lipoedema is an oestrogen-dependent disorder of adipose tissue, which is triggered by a dysfunction of caveolin 1 (CAV1) and subsequent uncoupling of feedback mechanisms between CAV1, the matrix metalloproteinase MMP14 and oestrogen receptors. In addition, reduced CAV1 activity also leads to the activation of ERα and impaired regulation of the lymphatic system through the transcription factor prospero homeobox 1 (PROX1). The resulting upregulation of these factors could effectively explain the main known features of lipoedema, such as adipose hypertrophy, dysfunction of blood and lymphatic vessels, the overall oestrogen dependence and the associated sexual dimorphism, and the mechanical compliance of adipose tissue.

Liposuction is one of the most common procedures undertaken in plastic surgery with a steadily increasing trend over the years. Although usually performed as an aesthetic procedure for body contouring, it can also be utilized in specific patient groups for disease symptom reduction. One such disease entity is lipedema. The goal of this video to present the authors' technique in the surgical treatment of lipedema, and to offer the viewer a better understanding of the differences between an aesthetic liposuction and a functional liposuction as performed on a lipedema patient. Between July 2009 and July 2019, 106 lipedema patients have been treated in the authors' specialized lipedema clinic, with a total of 298 liposuction procedures and a median follow-up of 20 months. The mean amount of lipoaspirate was 6354.73 ml (± 2796.72 ml). The patients reported a significant reduction in lipedema-associated complaints and improvement in quality of life. The need for conservative therapy was significantly reduced. No serious complications were reported. The authors also present before and after photographs of three patients. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

The COVID-19 pandemic poses a challenge to the management of non-COVID pathologies such as lymphatic diseases and lipoedema. The use of telemedicine can prevent the spread of the disease. A system is needed to help determine the clinical priority and selection of face-to-face or telemedicine options for each patient and how to carry them out during the pandemic. The Spanish Lymphology Group has drafted a consensus document with recommendations based on the literature and clinical experience, as clinical practice guidelines for the management of lymphatic abnormalities and lipoedema during the COVID-19 pandemic. These recommendations must be adapted to the characteristics of each patient, the local conditions of the centres, and the decisions of health care professionals. The document contains minimum criteria, subject to modifications according to the evolution of the pandemic, scientific knowledge and instructions from health authorities.

PURPOSE: The aim of this narrative review of the literature was to evaluate and summarize the current literature regarding the effect of lipedema on health-related quality of life (HRQOL) and psychological status. METHODS: The authors collected articles through a search into Medline, Embase, Scopus, Web of Science, Physiotherapy Evidence Database (PEDro), and the Cochrane Review. Search terms used included "Lipoedema," "Lipedema," "psychological status," "Quality of life," "Health related quality of life," and "HRQOL." RESULTS: A total of four observational studies were evaluated. The included studies were moderate-quality according to the Newcastle-Ottawa Scale. Three of the included studies demonstrated deterioration of HRQOL and psychological status in patients with lipedema. These studies also identify that pain and tenderness are a more common and dominant characteristic. CONCLUSION: Future studies should establish a specific approach to treat and manage lipedema symptoms. Based on this narrative review of the literature findings, we recommended for the health care provider to pay more attention to HRQOL and psychological status. Moreover, validated and adapted measures of HRQOL and psychological status for patients with lipedema are required. LEVEL OF EVIDENCE: Level V, narrative review.

Mast cells (MCs) are abundant in almost all vascularized tissues. Furthermore, their anatomical proximity to lymphatic vessels and their ability to synthesize, store and release a large array of inflammatory and vasoactive mediators emphasize their significance in the regulation of the lymphatic vascular functions. As a major secretory cell of the innate immune system, MCs maintain their steady-state granule release under normal physiological conditions; however, the inflammatory response potentiates their ability to synthesize and secrete these mediators. Activation of MCs in response to inflammatory signals can trigger adaptive immune responses by dendritic cell-directed T cell activation. In addition, through the secretion of various mediators, cytokines and growth factors, MCs not only facilitate interaction and migration of immune cells, but also influence lymphatic permeability, contractility, and vascular remodeling as well as immune cell trafficking through the lymphatic vessels. In summary, the consequences of these events directly affect the lymphatic niche, influencing inflammation at multiple levels. In this review, we have summarized the recent advancements in our understanding of the MC biology in the context of the lymphatic vascular system. We have further highlighted the MC-lymphatic interaction axis from the standpoint of the tumor microenvironment.

BACKGROUND: Lipedema is often unrecognized or misdiagnosed; despite an estimated prevalence of 10% in the overall female population, its cause is still unknown. There is increasing awareness of this condition, but its differential diagnosis can still be challenging. In this article, we summarize current hypotheses on its pathogenesis and the recommendations of current guidelines for its diagnosis and treatment. METHODS: This review is based on publications about lipedema that were retrieved by a selective search in the MEDLINE, Web of Science, and Cochrane Library databases. RESULTS: The pathophysiology of lipedema remains unclear. The putative causes that have been proposed include altered adipogenesis, microangiopathy, and disturbed lymphatic microcirculation. No specific biomarker has yet been found, and the diagnosis is currently made on clinical grounds alone. Ancillary tests are used only to rule out competing diagnoses. The state of the evidence on treatment is poor. Treatment generally consists of complex decongestive therapy. In observational studies, liposuction for the permanent reduction of adipose tissue has been found to relieve symptoms to a significant extent, with only rare complications. The statutory healthinsurance carriers in Germany do not yet regularly cover the cost of the procedure; studies of high methodological quality will be needed before this is the case. CONCLUSION: The diagnosis of lipedema remains a challenge because of the hetero - geneous presentation of the condition and the current lack of objective measuring instruments to characterize it. This review provides a guide to its diagnosis and treatment in an interdisciplinary setting. Research in this area should focus on the elucidation of the pathophysiology of lipedema and the development of a specific biomarker for it.

Lipedema is a fat disorder that is often misdiagnosed. It was first identified at the Mayo Clinic in 1940, but medical schools do not include it in their curriculum and is therefore poorly understood. It presents as disproportionate and symmetrical accumulations of fat (bilateral), which is often accompanied by orthostatic edema. Early diagnosis and treatment are crucial, as the disease is progressive and can lead to immobility as well as a significant decrease in the quality of life. Lipedema differs from obesity because it does not respond to diet and exercise. This article gives you a glimpse into what lipedema is about and will help you identify some differences between lipedema and lymphedema. It will also help you identify which surgical procedures have been successful in treating the disease.

Lymphoedema is a well-known concern for cancer survivors. A crucial issue in lymphoedema is that we cannot predict who will be affected, and onset can occur many years after initial cancer treatment. The variability of time between cancer treatment and lymphoedema onset is an unexplained mystery. Retrospective cohort studies have investigated the risk factors for lymphoedema development, with extensive surgery and the combination of radiation and surgery identified as common high-risk factors. However, these studies could not predict lymphoedema risk in each individual patient in the early stages, nor could they explain the timing of onset. The study of anatomy is one promising tool to help shed light on the pathophysiology of lymphoedema. While the lymphatic system is the area least investigated in the field of anatomical science, some studies have described anatomical changes in the lymphatic system after lymph node dissection. Clinical imaging studies in lymphangiography, lymphoscintigraphy and indocyanine green (ICG) fluorescent lymphography have reported post-operative anatomical changes in the lymphatic system, including dermal backflow, lymphangiogenesis and creation of alternative pathways via the deep and torso lymphatics, demonstrating that such dynamic anatomical changes contribute to the maintenance of lymphatic drainage pathways. This article presents a descriptive review of the anatomical and imaging studies of the lymphatic system in the normal and post-operative conditions and attempts to answer the questions of why some people develop lymphoedema after cancer and some do not, and what causes the variability in lymphoedema onset timing.

<p>Das Lipödem ist eine progrediente Erkrankung, die immer mehr Frauen betrifft und zunehmend bewusster als Krankheit wahrgenommen wird. Sie ist gekennzeichnet durch eine Umfangsvermehrung durch Fettgewebsvermehrung der Extremitäten und kann im Verlauf zu Ödemen führen. Im Gegensatz dazu ist das Lymphödem durch eine umschriebene Lymphabflussstörung definiert, die zur Bindegewebsfibrose des umliegenden Gewebes führen kann. Während das Lipödem als klinische Diagnose gesichert werden kann und eine bildgebende Diagnostik meist nur zum Ausschluss von Begleiterkrankungen eingesetzt werden kann, gibt es bei einem Lymphödem die Möglichkeit zur Darstellung einer Lymphabflussstörung durch bildgebende Verfahren. Eine Ultraschalluntersuchung ist als Basisdiagnostik zur Darstellung der eingelagerten interstitiellen Flüssigkeit sowohl beim Lip- als auch Lymphödem indiziert. Der Goldstandard zur Darstellung einer Lymphabflussstörung ist die Lymphszintigrafie, die auch in Kombination mit einer Computertomografie durchgeführt werden kann. Eine weitere dynamische Untersuchung ist die Indocyaningrün (ICG)-Lymphografie, deren Durchführung immer mehr an Bedeutung gewinnt, weil sie auch intraoperativ genutzt werden kann. Eine Magnetresonanz (MR)-Lymphografie zur 3-dimensionalen Darstellung eines Lymphödems und einer Lymphabflussstörung kann eine sinnvolle Ergänzung zur Therapie eines Lip- bzw. Lymphödems sein. Zur Therapie des Lip- und Lymphödems sollte stets eine Kombination aus konservativen und operativen Maßnahmen angestrebt werden. Während die Liposuktion und andere resezierende Verfahren Möglichkeiten zur Beschwerdelinderung bei bestehendem Lipödem oder fortgeschrittenem Lymphödem bieten, stellen die neuen rekonstruktiven Verfahren, wie beispielsweise die Lymphknotentransplantation und die Schaffung von lymphovenösen Anastomosen, vielversprechende, moderne Methoden zur Behandlung eines Lymphödems dar. Durch die Schaffung neuer Lymphabflusswege können Patienten mit einem Lymphödem auf eine langfristige Volumenreduktion der betroffenen Extremität oder Körperstelle und der damit verbundenen Symptomlinderung und Verbesserung der Lebensqualität hoffen.</p>

Lipedema is a frequently unrecognized and misdiagnosed disorder of the fatty tissue of extremities and hips, which affects almost purely women. The beginning of the disease usually occurs with hormonal changes, such as puberty, pregnancy, or menopause. Women suffer from pain, easy bruising, and disfigurement, which may lead to early immobility and social stress. Accurate diagnosis and treatment are essential. The differentiation between obesity and lipedema is difficult, as these two different entities often occur together. Other differential diagnoses are lymphedema, benign lipohypertrophy, and Dercum’s disease. A therapy targeting the underlying cause of lipedema is not available because the exact etiology of the disorder is not clarified yet. Decongestive physical therapy is the basic conservative treatment, which is usually necessary lifelong. However, liposuction has led to a paradigm shift in the treatment of lipedema. The purposes of this article are to describe the symptoms and treatment options of the still fairly unknown disease Lipedema and to show the distinctions to its differential diagnoses.