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BACKGROUND: Lipedema is characterized as an abnormal deposition of fat in the buttocks and legs bilaterally that may be accompanied by swelling, pain, and tenderness. It is still often confused with more frequent conditions such as obesity and lymphedema. The estimated prevalence in Europe varies between 0.06% and 39%. OBJECTIVES: To evaluate the prevalence of lipedema and identify health factors related to it in the Brazilian population. METHODS: Administration of a previously validated online screening questionnaire to a representative sample of the general population. The questionnaire was distributed and administered to anonymous volunteers representing the general Brazilian population using software designed for population analyses. RESULTS: 253 women answered the questionnaire, 12.3 ± 4% (Confidence Interval [CI] 95%) of whom presented symptoms compatible with a high probability of being diagnosed with lipedema. Furthermore, anxiety, depression, hypertension, and anemia were also correlated with a high probability of the diagnosis. CONCLUSIONS: The estimated prevalence of lipedema in the population of Brazilian women is 12.3%.

BACKGROUND: Lipedema is a chronic adipose tissue disorder characterized by abnormal and disproportionate fat accumulation in the extremities, leading to pain, edema, and functional impairment. Liposuction has become a central component of surgical management. However, postoperative complications, particularly seroma formation, remain a concern. OBJECTIVES: To evaluate the incidence of postoperative seroma and associated risk factors in patients undergoing liposuction for lipedema treatment, based on procedures performed by a single surgical team in a single institution. METHODS: This retrospective observational study included 93 female patients who underwent liposuction for lipedema between April 2019 and January 2024. Data collected included demographic variables, body mass index (BMI), anesthesia type, volume of aspirated fat, percentage of body weight removed, use of adjunct technologies (ultrasound or laser), association with other surgeries such as varicose vein surgery, and prior conservative treatment. The primary outcome was the development of postoperative seroma. Statistical analysis included Chi-square and Student's t-tests and multivariable logistic regression, with significance set at p ≤ 0.05. RESULTS: Among 93 cases, 17 patients (18.3%) developed postoperative seroma. Higher volumes of aspirated fat (% body weight) were significantly associated with seroma formation (7.27% vs. 5.84%, p = 0.005). Concomitant minor procedures were also linked to increased seroma incidence (p = 0.035). No seromas occurred in patients treated using ultrasound-assisted liposuction. Minor complications included one infection and one hematoma (1.07%). CONCLUSIONS: Liposuction for lipedema is a safe and effective surgical option with a low rate of major complications, but seroma remains a relatively frequent postoperative finding. Higher aspirated fat volumes relative to body weight and the presence of concomitant procedures increase the risk of seroma. No seromas were observed in the ultrasound-assisted group; however, this difference did not reach statistical significance and should be considered only as hypothesis-generating. Further studies are needed to validate these findings and guide surgical decision-making. 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 .

Background  The Questionário de avaliação sintomática do lipedema (QuASiL – Lipedema Symptom Assessment Questionnaire) assesses 13 distinct inflammatory symptoms of lipedema, but whether these symptoms resolve and recur simultaneously or follow a consistent order remains unknown. Objectives  To characterize the persistence hierarchy of the 13 QuASiL inflammatory symptoms in a retrospective lipedema cohort under heterogeneous conservative treatment, using 6 complementary rank-order analyses and testing the null hypothesis that symptoms resolve with equal magnitude. Methods  This retrospective longitudinal study included 1,300 patients who were clinically diagnosed with lipedema by a vascular surgeon and who completed the QuASiL on at least 2 occasions (minimum 14-day interval; median follow-up 181 days, IQR 92–380, maximum 1,787 days). A consensus ranking was computed across all analyses. A sensitivity analysis was conducted using the conventional T0 = first visit, T1 = last visit convention, and a Kaplan-Meier survival analysis estimated the time (in absolute days) to ≥ 50% reduction from baseline per symptom. Results  The symptoms did not resolve simultaneously (Friedman χ2 (12) = 168.08, p < 0.001). All 13 symptoms improved during follow-up, showing a consistent order across the 6 analyses. A slower-resolving core was identified: bruising (consensus rank 1.7), swelling (2.0), touch sensitivity (4.3), leg heaviness (4.7), and fatigue (4.7). A rapidly-responding group comprised skin irritation (66.4% proportional reduction), itching (62.0%), and walking difficulty (62.6%). Even the most resistant symptom (bruising) achieved a mean 39.1% proportional reduction, with half of patients reaching ≥ 50% improvement. During worsening, swelling and pressure/tension re-emerged first. The sensitivity analysis (T0 = first, T1 = last) produced an essentially identical ranking (Spearman ρ = 0.945, p < 10−5). The Kaplan-Meier analysis estimated a median of 546 days for bruising vs 207 days for itching to reach ≥ 50% reduction from baseline (log-rank χ2 = 44.6, p < 10−10); the fastest-resolving symptom was heat/burning at 203 days. Conclusions  In this retrospective cohort of patients under heterogeneous conservative treatment, the 13 QuASiL inflammatory symptoms improved following a consistent order across 6 independent analyses, with bruising and swelling as the most persistent symptoms. Keywords: lipedema; inflammatory symptoms; resolution order; bruising; patient-reported outcomes; longitudinal study

BACKGROUND: Lipedema is characterized by the deposition of abnormal fat in the lower and upper limbs bilaterally. It is a disease with high prevalence and genetic characteristics. Non-specific and non-quantified increases in the thickness of the subcutaneous tissue have previously been demonstrated using magnetic resonance imaging and computed tomography. OBJECTIVES: To evaluate the thickness of the dermis and subcutaneous tissue in predetermined areas as a distinguishing feature between individuals with and without lipedema using ultrasound. METHODS: Ultrasound images of 89 female patients were analyzed, including patients undergoing clinical investigation for venous insufficiency or lipedema who underwent ultrasound evaluations at our institution. Patients were divided in two groups: with lipedema clinically diagnosed and those without lipedema. They underwent a common Doppler protocol for venous mapping to assess venous insufficiency associated with the evaluation of dermis and subcutaneous thickness at pre-defined points of the lower limbs. RESULTS: There were 63 patients with lipedema. Anterior thigh, pre-tibial and lateral aspect of the leg and supra-just medial malleolar region were significantly different. Supra-just medial malleolar region was significantly different with BMI above 25. An optimal cutoff value was calculated for the ultrasound diagnosis of lipedema using thickness of the dermis and subcutaneous tissues. CONCLUSIONS: Studied criteria allow use of simple and reproducible ultrasound cutoff values to diagnose lipedema in the lower limbs. Pre-tibial region thickness measurement, followed by thigh and lateral leg thickness are recommended for the ultrasound diagnosis of lipedema.