Assessment of the elasticity of lipedematous tissue and the examination of the relationship between pain and fibrosis in lipedema.

BACKGROUND/

objectivesLipedema is a chronic and progressive adipose tissue disorder characterized by the abnormal accumulation of subcutaneous fat, predominantly in the legs and occasionally in the arms. The symptom that most significantly affects the quality of life is pain. Ultrasound elastography is an imaging technology that allows for measuring tissue stiffness quantitatively. This study aims to evaluate the relationship between accompanying pain in patients with lipedema and tissue elasticity measured using shear-wave elastography (SWE).

methodsOur study was designed as an observational, analytical and cross-sectional study. The visual analog scale (VAS) was used to assess pain, while the PainDetect questionnaire was utilized to evaluate neuropathic pain. The evaluation of tissue elasticity and fibrosis was conducted using the SWE method.

resultsThis research assessed thirty-five patients, revealing an average age of 45.2 years and an average body mass index (BMI) of 33.6 kg/m². 60% of the patients had a lipedema diagnosis in their family history. Both age (p < 0.01) and BMI (p < 0.001) values were moderately correlated with all subcutaneous adipose tissue measurements, while no correlation was observed in SWE measurements. Only the level of the thigh in the SWE-Elasticity (SWE-E) values was related to VAS (r = 0.35, p = 0.03). Additionally, PainDetect scores demonstrated significant positive correlations with both SWE-velocity (SWE-V) and SWE-E measurements in the thigh region. Specifically, SWE-V showed moderate correlations with PainDetect scores in the right thigh (r = 0.38, p = 0.02) and left thigh (r = 0.47, p = 0.004), while SWE-E was also significantly correlated in both the right (r = 0.44, p = 0.007) and left thighs (r = 0.44, p = 0.008).

conclusionsWhile SWE measurements were not correlated with skin adipose tissue, SWE measurements were correlated with pain and neuropathic pain in patients with lipedema. This finding highlights a potentially important relationship between tissue elasticity and pain, which may warrant further exploration. SWE offers a novel, non-invasive approach to quantifying tissue stiffness, providing valuable insights into tissue alterations in women with lipedema.