Are anamnesis, examination and/or technical investigations of the skin and subcutaneous adipose tissue able to discriminate between lipedema and women without leg affections?

Introduction After unification of diagnostic criteria for lipedema through guidelines and consensus documents as a fat-disproportion between abdomen and extremities with pain in the affected area, reduced by compression, expensive treatment options like liposuction should be reserved to affected women. Whilst the diagnosis of lipedema is obviously clinic, technical investigations or clear cut-offs shall help avoiding misuse of resources. The aim of this study was to find differentiation criteria between lipedema (LIP) controls (CO). Methods Investigator initiated exploratory investigation of 20 women per group, with interim analysis after completion of investigation of 10 women per group. 14 LIP and 12 CO were investigated with QOL-questionnaires (CIVIQ and Lymph), Wunstorf-Vein-Office anamnesis questionnaire, Visual Analogue Scale (VAS) of spontaneous pain, Pain under manual investigation, pain under compression cuffs, ultrasound of skin and subcutaneous fat tissue, share-wave-elastography, water content of skin (LymphScanner) and stiffness of skin (FibroScanner). Results Statistical evaluation between LIP and CO presented significant differences for all parameters excepting share-wave-elastography, water content and stiffness of the skin. Differences between controls and Lipedema were achieved with p < .0001 for the Wunstorf-Vein-Questionnaire, with p < .001 for CIVIQ (cut-off >40 Points for LIP), compression cuff (cut-off <60mmHG), with p < .01 Skin thickness (skin lateral thigh >2.1 mm in LIP), fat tissue thickness (ankle >18 mm). Conclusion This first analysis could establish a series of clear cut-off values between lipedema and controls for medical history parameters (existence of pain and compliance with compression garments), pain sensitivity to palpation and pressure, and the results of at least one quality-of-life questionnaire (CIVIQ better than Lymph-QOL) and promising cut-offs for objective, technically measurable parameters, such as skin and subcutaneous fat thickness. The possibility to discriminate between lipedema and lipohypertrophy will be assessed in the second part of the investigation.