Lipedema: what ultrasound adds to the clinical diagnosis

Ultrasound criteria for skin and subcutaneous thickness help differentiate lipedema from lymphedema and simple obesity — in a diagnosis that is still, for the most part, clinical.

Lipedema remains, for the most part, a clinical diagnosis — but the difficulty in distinguishing it from lymphedema and common obesity has driven the search for objective criteria, and high-resolution ultrasound (18–20 MHz) is where that search has advanced the most.

What the ultrasound measurement shows

Studies with standardized pretibial, thigh, and lateral-leg thickness measurements showed increased thickness and greater echogenicity of subcutaneous tissue in patients with lipedema — while dermal thickness alone was not a good discriminator in most series.

Where this helps in practice

Besides the differential diagnosis with lymphedema, serial measurements over time allow tracking the response to conservative treatment — a still uncommon use, but one with the potential to make follow-up less subjective.