[Imaging subcutaneous atrophy in circumscribed scleroderma with 20 MHz B-scan ultrasound].

The technique of 20-MHz B-scan sonography is non-invasive and allows quantification of the different compartments of the skin. Seven patients with atrophic linear circumscribed scleroderma and one patient with guttate circumscribed scleroderma were examined by ultrasound. All patients were found to have a total or subtotal loss of subcutaneous fatty tissue, whereas the thickness of the dermis remained almost unchanged. These findings should lead to further investigation of the pathophysiological mechanism involved in subcutaneous atrophy in circumscribed scleroderma.